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616915dd | 1 | /* |
11db3170 | 2 | ** Splint - annotation-assisted static program checker |
77d37419 | 3 | ** Copyright (C) 1994-2002 University of Virginia, |
616915dd | 4 | ** Massachusetts Institute of Technology |
5 | ** | |
6 | ** This program is free software; you can redistribute it and/or modify it | |
7 | ** under the terms of the GNU General Public License as published by the | |
8 | ** Free Software Foundation; either version 2 of the License, or (at your | |
9 | ** option) any later version. | |
10 | ** | |
11 | ** This program is distributed in the hope that it will be useful, but | |
12 | ** WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | ** General Public License for more details. | |
15 | ** | |
16 | ** The GNU General Public License is available from http://www.gnu.org/ or | |
17 | ** the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, | |
18 | ** MA 02111-1307, USA. | |
19 | ** | |
155af98d | 20 | ** For information on splint: info@splint.org |
21 | ** To report a bug: splint-bug@splint.org | |
11db3170 | 22 | ** For more information: http://www.splint.org |
616915dd | 23 | */ |
24 | /* | |
25 | ** usymtab | |
26 | ** | |
27 | ** Lexically scoped symbol table. | |
28 | ** | |
29 | ** Unlike a normal symbol table, this table splits to reflect branches. | |
30 | ** | |
31 | ** This is necessary since symbol table entries also reflect | |
32 | ** some state information, like initialization, that may be | |
33 | ** different on different branches. | |
34 | ** | |
35 | ** For each control structure we split: | |
36 | ** | |
37 | ** { } - a normal scope (no control) US_NORMAL | |
38 | ** | |
39 | ** if <pred> { } - US_TBRANCH true branch | |
40 | ** while <pred> { } US_FBRANCH else branch | |
41 | ** | |
42 | ** switch <pred> { } - US_SWITCH | |
43 | ** | |
44 | ** case x: - case scope US_CBRANCH | |
45 | ** Should be kept in a separate table, because of | |
46 | ** weird C syntax. | |
47 | */ | |
48 | ||
1b8ae690 | 49 | # include "splintMacros.nf" |
616915dd | 50 | # include "basic.h" |
51 | # include "structNames.h" | |
52 | # include "exprChecks.h" | |
28bf4b0b | 53 | # include "transferChecks.h" |
616915dd | 54 | |
3e3ec469 | 55 | /* Needed to install macros when loading libraries */ |
56 | ||
57 | # include "cpplib.h" | |
58 | # include "cpperror.h" | |
59 | # include "cpphash.h" | |
60 | ||
616915dd | 61 | /* |
62 | ** Keep track of type definitions inside a function. | |
63 | */ | |
64 | ||
65 | static uentryList functypes = uentryList_undefined; | |
66 | ||
67 | static bool dbgfree = FALSE; | |
68 | static bool dbgload = TRUE; | |
69 | ||
28bf4b0b | 70 | /*@access ekind@*/ |
616915dd | 71 | |
72 | /* | |
73 | ** Hack to prevent shadow errors from appearing when function parameters | |
74 | ** are entered into a new scope. | |
75 | */ | |
76 | ||
77 | static bool noshadowerror = FALSE; | |
78 | ||
79 | /* | |
80 | ** Constraint: static variables can live in 1 or > 2. | |
81 | ** | |
82 | ** except for tags. All tags must be at the global level. | |
83 | ** Static tags are handled in a kludgey way. | |
84 | */ | |
85 | ||
86 | /* | |
87 | ** utab is the universal symbol table | |
88 | ** globtab is the global environment of utab | |
89 | ** oldtab is needed for conversions in dumping (after sorting the table) | |
90 | ** | |
91 | ** there can be only one usymtab! | |
92 | */ | |
93 | ||
94 | static /*@checkedstrict@*/ /*@owned@*/ /*@notnull@*/ usymtab utab; | |
95 | ||
96 | /* Reachable environments from from utab */ | |
97 | static /*@checkedstrict@*/ /*@notnull@*/ /*@dependent@*/ usymtab globtab; | |
98 | static /*@checkedstrict@*/ /*@dependent@*/ usymtab filetab; | |
99 | ||
100 | /* Used for sorting for dumpage. */ | |
101 | static /*@checkedstrict@*/ /*@owned@*/ usymtab oldtab; | |
102 | ||
103 | static int usymtab_lexicalLevel (void) /*@globals utab@*/ ; | |
28bf4b0b | 104 | static bool usymtab_isAltDefinitelyNull (sRef p_s) /*@globals utab@*/ ; |
616915dd | 105 | static void refTable_free (/*@only@*/ /*@null@*/ refTable p_x, int p_nentries); |
106 | static ctype usymtab_suFieldsType (uentryList p_f, bool p_isStruct) /*@globals globtab@*/ ; | |
107 | ||
28bf4b0b | 108 | extern int usymtab_getCurrentDepth (void) /*@globals utab@*/ |
109 | { | |
110 | return utab->lexlevel; | |
111 | } | |
112 | ||
616915dd | 113 | static void |
114 | usymtab_freeLevel (/*@notnull@*/ /*@only@*/ usymtab p_u) | |
115 | /*@globals globtab, utab, filetab@*/ /*@modifies p_u@*/ ; | |
116 | ||
28bf4b0b | 117 | static bool usymtab_isDefinitelyNullAux (sRef p_s) /*@globals utab@*/ ; |
616915dd | 118 | static /*@only@*/ cstring usymtab_unparseStackTab (usymtab p_t); |
119 | static /*@exposed@*/ /*@dependent@*/ uentry | |
120 | usymtab_getRefTab (/*@notnull@*/ usymtab p_u, int p_level, usymId p_index); | |
8250fa4a | 121 | |
3e3ec469 | 122 | # ifdef S_SPLINT_S |
8250fa4a | 123 | /* These are not used anymore... */ |
616915dd | 124 | static /*@unused@*/ /*@only@*/ cstring |
125 | usymtab_unparseLocalAux (/*@notnull@*/ usymtab p_s); | |
126 | static /*@unused@*/ /*@only@*/ cstring | |
127 | usymtab_unparseLocalList (/*@notnull@*/ usymtab p_s); | |
8250fa4a | 128 | # endif |
129 | ||
616915dd | 130 | static /*@only@*/ cstring usymtab_typeName (/*@notnull@*/ usymtab p_t); |
131 | static void usymtab_handleParams (void) | |
132 | /*@globals utab, globtab, filetab@*/ | |
133 | /*@modifies utab@*/ ; | |
134 | ||
135 | static /*@exposed@*/ /*@dependent@*/ uentry | |
136 | usymtab_addRefEntry (/*@notnull@*/ usymtab p_s, cstring p_k); | |
137 | static /*@exposed@*/ /*@dependent@*/ usymtab | |
138 | usymtab_dropEnv (/*@notnull@*/ usymtab p_s); | |
139 | static /*@exposed@*/ /*@dependent@*/ uentry | |
140 | usymtab_getRefNoisy (/*@notnull@*/ usymtab p_s, int p_level, usymId p_index); | |
141 | ||
28bf4b0b | 142 | static /*@exposed@*/ /*@dependent@*/ uentry |
143 | usymtab_lookupQuietAux (usymtab p_s, cstring p_k, bool p_noalt); | |
144 | ||
616915dd | 145 | static /*@exposed@*/ /*@dependent@*/ uentry |
146 | usymtab_lookupQuiet (usymtab p_s, cstring p_k); | |
28bf4b0b | 147 | |
148 | static /*@exposed@*/ /*@dependent@*/ uentry | |
149 | usymtab_lookupQuietNoAlt (usymtab p_s, cstring p_k); | |
150 | ||
80489f0a | 151 | static void usymtab_printAllAux (usymtab p_s) /*@modifies g_warningstream@*/ ; |
616915dd | 152 | static int usymtab_getIndex (/*@notnull@*/ usymtab p_s, cstring p_k); |
153 | static /*@exposed@*/ uentry usymtab_fetchIndex (/*@notnull@*/ usymtab p_s, int p_i); | |
154 | static /*@exposed@*/ uentry | |
155 | usymtab_lookupAux (usymtab p_s, cstring p_k); | |
156 | static /*@exposed@*/ /*@dependent@*/ /*@notnull@*/ usymtab | |
157 | usymtab_getFileTab (void) /*@globals filetab@*/ ; | |
158 | static int refTable_lookup (/*@notnull@*/ usymtab p_ut, int p_level, int p_index); | |
159 | static bool usymtab_mustBreak (usymtab p_s); | |
160 | static bool usymtab_mustEscape (usymtab p_s); | |
161 | ||
162 | static void recordFunctionType (uentry ue) | |
163 | { | |
7ebcc5bb | 164 | llassert (uentry_isDatatype (ue) || uentry_isAnyTag (ue) |
616915dd | 165 | || uentry_isEnumConstant (ue)); |
7ebcc5bb | 166 | DPRINTF (("Function type: %s", uentry_unparseFull (ue))); |
616915dd | 167 | /*@-temptrans@*/ |
168 | functypes = uentryList_add (functypes, ue); | |
169 | /*@=temptrans@*/ | |
170 | } | |
171 | ||
172 | static void clearFunctionTypes (void) | |
173 | /*@modifies globtab@*/ | |
174 | { | |
175 | uentryList_elements (functypes, el) | |
176 | { | |
177 | if (cstring_isDefined (uentry_rawName (el))) | |
178 | { | |
28bf4b0b | 179 | if (cstringTable_isDefined (globtab->htable)) |
616915dd | 180 | { |
28bf4b0b | 181 | cstringTable_remove (globtab->htable, uentry_rawName (el)); |
616915dd | 182 | } |
183 | ||
184 | uentry_setName (el, cstring_undefined); | |
185 | } | |
186 | ||
187 | /*@access uentry@*/ | |
188 | llassert (uentry_isValid (el)); | |
189 | el->sref = sRef_undefined; | |
190 | /*@noaccess uentry@*/ | |
191 | } end_uentryList_elements ; | |
192 | ||
193 | uentryList_clear (functypes); | |
194 | } | |
195 | ||
0e41eb0e | 196 | static /*@falsewhennull@*/ bool usymtab_isBranch (usymtab u) |
616915dd | 197 | { |
198 | return (usymtab_isDefined (u) && | |
199 | (u->kind == US_TBRANCH || u->kind == US_FBRANCH | |
200 | || u->kind == US_CBRANCH || u->kind == US_SWITCH)); | |
201 | } | |
202 | ||
203 | static bool usymtab_mustBreak (usymtab s) | |
204 | { | |
205 | llassert (s != GLOBAL_ENV); | |
206 | return (s->mustBreak); | |
207 | } | |
208 | ||
209 | static bool usymtab_mustEscape (usymtab s) | |
210 | { | |
211 | llassert (s != GLOBAL_ENV); | |
212 | return (exitkind_mustEscape (s->exitCode)); | |
213 | } | |
214 | ||
215 | void usymtab_setMustBreak () | |
216 | /*@modifies utab@*/ | |
217 | { | |
218 | llassert (utab != GLOBAL_ENV); | |
219 | utab->mustBreak = TRUE; | |
220 | } | |
221 | ||
222 | void usymtab_setExitCode (exitkind ex) | |
223 | /*@modifies utab@*/ | |
224 | { | |
225 | llassert (utab != GLOBAL_ENV); | |
226 | ||
227 | utab->exitCode = ex; | |
228 | ||
229 | if (exitkind_mustEscape (ex)) | |
230 | { | |
231 | utab->mustBreak = TRUE; | |
232 | } | |
233 | } | |
234 | ||
28bf4b0b | 235 | bool usymtab_isAltDefinitelyNullDeep (sRef s) |
616915dd | 236 | { |
28bf4b0b | 237 | return (sRef_deepPred (usymtab_isAltDefinitelyNull, s)); |
616915dd | 238 | } |
239 | ||
28bf4b0b | 240 | static bool usymtab_isAltDefinitelyNull (sRef s) |
616915dd | 241 | /*@globals utab@*/ |
242 | { | |
243 | guardSet t; | |
244 | bool res; | |
245 | ||
246 | t = utab->guards; | |
247 | ||
248 | llassert (utab->env != NULL); | |
249 | ||
250 | /*@-mods@*/ /* These modifications are cancelled. */ | |
251 | utab->guards = utab->env->guards; | |
252 | utab->env->guards = t; | |
253 | /*@=mods@*/ | |
254 | ||
255 | llassert (usymtab_isDefined (utab)); | |
28bf4b0b | 256 | res = usymtab_isDefinitelyNull (s); |
616915dd | 257 | |
258 | /* | |
259 | ** This reports a spurious error. It is okay, because of | |
260 | ** the nesting relationship of usymtab environments. | |
261 | */ | |
262 | ||
263 | /*@-mods@*/ /* Cancelling modifications. */ | |
264 | /*@i1@*/ utab->env->guards = utab->guards; | |
265 | /*@i1@*/ utab->guards = t; | |
266 | /*@=mods@*/ | |
267 | ||
268 | return res; | |
269 | } | |
270 | ||
271 | static /*@notnull@*/ /*@special@*/ usymtab | |
272 | usymtab_create (uskind kind, /*@keep@*/ usymtab env, bool nextlevel) | |
273 | /*@defines result@*/ | |
274 | /*@post:isnull result->htable, result->guards, result->aliases@*/ | |
275 | { | |
276 | usymtab t = (usymtab) dmalloc (sizeof (*t)); | |
277 | ||
278 | t->nentries = 0; | |
279 | t->nspace = CBASESIZE; | |
280 | t->entries = (uentry *) dmalloc (sizeof (*t->entries) * CBASESIZE); | |
28bf4b0b | 281 | |
282 | /* We only use a reftable for branch-level symbol tables. | |
283 | */ | |
284 | ||
616915dd | 285 | t->reftable = (nextlevel |
286 | ? NULL | |
287 | : (refentry *) dmalloc (sizeof (*t->reftable) * CBASESIZE)); | |
288 | ||
289 | t->kind = kind; | |
290 | t->lexlevel = (env == GLOBAL_ENV ? 0 : env->lexlevel) + (nextlevel ? 1 : 0); | |
28bf4b0b | 291 | |
616915dd | 292 | t->env = env; |
293 | t->htable = NULL; | |
294 | ||
295 | t->guards = guardSet_undefined; | |
296 | t->aliases = aliasTable_undefined; | |
297 | ||
28bf4b0b | 298 | t->mustBreak = FALSE; |
616915dd | 299 | t->exitCode = XK_NEVERESCAPE; |
28bf4b0b | 300 | |
616915dd | 301 | return t; |
302 | } | |
303 | ||
304 | /* | |
305 | ** constructors | |
306 | */ | |
307 | ||
308 | static /*@only@*/ /*@notnull@*/ usymtab | |
309 | usymtab_createRoot (void) /*@modifies nothing@*/ | |
310 | { | |
311 | usymtab u = (usymtab) dmalloc (sizeof (*u)); | |
312 | ||
313 | u->nentries = 0; | |
314 | u->nspace = CGLOBBASESIZE; | |
315 | u->entries = (uentry *) dmalloc (sizeof (*u->entries) * CGLOBBASESIZE); | |
316 | u->env = GLOBAL_ENV; | |
317 | u->lexlevel = 0; | |
28bf4b0b | 318 | u->htable = cstringTable_create (CGLOBHASHSIZE); |
616915dd | 319 | u->reftable = NULL; |
28bf4b0b | 320 | |
616915dd | 321 | u->guards = guardSet_new (); |
322 | u->aliases = aliasTable_new (); | |
323 | ||
324 | u->mustBreak = FALSE; | |
325 | u->exitCode = XK_NEVERESCAPE; | |
326 | u->kind = US_NORMAL; | |
327 | ||
28bf4b0b | 328 | return (u); |
616915dd | 329 | } |
330 | ||
331 | void | |
332 | usymtab_initMod (void) | |
333 | /*@globals undef utab, undef oldtab, undef globtab, undef filetab @*/ | |
334 | /*@modifies utab, globtab, filetab, oldtab @*/ | |
335 | { | |
336 | utab = usymtab_createRoot (); | |
337 | globtab = utab; | |
338 | filetab = usymtab_undefined; | |
339 | oldtab = usymtab_undefined; | |
340 | } | |
341 | ||
28bf4b0b | 342 | |
343 | void | |
344 | usymtab_initGlobalMarker () /*@globals globtab@*/ | |
345 | { | |
346 | if (uentry_isValid (usymtab_lookupAux (globtab, GLOBAL_MARKER_NAME))) | |
347 | { | |
348 | ; /* Already entered from load table. */ | |
349 | } | |
350 | else | |
351 | { | |
352 | usymtab_addGlobalEntry (uentry_makeGlobalMarker ()); | |
353 | } | |
354 | } | |
355 | ||
616915dd | 356 | /* |
357 | ** utab should be empty? (requires?) | |
358 | ** | |
359 | ** Adds bool types to symbol table (these are built in for now) | |
360 | ** Only do this is there is no library! | |
361 | */ | |
362 | ||
363 | void | |
364 | usymtab_initBool () | |
365 | { | |
2cecdaff | 366 | DPRINTF (("Init bool!")); |
367 | ||
616915dd | 368 | if (context_getFlag (FLG_NOLIB)) |
369 | { | |
370 | ctype boolt = ctype_bool; | |
371 | /* evs 2000-07-24: bool is now treated as abstract (always) */ | |
372 | ||
373 | uentry boolentry = uentry_makeBoolDatatype (YES); | |
374 | usymtab_supGlobalEntry (boolentry); | |
375 | context_addBoolAccess (); | |
376 | ||
377 | /* | |
378 | ** We supply values 0 and 1 for the constants, so things like | |
379 | ** while (TRUE) can be interpreted correctly. | |
380 | */ | |
381 | ||
382 | usymtab_supGlobalEntry | |
5e211f69 | 383 | (uentry_makeConstantValue (context_getFalseName (), boolt, |
384 | fileloc_getBuiltin (), FALSE, | |
385 | multiVal_makeInt (0))); | |
3e3ec469 | 386 | |
616915dd | 387 | usymtab_supGlobalEntry |
5e211f69 | 388 | (uentry_makeConstantValue (context_getTrueName (), boolt, |
389 | fileloc_getBuiltin (), FALSE, | |
390 | multiVal_makeInt (1))); | |
616915dd | 391 | } |
392 | } | |
393 | ||
394 | /* | |
395 | ** mutators | |
396 | */ | |
397 | ||
398 | static void | |
399 | usymtab_grow (/*@notnull@*/ usymtab s) | |
400 | { | |
401 | int i; | |
402 | o_uentry *oldsyms = s->entries; | |
403 | ||
404 | s->nspace = CBASESIZE; | |
405 | s->entries = (uentry *) dmalloc (sizeof (*s->entries) | |
406 | * (s->nentries + s->nspace)); | |
407 | ||
408 | for (i = 0; i < s->nentries; i++) | |
409 | { | |
410 | s->entries[i] = oldsyms[i]; | |
411 | } | |
412 | ||
413 | sfree (oldsyms); | |
414 | ||
415 | if (s->reftable != NULL) | |
416 | { | |
417 | refTable oldRefs = s->reftable; | |
418 | ||
419 | s->reftable = (refentry *) dmalloc (sizeof (*s->reftable) | |
420 | * (s->nentries + CBASESIZE + 1)); | |
421 | ||
422 | for (i = 0; i < s->nentries; i++) | |
423 | { | |
424 | s->reftable[i] = oldRefs[i]; | |
425 | } | |
426 | ||
427 | /*@-compdestroy@*/ | |
428 | sfree (oldRefs); | |
429 | /*@=compdestroy@*/ | |
430 | } | |
431 | ||
432 | } | |
433 | ||
434 | static void | |
435 | usymtab_addEntryQuiet (/*@notnull@*/ usymtab s, /*@keep@*/ uentry e) | |
436 | { | |
437 | if (!(s->lexlevel > fileScope || !sRef_modInFunction ())) | |
438 | { | |
439 | if (uentry_isDatatype (e) | |
440 | || uentry_isFunction (e) | |
441 | || uentry_isAnyTag (e) | |
442 | || uentry_isEnumConstant (e) | |
443 | || context_inMacro ()) | |
444 | { | |
445 | /* | |
446 | ** Not a bug. Code like, | |
447 | ** int f (void) { typedef int tint; ... } | |
448 | ** is legal. | |
449 | */ | |
450 | ||
451 | /* was nothing here! */ | |
452 | /*@i@*/ e->sref = sRef_saveCopy (e->sref); | |
453 | } | |
454 | else | |
455 | { | |
456 | llparseerror | |
457 | (cstring_makeLiteral ("Declaration outside function scope")); | |
458 | ||
459 | llcontbug (message ("usymtab_addEntryQuiet: inconsistent state " | |
460 | "(lexlevel = %d, modFunction = %s) adding: %q", | |
461 | s->lexlevel, bool_unparse (sRef_modInFunction ()), | |
462 | uentry_unparse (e))); | |
463 | sRef_setGlobalScope (); | |
464 | /* make sure the sRef is not bashed! */ | |
465 | /*@i@*/ e->sref = sRef_saveCopy (e->sref); | |
466 | } | |
467 | } | |
468 | ||
469 | if (s->nspace <= 0) | |
470 | { | |
471 | usymtab_grow (s); | |
472 | } | |
473 | ||
474 | s->nspace--; | |
475 | s->entries[s->nentries] = e; | |
476 | ||
477 | # ifdef DOANNOTS | |
478 | if (s == globtab || s == filetab) | |
479 | { | |
480 | if (!fileloc_isLib (g_currentloc)) | |
481 | { | |
482 | uentry_tallyAnnots (e, AN_UNKNOWN); | |
483 | } | |
484 | } | |
485 | # endif | |
486 | ||
28bf4b0b | 487 | if (cstringTable_isDefined (s->htable)) |
616915dd | 488 | { |
28bf4b0b | 489 | cstringTable_insert (s->htable, cstring_copy (uentry_rawName (e)), s->nentries); |
616915dd | 490 | } |
491 | ||
492 | s->nentries++; | |
493 | } | |
494 | ||
495 | static /*@observer@*/ uentry /*@alt void@*/ | |
496 | usymtab_addEntryBase (/*@notnull@*/ usymtab s, /*@only@*/ uentry e) | |
497 | { | |
498 | /* | |
499 | ** In theory, we shouldn't need this test because it this is | |
500 | ** only called when a library is being read, and it shouldn't | |
501 | ** ever have a duplicate entry. In practice, its safer to | |
502 | ** leave it in, though. | |
503 | */ | |
504 | ||
505 | uentry old; | |
506 | ||
507 | if (uentry_isValid (old = usymtab_lookupQuiet (s, uentry_rawName (e)))) | |
508 | { | |
509 | DPRINTF (("Duplicate entry: %s", uentry_unparse (e))); | |
510 | uentry_free (e); /* duplicate */ | |
511 | return old; | |
512 | } | |
513 | else | |
514 | { | |
515 | int thisentry = s->nentries; | |
516 | ||
517 | if (uentry_isVar (e)) | |
518 | { | |
519 | uentry_setSref (e, sRef_makeCvar (globScope, thisentry, | |
6970c11b | 520 | uentry_getType (e), |
521 | stateInfo_makeLoc (uentry_whereLast (e)))); | |
616915dd | 522 | } |
523 | ||
524 | usymtab_addEntryQuiet (s, e); | |
525 | return e; | |
526 | } | |
527 | } | |
528 | ||
28bf4b0b | 529 | |
530 | static /*@observer@*/ uentry /*@alt void@*/ | |
531 | usymtab_addEntryAlways (/*@notnull@*/ usymtab s, /*@only@*/ uentry e) | |
532 | { | |
533 | /* | |
534 | ** In theory, we shouldn't need this test because it this is | |
535 | ** only called when a library is being read, and it shouldn't | |
536 | ** ever have a duplicate entry. In practice, its safer to | |
537 | ** leave it in, though. | |
538 | */ | |
539 | ||
540 | uentry old; | |
541 | int thisentry = s->nentries; | |
542 | ||
543 | if (uentry_isValid (old = usymtab_lookupQuiet (s, uentry_rawName (e)))) | |
544 | { | |
545 | llcontbug | |
546 | (message ("Duplicate entry in load library: %s. " | |
547 | "Old entry: %q. New entry: %q", | |
548 | uentry_rawName (e), | |
549 | uentry_unparseFull (old), | |
550 | uentry_unparseFull (e))); | |
551 | ||
552 | uentry_setName (e, message ("__x_%s", uentry_rawName (e))); | |
553 | /* This shouldn't happen...unless the library is bad! */ | |
554 | } | |
555 | ||
556 | ||
557 | if (uentry_isVar (e) && !uentry_isGlobalMarker (e)) | |
558 | { | |
559 | uentry_setSref (e, sRef_makeCvar (globScope, thisentry, | |
6970c11b | 560 | uentry_getType (e), |
561 | stateInfo_makeLoc (uentry_whereLast (e)))); | |
28bf4b0b | 562 | } |
563 | ||
564 | usymtab_addEntryQuiet (s, e); | |
565 | return e; | |
566 | } | |
567 | ||
616915dd | 568 | static usymId |
569 | usymtab_addEntryAux (/*@notnull@*/ usymtab st, /*@keep@*/ uentry e, bool isSref) | |
570 | /*@globals globtab@*/ | |
571 | /*@modifies st, e@*/ | |
572 | { | |
573 | usymId thisentry = st->nentries; | |
574 | ||
575 | llassert (!uentry_isElipsisMarker (e)); | |
576 | ||
577 | /* | |
578 | ** not true for tags | |
579 | ** llassert (usymtab_lookupSafe (uentry_rawName (e)) == uentry_undefined); | |
580 | **/ | |
581 | ||
582 | llassertprint (uentry_isAnyTag (e) ? st == globtab : TRUE, | |
583 | ("non-global tag: %s / %d", uentry_unparseFull (e), st->lexlevel)); | |
584 | ||
585 | if (st->lexlevel == fileScope | |
586 | && (!(uentry_isStatic (e)) || uentry_isAnyTag (e))) | |
587 | { | |
588 | st = globtab; | |
589 | } | |
590 | ||
591 | if (isSref) | |
592 | { | |
593 | ctype ct = uentry_getType (e); | |
594 | ||
595 | if (uentry_isFunction (e) && ctype_isFunction (ct)) | |
596 | { | |
28bf4b0b | 597 | ct = ctype_getReturnType (ct); |
616915dd | 598 | } |
599 | ||
600 | if (uentry_isStatic (e)) | |
601 | { | |
6970c11b | 602 | sRef sr = sRef_makeCvar (st->lexlevel, thisentry, ct, stateInfo_makeLoc (uentry_whereLast (e))); |
616915dd | 603 | |
604 | if (sRef_isStack (sr) || sRef_isLocalState (sr)) | |
605 | { | |
606 | sRef_setAliasKind (sr, AK_STATIC, uentry_whereLast (e)); | |
607 | sRef_setDefined (sr, uentry_whereLast (e)); | |
608 | } | |
609 | ||
610 | uentry_setSref (e, sr); | |
611 | } | |
612 | else | |
613 | { | |
6970c11b | 614 | uentry_setSref (e, sRef_makeCvar (st->lexlevel, thisentry, ct, stateInfo_makeLoc (uentry_whereLast (e)))); |
616915dd | 615 | } |
6970c11b | 616 | } |
616915dd | 617 | |
618 | if (uentry_isDatatype (e)) | |
619 | { | |
620 | ||
621 | uentry_setDatatype (e, thisentry); | |
622 | } | |
623 | ||
624 | if (uentry_isFunction (e)) | |
625 | { | |
626 | ctype ct = uentry_getType (e); | |
627 | ||
628 | if (ctype_isFunction (ct) | |
629 | && uentryList_isMissingParams (ctype_argsFunction (ct))) | |
630 | { | |
631 | if (uentry_isDeclared (e)) | |
632 | { | |
633 | voptgenerror | |
634 | (FLG_NOPARAMS, | |
635 | message ("Function %q declared without parameter list", | |
636 | uentry_getName (e)), | |
637 | uentry_whereDeclared (e)); | |
638 | } | |
639 | else | |
640 | { | |
641 | voptgenerror | |
642 | (FLG_NOPARAMS, | |
643 | message ("Function %q specified without parameter list", | |
644 | uentry_getName (e)), | |
645 | uentry_whereSpecified (e)); | |
646 | } | |
647 | } | |
648 | } | |
649 | ||
650 | if (st == globtab && !uentry_isSpecified (e)) | |
651 | { | |
652 | exprChecks_checkExport (e); | |
653 | } | |
654 | ||
616915dd | 655 | uentry_checkName (e); |
656 | ||
657 | usymtab_addEntryQuiet (st, e); | |
28bf4b0b | 658 | DPRINTF (("Adding entry: [%p] %s", e, uentry_unparseFull (e))); |
616915dd | 659 | return (thisentry); |
660 | } | |
661 | ||
662 | usymId | |
663 | usymtab_addEntry (uentry e) | |
664 | /*@globals utab, globtab@*/ | |
665 | /*@modifies utab, e@*/ | |
28bf4b0b | 666 | { |
616915dd | 667 | llassertprint (!usymtab_exists (uentry_rawName (e)), |
668 | ("Entry already exists: %s", uentry_unparse (e))); | |
669 | ||
670 | return usymtab_addEntryAux (utab, e, FALSE); | |
671 | } | |
672 | ||
673 | void | |
674 | usymtab_addGlobalEntry (uentry e) | |
675 | /*@modifies globtab, e@*/ | |
676 | { | |
677 | DPRINTF (("Add global: %s / %s", uentry_unparse (e), bool_unparse (uentry_isForward (e)))); | |
678 | ||
679 | (void) usymtab_addEntryAux (globtab, e, FALSE); | |
680 | } | |
681 | ||
682 | /* | |
683 | ** supercede and replace entry use elements of entries array, and | |
684 | ** assign an element to a new value, and then free the old value. | |
685 | ** Need -deparrays to avoid errors for this. | |
686 | */ | |
687 | ||
688 | /*@-deparrays@*/ | |
689 | ||
690 | static usymId | |
691 | usymtab_supEntryAux (/*@notnull@*/ usymtab st, | |
692 | /*@only@*/ uentry e, bool isSref) | |
693 | /*@globals globtab, filetab@*/ | |
694 | /*@modifies st, globtab, e@*/ | |
695 | { | |
696 | cstring ename = uentry_rawName (e); | |
697 | bool staticEntry = FALSE; | |
698 | int eindex; | |
699 | ||
28bf4b0b | 700 | DPRINTF (("Sup entry aux: %s", uentry_unparseFull (e))); |
701 | ||
616915dd | 702 | /* static tags in global scope */ |
703 | if (st->lexlevel == fileScope | |
704 | && (!(uentry_isStatic (e)) || uentry_isAnyTag (e))) | |
705 | { | |
706 | eindex = usymtab_getIndex (st, ename); | |
707 | ||
708 | if (eindex != NOT_FOUND) | |
709 | { | |
710 | uentry ce = st->entries[eindex]; | |
711 | ||
712 | if (optgenerror | |
713 | (FLG_SHADOW, | |
714 | message ("%s %q shadows static declaration", | |
715 | ekind_capName (uentry_getKind (e)), | |
716 | uentry_getName (e)), | |
717 | uentry_whereDeclared (e))) | |
718 | { | |
719 | uentry_showWhereLast (ce); | |
720 | } | |
721 | ||
722 | if (eindex == st->nentries - 1) | |
723 | { | |
724 | ; | |
725 | } | |
726 | else | |
727 | { | |
728 | st->entries[eindex] = st->entries[st->nentries - 1]; | |
729 | } | |
730 | ||
28bf4b0b | 731 | if (cstringTable_isDefined (st->htable)) |
616915dd | 732 | { |
28bf4b0b | 733 | cstringTable_replaceKey (st->htable, uentry_rawName (ce), |
734 | cstring_copy (uentry_rawName (e))); | |
616915dd | 735 | } |
736 | ||
737 | uentry_free (ce); | |
738 | st->nentries--; | |
739 | } | |
740 | ||
741 | st = globtab; | |
742 | } | |
743 | ||
744 | if (uentry_isStatic (e)) { | |
745 | if (uentry_isFunction (e)) { | |
28bf4b0b | 746 | /* |
747 | ** Static function declarations are at the file level, | |
748 | ** even if they are in a deeper scope. | |
749 | */ | |
750 | ||
616915dd | 751 | st = usymtab_getFileTab (); |
752 | staticEntry = TRUE; | |
753 | } else { | |
754 | if (!uentry_isAnyTag (e) && st == globtab) | |
755 | { | |
756 | st = usymtab_getFileTab (); | |
757 | staticEntry = TRUE; | |
758 | DPRINTF (("Static entry!")); | |
759 | } | |
760 | } | |
761 | } | |
762 | ||
616915dd | 763 | eindex = usymtab_getIndex (st, ename); |
764 | ||
765 | if (eindex != NOT_FOUND) | |
766 | { | |
767 | uentry ce = st->entries[eindex]; | |
28bf4b0b | 768 | |
616915dd | 769 | DPRINTF (("Found entry: %s", uentry_unparse (ce))); |
770 | ||
771 | if (uentry_isPriv (ce) | |
772 | /* || (fileloc_isImport (uentry_whereSpecified (ce))) */ | |
773 | || (uentry_isStatic (ce) | |
774 | && uentry_isAnyTag (ce) | |
775 | && (uentry_isDeclared (ce) | |
776 | && !fileloc_sameFile (uentry_whereDefined (ce), | |
777 | uentry_whereDefined (e))))) | |
778 | { | |
779 | /* | |
780 | ** overload entry | |
781 | ** if overloading import should do some checks! | |
782 | */ | |
783 | ||
784 | llassert ((st->lexlevel > fileScope || !sRef_modInFunction ())); | |
785 | ||
28bf4b0b | 786 | DPRINTF (("Overloading!")); |
787 | ||
616915dd | 788 | st->entries[eindex] = e; |
789 | ||
790 | if (uentry_isDatatype (e)) | |
791 | { | |
792 | uentry_setDatatype (e, eindex); | |
793 | } | |
794 | ||
795 | if (st == globtab && !uentry_isSpecified (e)) | |
796 | { | |
797 | exprChecks_checkExport (e); | |
798 | } | |
799 | ||
28bf4b0b | 800 | if (cstringTable_isDefined (st->htable)) |
616915dd | 801 | { |
28bf4b0b | 802 | cstringTable_replaceKey (st->htable, uentry_rawName (ce), |
803 | cstring_copy (uentry_rawName (e))); | |
616915dd | 804 | } |
805 | ||
806 | uentry_free (ce); | |
807 | ce = e; | |
808 | } | |
809 | else if (uentry_isSpecified (ce)) | |
810 | { | |
811 | if (uentry_isSpecified (e)) | |
812 | { | |
28bf4b0b | 813 | DPRINTF (("Here we are: %s", uentry_unparseFull (e))); |
814 | ||
616915dd | 815 | if (fileloc_isImport (uentry_whereSpecified (ce))) |
28bf4b0b | 816 | { |
817 | if (cstringTable_isDefined (st->htable)) | |
616915dd | 818 | { |
28bf4b0b | 819 | cstringTable_replaceKey (st->htable, |
820 | uentry_rawName (ce), | |
821 | cstring_copy (uentry_rawName (e))); | |
616915dd | 822 | } |
823 | ||
824 | uentry_free (ce); | |
825 | st->entries[eindex] = e; | |
826 | ce = e; | |
827 | ||
828 | if (uentry_isDatatype (e)) uentry_setDatatype (e, eindex); | |
829 | } | |
830 | else | |
831 | { | |
832 | if (fileloc_isImport (uentry_whereSpecified (e))) | |
833 | { | |
834 | uentry_free (e); | |
835 | } | |
836 | else | |
837 | { | |
28bf4b0b | 838 | /* Respecification errors already reported */ |
839 | DPRINTF (("Respecification: %s / %s", | |
840 | fileloc_unparse (uentry_whereSpecified (e)), | |
841 | bool_unparse (fileloc_isSpec (uentry_whereSpecified (e))))); | |
842 | ||
616915dd | 843 | if (uentry_isDatatype (e)) |
844 | { | |
845 | uentry_setDatatype (e, eindex); | |
846 | } | |
847 | ||
28bf4b0b | 848 | if (cstringTable_isDefined (st->htable)) |
616915dd | 849 | { |
28bf4b0b | 850 | cstringTable_replaceKey (st->htable, |
851 | uentry_rawName (ce), | |
852 | cstring_copy (uentry_rawName (e))); | |
616915dd | 853 | } |
854 | ||
855 | llassert ((st->lexlevel > fileScope || !sRef_modInFunction ())); | |
856 | uentry_free (ce); | |
857 | st->entries[eindex] = e; | |
858 | ce = e; | |
859 | } | |
860 | } | |
861 | } | |
862 | else /* e not specified */ | |
863 | { | |
28bf4b0b | 864 | DPRINTF (("Merging...")); |
865 | ||
616915dd | 866 | if (uentry_isDeclared (ce)) |
867 | { | |
1d239d69 | 868 | /* evans 2001-08-26 |
869 | No - this can happen for internal typedefs | |
870 | llassert ((st->lexlevel > fileScope || !sRef_modInFunction ())); | |
871 | */ | |
872 | ||
28bf4b0b | 873 | DPRINTF (("Merge defn")); |
616915dd | 874 | uentry_mergeDefinition (ce, e); |
875 | } | |
876 | else | |
877 | { | |
1d239d69 | 878 | /* evans 2001-08-26 |
879 | No - this can happen for internal typedefs | |
880 | llassert ((st->lexlevel > fileScope || !sRef_modInFunction ())); | |
881 | */ | |
882 | ||
28bf4b0b | 883 | DPRINTF (("Merge entries...")); |
616915dd | 884 | uentry_mergeEntries (ce, e); |
28bf4b0b | 885 | DPRINTF (("After: %s", uentry_unparseFull (ce))); |
616915dd | 886 | } |
887 | } | |
888 | } | |
889 | else /* ce not specified */ | |
890 | { | |
891 | if (!(st->lexlevel > fileScope || !sRef_modInFunction ())) | |
892 | { | |
893 | if (uentry_isDatatype (e) || uentry_isAnyTag (e) | |
140c27a8 | 894 | || uentry_isEnumConstant (e) |
895 | || uentry_isStatic (e)) /* bug fix from Brian St. Pierre */ | |
616915dd | 896 | { |
897 | ; /* | |
898 | ** Not a bug. Code like, | |
899 | ** int f (void) { typedef int tint; ... } | |
900 | ** is legal. | |
901 | */ | |
902 | } | |
903 | else | |
904 | { | |
905 | llcontbug (message ("usymtab_supEntryAux: inconsistent state " | |
906 | "(lexlevel = %d, modFunction = %s) adding: %q", | |
907 | st->lexlevel, bool_unparse (sRef_modInFunction ()), | |
908 | uentry_unparse (e))); | |
909 | ||
910 | if (sRef_modInFunction ()) | |
911 | { | |
912 | /* make sure the sRef is not bashed! */ | |
913 | /*@i@*/ e->sref = sRef_saveCopy (e->sref); | |
914 | } | |
915 | } | |
916 | } | |
917 | ||
28bf4b0b | 918 | DPRINTF (("Merge..")); |
616915dd | 919 | uentry_mergeDefinition (ce, e); |
920 | } | |
921 | ||
922 | if (isSref) | |
923 | { | |
924 | ctype ct = uentry_getType (ce); | |
925 | ||
926 | if (uentry_isFunction (ce) && ctype_isFunction (ct)) | |
927 | { | |
28bf4b0b | 928 | ct = ctype_getReturnType (ct); |
616915dd | 929 | } |
930 | ||
6970c11b | 931 | uentry_setSref (ce, sRef_makeCvar (st->lexlevel, eindex, ct, stateInfo_makeLoc (uentry_whereLast (ce)))); |
932 | } | |
616915dd | 933 | } |
934 | else /* no previous entry */ | |
935 | { | |
936 | uentry outer; | |
937 | ||
938 | if (st->lexlevel == globScope | |
939 | && !uentry_isStatic (e) | |
940 | && !uentry_isExtern (e) | |
941 | && usymtab_isDefined (filetab)) | |
942 | { | |
943 | /* | |
944 | ** check if there is a static entry: (i.e., | |
945 | ** | |
946 | ** static int f (); | |
947 | ** ... | |
948 | ** int f (); | |
949 | */ | |
950 | ||
951 | eindex = usymtab_getIndex (filetab, ename); | |
952 | ||
953 | if (eindex != NOT_FOUND) | |
954 | { | |
955 | uentry ce = filetab->entries[eindex]; | |
956 | ||
957 | uentry_setStatic (e); | |
958 | uentry_mergeDefinition (ce, e); | |
959 | staticEntry = TRUE; | |
960 | goto exitPoint; | |
961 | } | |
962 | } | |
963 | ||
964 | outer = usymtab_lookupQuiet (st->env, ename); | |
965 | ||
7ebcc5bb | 966 | DPRINTF (("New : [%p] %s", e, uentry_unparseFull (e))); |
967 | DPRINTF (("Outer: [%p] %s", outer, uentry_unparseFull (outer))); | |
968 | ||
616915dd | 969 | /* |
970 | ** no previous definition, add the new one | |
971 | */ | |
972 | ||
973 | if (!noshadowerror | |
974 | && uentry_isValid (outer) | |
975 | && !(uentry_isYield (e) || uentry_isYield (outer)) | |
976 | && fileloc_isDefined (uentry_whereLast (e)) | |
ccf0a4a8 | 977 | && !fileloc_isXHFile (uentry_whereLast (e)) |
978 | && fileloc_isDefined (uentry_whereLast (outer)) | |
979 | && !fileloc_isXHFile (uentry_whereLast (outer))) | |
616915dd | 980 | { |
981 | if (!uentry_sameKind (outer, e)) | |
982 | { | |
983 | ; /* no error */ | |
984 | } | |
985 | else | |
986 | { | |
987 | if (ctype_isUnknown (uentry_getType (outer)) | |
988 | || uentry_isForward (outer)) | |
989 | { | |
990 | ; | |
991 | } | |
992 | else | |
993 | { | |
994 | if (optgenerror | |
995 | (FLG_SHADOW, | |
996 | message ("%s %q shadows outer declaration", | |
997 | ekind_capName (uentry_getKind (e)), | |
998 | uentry_getName (e)), | |
999 | uentry_whereLast (e))) | |
1000 | { | |
1001 | uentry_showWhereLast (outer); | |
1002 | } | |
1003 | } | |
1004 | } | |
1005 | } | |
1006 | ||
1007 | if (st == globtab && context_getFlag (FLG_NEWDECL)) | |
1008 | { | |
1009 | voptgenerror | |
1010 | (FLG_NEWDECL, | |
1011 | message ("New declaration: %q", uentry_getName (e)), | |
1012 | uentry_whereLast (e)); | |
1013 | } | |
1014 | ||
1015 | eindex = usymtab_addEntryAux (st, e, isSref); | |
1016 | } | |
1017 | ||
1018 | exitPoint: | |
1019 | return (staticEntry ? USYMIDINVALID : eindex); | |
1020 | } | |
1021 | ||
1022 | # ifndef NOLCL | |
1023 | static void | |
1024 | usymtab_replaceEntryAux (/*@notnull@*/ usymtab st, /*@only@*/ uentry e) | |
1025 | /*@globals globtab@*/ /*@modifies st, e@*/ | |
1026 | { | |
1027 | cstring ename = uentry_rawName (e); | |
1028 | int eindex; | |
1029 | ||
1030 | /* static tags in global scope */ | |
1031 | eindex = usymtab_getIndex (st, ename); | |
1032 | ||
1033 | if (eindex != NOT_FOUND) | |
1034 | { | |
1035 | uentry ce = st->entries[eindex]; | |
1036 | ||
28bf4b0b | 1037 | if (cstringTable_isDefined (st->htable)) |
616915dd | 1038 | { |
28bf4b0b | 1039 | cstringTable_replaceKey (st->htable, uentry_rawName (ce), |
1040 | cstring_copy (uentry_rawName (e))); | |
616915dd | 1041 | } |
1042 | ||
1043 | uentry_free (ce); | |
1044 | st->entries[eindex] = e; | |
1045 | } | |
1046 | else | |
1047 | { | |
1048 | eindex = usymtab_addEntryAux (st, e, FALSE); | |
1049 | } | |
1050 | } | |
1051 | # endif | |
1052 | ||
1053 | /*@=deparrays@*/ | |
1054 | ||
1055 | void usymtab_supEntry (uentry e) | |
1056 | /*@globals utab, filetab, globtab@*/ | |
1057 | /*@modifies utab, globtab, e@*/ | |
1058 | { | |
1059 | (void) usymtab_supEntryAux (utab, e, FALSE); | |
1060 | } | |
1061 | ||
1062 | /* | |
1063 | ** this should be lots more efficient! | |
1064 | */ | |
1065 | ||
1066 | static /*@exposed@*/ uentry | |
1067 | usymtab_supEntryReturnAux (/*@notnull@*/ usymtab tab, | |
1068 | /*@only@*/ uentry e, bool isref) | |
1069 | /*@globals globtab, filetab@*/ | |
1070 | /*@modifies tab, globtab, e@*/ | |
1071 | { | |
1072 | cstring rawName = cstring_copy (uentry_rawName (e)); | |
1073 | bool stat = (tab == globtab) && uentry_isStatic (e); | |
1074 | uentry ret; | |
1075 | ||
616915dd | 1076 | (void) usymtab_supEntryAux (tab, e, isref); |
1077 | ||
1078 | if (stat) | |
1079 | { | |
1080 | ret = usymtab_lookupAux (filetab, rawName); | |
1081 | } | |
1082 | else | |
1083 | { | |
1084 | ret = usymtab_lookupAux (tab, rawName); | |
1085 | ||
1086 | if (uentry_isInvalid (ret) && usymtab_isDefined (filetab)) | |
1087 | { | |
1088 | ret = usymtab_lookupAux (filetab, rawName); | |
1089 | } | |
1090 | } | |
1091 | ||
1092 | cstring_free (rawName); | |
1093 | return ret; | |
1094 | } | |
1095 | ||
1096 | /*@dependent@*/ /*@exposed@*/ uentry | |
1097 | usymtab_supEntryReturn (/*@only@*/ uentry e) | |
1098 | /*@globals utab, filetab, globtab@*/ | |
1099 | /*@modifies utab, globtab, e@*/ | |
1100 | { | |
1101 | return (usymtab_supEntryReturnAux (utab, e, FALSE)); | |
1102 | } | |
1103 | ||
1104 | /*@dependent@*/ /*@exposed@*/ uentry | |
1105 | usymtab_supEntrySrefReturn (/*@only@*/ uentry e) | |
1106 | /*@globals utab, globtab, filetab@*/ | |
1107 | /*@modifies utab, globtab, e@*/ | |
1108 | { | |
1109 | return (usymtab_supEntryReturnAux (utab, e, TRUE)); | |
1110 | } | |
1111 | ||
1112 | /*@dependent@*/ /*@exposed@*/ uentry | |
1113 | usymtab_supGlobalEntryReturn (uentry e) | |
1114 | /*@globals globtab, filetab@*/ | |
1115 | /*@modifies globtab, e@*/ | |
1116 | { | |
1117 | uentry ret; | |
1118 | ||
1119 | ret = usymtab_supEntryReturnAux (globtab, e, FALSE); | |
1120 | ||
7ebcc5bb | 1121 | /* |
1122 | ** We need to keep track of internal function declarations, so | |
1123 | ** we can remove them from the symbol table after exiting this | |
1124 | ** function. This is a bit bogus, of course. | |
1125 | */ | |
1126 | ||
616915dd | 1127 | if (sRef_modInFunction ()) |
1128 | { | |
1129 | recordFunctionType (ret); | |
1130 | } | |
1131 | ||
1132 | return (ret); | |
1133 | } | |
1134 | ||
1135 | ctype | |
1136 | usymtab_supTypeEntry (/*@only@*/ uentry e) | |
1137 | /*@globals globtab, filetab@*/ | |
1138 | /*@modifies globtab, e@*/ | |
1139 | { | |
1140 | usymId uid; | |
1141 | ctype ret; | |
1142 | ||
1143 | if (uentry_isAbstractDatatype (e)) | |
1144 | { | |
1145 | uid = usymtab_supAbstractTypeEntry (e, FALSE); | |
1146 | ret = ctype_createAbstract (uid); | |
1147 | } | |
1148 | else | |
1149 | { | |
1150 | uid = usymtab_supEntryAux (globtab, e, FALSE); | |
1151 | ret = ctype_createUser (uid); | |
1152 | } | |
1153 | ||
1154 | if (sRef_modInFunction ()) | |
1155 | { | |
1156 | recordFunctionType (globtab->entries[uid]); | |
1157 | } | |
1158 | ||
1159 | return ret; | |
1160 | } | |
1161 | ||
1162 | uentry | |
1163 | usymtab_supReturnTypeEntry (/*@only@*/ uentry e) | |
1164 | /*@globals globtab, filetab@*/ | |
1165 | /*@modifies globtab@*/ | |
1166 | { | |
1167 | usymId uid; | |
28bf4b0b | 1168 | |
1169 | DPRINTF (("Abstract? %s", uentry_unparseFull (e))); | |
1170 | ||
616915dd | 1171 | if (uentry_isAbstractDatatype (e)) |
1172 | { | |
1173 | uid = usymtab_supAbstractTypeEntry (e, FALSE); | |
1174 | } | |
28bf4b0b | 1175 | else if (uentry_isMaybeAbstract (e) && context_getFlag (FLG_IMPABSTRACT)) |
1176 | { | |
1177 | bool maybeabs = TRUE; | |
1178 | cstring sname = uentry_getName (e); | |
1179 | uentry ue = usymtab_lookupGlobSafe (sname); | |
1180 | cstring_free (sname); | |
1181 | ||
1182 | if (uentry_isValid (ue)) | |
1183 | { | |
1184 | DPRINTF (("Lookup: %s", uentry_unparseFull (ue))); | |
1185 | ||
1186 | if (uentry_isDatatype (ue)) | |
1187 | { | |
1188 | if (uentry_isMaybeAbstract (ue)) | |
1189 | { | |
1190 | ; | |
1191 | } | |
1192 | else | |
1193 | { | |
1194 | maybeabs = FALSE; | |
1195 | } | |
1196 | } | |
1197 | else | |
1198 | { | |
1199 | DPRINTF (("Not datatype!")); | |
1200 | } | |
1201 | } | |
1202 | ||
1203 | if (maybeabs) | |
1204 | { | |
1205 | uentry ux; | |
1206 | uid = usymtab_supAbstractTypeEntry (e, FALSE); | |
1207 | ux = usymtab_getTypeEntry (uid); | |
1208 | uentry_setAbstract (ux); | |
1209 | } | |
1210 | else | |
1211 | { | |
1212 | uid = usymtab_supEntryAux (globtab, e, FALSE); | |
1213 | e = usymtab_getTypeEntry (uid); | |
1214 | ||
1215 | if (uentry_isMaybeAbstract (e)) | |
1216 | { | |
1217 | uentry_setConcrete (e); | |
1218 | } | |
1219 | } | |
1220 | } | |
616915dd | 1221 | else |
1222 | { | |
1223 | uid = usymtab_supEntryAux (globtab, e, FALSE); | |
28bf4b0b | 1224 | e = usymtab_getTypeEntry (uid); |
1225 | ||
1226 | if (uentry_isMaybeAbstract (e)) | |
1227 | { | |
1228 | uentry_setConcrete (e); | |
1229 | } | |
616915dd | 1230 | } |
1231 | ||
1232 | if (sRef_modInFunction ()) | |
1233 | { | |
1234 | recordFunctionType (globtab->entries[uid]); | |
1235 | } | |
1236 | ||
1237 | return (globtab->entries[uid]); | |
1238 | } | |
1239 | ||
1240 | usymId | |
1241 | usymtab_supAbstractTypeEntry (/*@only@*/ uentry e, bool dodef) | |
1242 | /*@globals globtab, filetab@*/ | |
1243 | /*@modifies globtab, e@*/ | |
1244 | { | |
1245 | usymId uid; | |
28bf4b0b | 1246 | uentry ue; |
1247 | ||
616915dd | 1248 | uid = usymtab_supEntryAux (globtab, e, FALSE); |
28bf4b0b | 1249 | ue = usymtab_getTypeEntry (uid); |
616915dd | 1250 | |
1251 | if (dodef) | |
1252 | { | |
616915dd | 1253 | uentry_setDatatype (ue, uid); |
1254 | } | |
1255 | ||
28bf4b0b | 1256 | if (context_getFlag (FLG_ACCESSMODULE)) /* was accessfile */ |
616915dd | 1257 | { |
1258 | context_addFileAccessType (uid); | |
1259 | } | |
1260 | ||
1261 | if (sRef_modInFunction ()) | |
1262 | { | |
1263 | recordFunctionType (globtab->entries[uid]); | |
1264 | } | |
1265 | ||
1266 | return (uid); | |
1267 | } | |
1268 | ||
1269 | # ifndef NOLCL | |
1270 | usymId | |
1271 | usymtab_supExposedTypeEntry (/*@only@*/ uentry e, bool dodef) | |
1272 | /*@globals globtab, filetab@*/ | |
1273 | /*@modifies globtab, e@*/ | |
1274 | { | |
1275 | usymId uid; | |
1276 | ||
1277 | uid = usymtab_supEntryAux (globtab, e, FALSE); | |
1278 | ||
1279 | if (dodef) | |
1280 | { | |
1281 | uentry ue = usymtab_getTypeEntry (uid); | |
1282 | ||
1283 | uentry_setDatatype (ue, uid); | |
1284 | } | |
1285 | ||
1286 | if (sRef_modInFunction ()) | |
1287 | { | |
1288 | recordFunctionType (globtab->entries[uid]); | |
1289 | } | |
1290 | ||
1291 | return (uid); | |
1292 | } | |
1293 | # endif | |
1294 | ||
1295 | ctype | |
1296 | usymtab_supForwardTypeEntry (/*@only@*/ uentry e) | |
1297 | /*@globals globtab, filetab@*/ | |
1298 | /*@modifies globtab, e@*/ | |
1299 | { | |
1300 | usymId uid = usymtab_supEntryAux (globtab, e, FALSE); | |
1301 | uentry ue = usymtab_getTypeEntry (uid); | |
1302 | ||
1303 | uentry_setDatatype (ue, uid); | |
1304 | ||
1305 | if (sRef_modInFunction ()) | |
1306 | { | |
1307 | recordFunctionType (globtab->entries[uid]); | |
1308 | } | |
1309 | ||
1310 | return (uentry_getAbstractType (ue)); | |
1311 | } | |
1312 | ||
1313 | void | |
1314 | usymtab_supEntrySref (uentry e) | |
1315 | /*@globals utab, globtab, filetab@*/ | |
1316 | /*@modifies utab, globtab, e@*/ | |
1317 | { | |
1318 | sRef old = uentry_getSref (e); | |
616915dd | 1319 | |
1320 | if (sRef_isType (old)) | |
1321 | { | |
1322 | uentry ue = usymtab_supEntryReturnAux (utab, e, TRUE); | |
1323 | ||
1324 | /*@access uentry@*/ | |
1325 | if (uentry_isValid (ue)) | |
1326 | { | |
1327 | sRef uref = uentry_getSref (ue); | |
1328 | ||
1329 | sRef_mergeStateQuiet (uref, old); | |
1330 | sRef_clearDerived (uref); | |
1331 | } | |
1332 | /*@noaccess uentry@*/ | |
1333 | } | |
1334 | else if (sRef_isKnown (old)) | |
1335 | { | |
1336 | usymtab_supEntry (e); | |
1337 | } | |
1338 | else | |
1339 | { | |
1340 | (void) usymtab_supEntryAux (utab, e, TRUE); | |
1341 | } | |
1342 | } | |
1343 | ||
1344 | void usymtab_supGlobalEntry (/*@only@*/ uentry e) | |
1345 | /*@globals globtab, filetab@*/ | |
1346 | /*@modifies globtab, filetab, e@*/ | |
1347 | { | |
1348 | usymId uid; | |
1349 | ||
1350 | DPRINTF (("Sup global entry: %s", uentry_unparse (e))); | |
1351 | ||
1352 | uid = usymtab_supEntryAux (globtab, e, FALSE); | |
1353 | ||
1354 | if (sRef_modInFunction ()) | |
1355 | { | |
1356 | recordFunctionType (globtab->entries[uid]); | |
1357 | } | |
1358 | } | |
1359 | ||
1360 | uentry | |
1361 | usymtab_supReturnFileEntry (/*@only@*/ uentry e) | |
1362 | /*@globals filetab, globtab@*/ | |
1363 | /*@modifies filetab, globtab, e@*/ | |
1364 | { | |
1365 | llassert (filetab != usymtab_undefined); | |
1366 | DPRINTF (("File entry: %s", uentry_unparse (e))); | |
1367 | return (usymtab_supEntryReturnAux (filetab, e, FALSE)); | |
1368 | } | |
1369 | ||
1370 | /* | |
1371 | ** observers | |
1372 | */ | |
1373 | ||
1374 | bool | |
1375 | usymtab_inDeepScope () /*@globals utab@*/ | |
1376 | { | |
1377 | return (utab->lexlevel > paramsScope); | |
1378 | } | |
1379 | ||
1380 | static int | |
1381 | usymtab_getIndex (/*@notnull@*/ usymtab s, cstring k) | |
1382 | { | |
1383 | int i; | |
1384 | ||
28bf4b0b | 1385 | DPRINTF (("Lookup %s", k)); |
616915dd | 1386 | |
28bf4b0b | 1387 | if (cstringTable_isDefined (s->htable)) |
1388 | { | |
1389 | i = cstringTable_lookup (s->htable, k); | |
616915dd | 1390 | return i; |
1391 | } | |
1392 | else | |
1393 | { | |
1394 | for (i = 0; i < s->nentries; i++) | |
1395 | { | |
1396 | uentry current = s->entries[i]; | |
1397 | ||
28bf4b0b | 1398 | DPRINTF (("Check %d: %s", i, uentry_rawName (current))); |
1399 | ||
616915dd | 1400 | if (!uentry_isUndefined (current) |
1401 | && cstring_equal (uentry_rawName (current), k)) | |
1402 | { | |
1403 | return i; | |
1404 | } | |
1405 | } | |
1406 | ||
1407 | return NOT_FOUND; | |
1408 | } | |
1409 | } | |
1410 | ||
1411 | static uentry | |
1412 | usymtab_fetchIndex (/*@notnull@*/ usymtab s, int i) | |
1413 | { | |
1414 | llassert (i >= 0 && i < s->nentries); | |
1415 | return (s->entries[i]); | |
1416 | } | |
1417 | ||
1418 | usymId | |
1419 | usymtab_getTypeId (cstring k) /*@globals globtab@*/ | |
1420 | { | |
1421 | usymId uid = usymtab_getIndex (globtab, k); | |
1422 | ||
1423 | if (uid == NOT_FOUND) return USYMIDINVALID; | |
1424 | ||
1425 | if (!(uentry_isDatatype (usymtab_getTypeEntry (uid)))) { | |
1426 | return USYMIDINVALID; | |
1427 | } | |
1428 | ||
1429 | return uid; | |
1430 | } | |
1431 | ||
1432 | /*@dependent@*/ uentry | |
1433 | usymtab_lookupStructTag (cstring k) | |
1434 | { | |
1435 | cstring sname = makeStruct (k); | |
1436 | uentry ue = usymtab_lookupGlob (sname); | |
28bf4b0b | 1437 | |
1438 | cstring_free (sname); | |
616915dd | 1439 | return (ue); |
1440 | } | |
1441 | ||
1442 | /*@dependent@*/ uentry | |
1443 | usymtab_lookupUnionTag (cstring k) | |
1444 | { | |
1445 | cstring uname = makeUnion (k); | |
1446 | uentry res = usymtab_lookupGlob (uname); | |
1447 | ||
1448 | cstring_free (uname); | |
1449 | return res; | |
1450 | } | |
1451 | ||
1452 | /*@dependent@*/ uentry | |
1453 | usymtab_lookupEnumTag (cstring k) | |
1454 | { | |
1455 | cstring ename = makeEnum (k); | |
1456 | uentry res = usymtab_lookupGlob (ename); | |
1457 | ||
1458 | cstring_free (ename); | |
1459 | return res; | |
1460 | } | |
1461 | ||
1462 | usymId | |
1463 | usymtab_getId (cstring k) /*@globals globtab@*/ | |
1464 | { | |
1465 | usymId uid = usymtab_getIndex (globtab, k); | |
1466 | uentry ue; | |
1467 | ||
1468 | if (uid == NOT_FOUND) | |
1469 | { | |
1470 | return USYMIDINVALID; | |
1471 | } | |
1472 | ||
1473 | ue = usymtab_getGlobalEntry (uid); | |
1474 | ||
1475 | if (uentry_isPriv (ue)) | |
1476 | { | |
1477 | return USYMIDINVALID; | |
1478 | } | |
1479 | ||
1480 | return uid; | |
1481 | } | |
1482 | ||
1483 | static /*@exposed@*/ uentry | |
1484 | usymtab_getEntryAux (/*@notnull@*/ usymtab s, usymId uid) | |
1485 | { | |
1486 | llassert (uid != USYMIDINVALID); | |
1487 | ||
1488 | if (uid < 0 || uid >= s->nentries) | |
1489 | { | |
1490 | llcontbug (message ("usymtab_getEntry: out of range: level = %d [%d]", | |
1491 | s->lexlevel, uid)); | |
1492 | return uentry_undefined; | |
1493 | } | |
1494 | ||
1495 | llassertprint (uentry_isValid (s->entries[uid]), | |
1496 | ("entry undefined: %d", uid)); | |
1497 | ||
1498 | return s->entries[uid]; | |
1499 | } | |
1500 | ||
1501 | /*@dependent@*/ /*@observer@*/ uentry | |
1502 | usymtab_getGlobalEntry (usymId uid) | |
1503 | /*@globals utab, globtab@*/ | |
1504 | { | |
1505 | if (dbgfree) return (uentry_undefined); | |
1506 | ||
1507 | if (utab->lexlevel > paramsScope) | |
1508 | { | |
1509 | /* need to do this the awkward way, since it could be in conditional scope */ | |
1510 | return (usymtab_lookupSafe (uentry_rawName (globtab->entries[uid]))); | |
1511 | } | |
1512 | else | |
1513 | { | |
1514 | return (globtab->entries[uid]); | |
1515 | } | |
1516 | } | |
1517 | ||
1518 | /*@dependent@*/ /*@exposed@*/ uentry | |
1519 | usymtab_getTypeEntry (usymId uid) | |
1520 | /*@globals globtab@*/ | |
1521 | { | |
1522 | if (dbgload) | |
1523 | { | |
1524 | if (uid >= 0 && uid < globtab->nentries) | |
1525 | { | |
1526 | return (globtab->entries[uid]); | |
1527 | } | |
1528 | else | |
1529 | { | |
1530 | return (uentry_undefined); | |
1531 | } | |
1532 | } | |
1533 | else | |
1534 | { | |
28bf4b0b | 1535 | llassert (uid >= 0 && uid < globtab->nentries); |
616915dd | 1536 | return (globtab->entries[uid]); |
1537 | } | |
1538 | } | |
1539 | ||
1540 | /* | |
1541 | ** in load files | |
1542 | */ | |
1543 | ||
1544 | /*@dependent@*/ /*@exposed@*/ uentry | |
1545 | usymtab_getTypeEntrySafe (usymId uid) | |
1546 | /*@globals globtab@*/ | |
1547 | { | |
1548 | if (uid < 0 || uid >= globtab->nentries) | |
1549 | { | |
1550 | return uentry_undefined; | |
1551 | } | |
1552 | ||
1553 | return (globtab->entries[uid]); | |
1554 | } | |
1555 | ||
1556 | bool | |
1557 | usymtab_isBoolType (usymId uid) | |
1558 | /*@globals globtab@*/ | |
1559 | { | |
1560 | llassert (uid >= 0 && uid < globtab->nentries); | |
1561 | ||
1562 | return (cstring_equal (uentry_rawName (globtab->entries[uid]), | |
1563 | context_getBoolName ())); | |
1564 | } | |
1565 | ||
1566 | cstring | |
1567 | usymtab_getTypeEntryName (usymId uid) | |
1568 | /*@globals globtab@*/ | |
1569 | { | |
1570 | uentry ue; | |
1571 | ||
1572 | if (dbgfree) | |
1573 | { | |
1574 | return (cstring_makeLiteral ("<freetype>")); | |
1575 | } | |
1576 | ||
1577 | ue = usymtab_getTypeEntry (uid); | |
1578 | ||
1579 | if (dbgload && !uentry_isValid (ue)) | |
1580 | { | |
1581 | return (message ("<missing type: %d>", uid)); | |
1582 | } | |
1583 | ||
1584 | llassertprint (uentry_isValid (ue), ("type undefined: %d", uid)); | |
1585 | ||
1586 | return (uentry_getName (ue)); | |
1587 | } | |
1588 | ||
8250fa4a | 1589 | # if 0 |
28bf4b0b | 1590 | /*@unused@*/ static void |
616915dd | 1591 | usymtab_rehash (/*@notnull@*/ usymtab s) |
1592 | { | |
1593 | int i; | |
1594 | ||
28bf4b0b | 1595 | if (cstringTable_isDefined (s->htable)) |
616915dd | 1596 | { |
28bf4b0b | 1597 | cstringTable_free (s->htable); |
616915dd | 1598 | } |
1599 | ||
d5047b91 | 1600 | s->htable = cstringTable_create (LLAHSHSIZE); |
616915dd | 1601 | |
1602 | for (i = 0; i < s->nentries; i++) | |
1603 | { | |
28bf4b0b | 1604 | cstringTable_insert (s->htable, cstring_copy (uentry_rawName (s->entries[i])), i); |
616915dd | 1605 | } |
1606 | } | |
8250fa4a | 1607 | # endif |
616915dd | 1608 | |
1609 | /* | |
1610 | ** superficial copy of usymtab | |
1611 | ** | |
1612 | ** DO copy spec entries | |
1613 | */ | |
1614 | ||
1615 | static /*@only@*/ /*@notnull@*/ usymtab | |
1616 | usymtab_shallowCopy (/*@notnull@*/ usymtab s) /*@*/ | |
1617 | { | |
1618 | usymtab copytab = usymtab_createRoot (); | |
1619 | int i; | |
1620 | ||
1621 | for (i = 0; i < s->nentries; i++) | |
1622 | { | |
1623 | usymtab_addEntryBase (copytab, s->entries[i]); | |
1624 | } | |
1625 | ||
1626 | return copytab; | |
1627 | } | |
1628 | ||
1629 | static void | |
1630 | usymtab_shallowFree (/*@only@*/ /*@notnull@*/ usymtab s) | |
1631 | { | |
1632 | aliasTable_free (s->aliases); | |
1633 | refTable_free (s->reftable, s->nentries); | |
1634 | sfree (s->entries); | |
1635 | /*@-compdestroy@*/ sfree (s); /*@=compdestroy@*/ | |
1636 | } | |
1637 | ||
1638 | /* | |
1639 | ** converts usymId from old table to sorted one | |
1640 | */ | |
1641 | ||
1642 | usymId | |
1643 | usymtab_convertId (usymId uid) | |
1644 | /*@globals oldtab, utab@*/ | |
1645 | { | |
1646 | uentry ue; | |
1647 | usymId ret; | |
1648 | cstring name; | |
1649 | ||
1650 | llassert (usymtab_isDefined (oldtab)); | |
1651 | ||
1652 | ue = usymtab_getEntryAux (oldtab, uid); | |
1653 | ||
1654 | llassertprint (uentry_isValid (ue), ("convertId: undefined: %d", uid)); | |
1655 | ||
1656 | name = uentry_rawName (ue); | |
1657 | ||
1658 | ret = usymtab_getIndex (utab, name); | |
28bf4b0b | 1659 | llassert (ret == uid); /*! for now, no rehash! */ |
1660 | DPRINTF (("Convert: %s [%d] -> %s [%d]", | |
1661 | uentry_unparse (ue), uid, | |
1662 | uentry_unparse (utab->entries[ret]), ret)); | |
616915dd | 1663 | |
1664 | llassertprint (ret != USYMIDINVALID, ("convertId: return is invalid")); | |
1665 | ||
1666 | return (ret); | |
1667 | } | |
1668 | ||
1669 | void | |
1670 | usymtab_prepareDump (void) | |
1671 | /*@globals oldtab, utab@*/ | |
1672 | /*@modifies oldtab, utab@*/ | |
1673 | { | |
1674 | llassert (usymtab_inGlobalScope ()); | |
616915dd | 1675 | llassert (oldtab == usymtab_undefined); |
1676 | ||
28bf4b0b | 1677 | /* |
1678 | DPRINTF (("Preparing to dump:")); | |
1679 | usymtab_printAll (); | |
1680 | */ | |
1681 | ||
616915dd | 1682 | oldtab = usymtab_shallowCopy (utab); |
1683 | ||
1684 | /* | |
28bf4b0b | 1685 | ** alpha compare - make sure order is same on different platforms |
1686 | ** error messages appear in same order | |
616915dd | 1687 | */ |
1688 | ||
28bf4b0b | 1689 | /* |
616915dd | 1690 | qsort (utab->entries, (size_t)utab->nentries, |
28bf4b0b | 1691 | sizeof (*utab->entries), |
1692 | (int (*)(const void *, const void *)) uentry_xcomparealpha); | |
1693 | ||
616915dd | 1694 | usymtab_rehash (utab); |
28bf4b0b | 1695 | */ |
1696 | ||
1697 | /* | |
1698 | DPRINTF (("After rehash:")); | |
1699 | usymtab_printAll (); | |
1700 | */ | |
616915dd | 1701 | } |
1702 | ||
28bf4b0b | 1703 | void usymtab_dump (FILE *fout) |
1704 | /*@globals utab, oldtab@*/ | |
616915dd | 1705 | { |
1706 | int i; | |
1707 | bool neednl = FALSE; | |
1708 | uentry lastentry = uentry_undefined; | |
1709 | ekind lastekind = KINVALID; | |
1710 | int linelen = 0; | |
1711 | ||
1712 | /* | |
1713 | ** must call prepareDump first | |
1714 | */ | |
1715 | ||
1716 | llassert (oldtab != usymtab_undefined); | |
1717 | ||
1718 | for (i = 0; i < utab->nentries; i++) | |
1719 | { | |
1720 | uentry thisentry = utab->entries[i]; | |
1721 | ekind thisekind = uentry_getKind (thisentry); | |
1722 | ||
28bf4b0b | 1723 | if (!uentry_hasRealName (thisentry)) |
1724 | { | |
1725 | llassert (uentry_isGlobalMarker (thisentry)); | |
1726 | ||
1727 | if (neednl) | |
1728 | { | |
1729 | check (fputc ('\n', fout) == (int) '\n'); | |
1730 | } | |
1731 | ||
1732 | fprintf (fout, "*%d (GlobalMarker)\n", KGLOBALMARKER); | |
1733 | lastekind = KINVALID; | |
1734 | linelen = 0; | |
1735 | neednl = FALSE; | |
1736 | } | |
1737 | else | |
1738 | { | |
1739 | if (thisekind != lastekind) | |
1740 | { | |
1741 | if (neednl) | |
1742 | { | |
1743 | check (fputc ('\n', fout) == (int) '\n'); | |
1744 | } | |
1745 | ||
1746 | neednl = FALSE; | |
1747 | lastentry = uentry_undefined; | |
1748 | fprintf (fout, "*%d (%s)\n", ekind_toInt (thisekind), | |
1749 | cstring_toCharsSafe (ekind_capName (thisekind))); | |
1750 | lastekind = thisekind; | |
1751 | linelen = 0; | |
1752 | } | |
1753 | ||
1754 | /* | |
1755 | ** evans - 2001-02-18 - added the - 48 fudge factor... | |
1756 | ** extra characters dumped, but I haven't counded them carefully... | |
1757 | */ | |
1758 | ||
1759 | if (uentry_isInvalid (lastentry) || !uentry_equiv (lastentry, thisentry) | |
1760 | || (linelen > (MAX_DUMP_LINE_LENGTH - (2 * MAX_NAME_LENGTH) - 48))) | |
1761 | { | |
1762 | cstring cdump; | |
1763 | ||
1764 | DPRINTF (("Dumping entry: %d", i)); | |
1765 | cdump = message ("^%d %q", i, uentry_dump (thisentry)); | |
1766 | /* was: cdump = uentry_dump (thisentry)); */ | |
1767 | ||
1768 | lastentry = thisentry; | |
1769 | if (neednl) | |
1770 | { | |
1771 | check (fputc ('\n', fout) == (int) '\n'); | |
1772 | linelen = 0; | |
1773 | } | |
1774 | ||
1775 | linelen += cstring_length (cdump); | |
1776 | ||
1777 | /* no new line here! */ | |
1778 | if (cstring_length (cdump) > 0) | |
1779 | { | |
1780 | check (fputs (cstring_toCharsSafe (cdump), fout) != EOF); | |
1781 | } | |
1782 | ||
1783 | cstring_free (cdump); | |
1784 | neednl = TRUE; | |
1785 | } | |
1786 | else | |
1787 | { | |
1788 | cstring cdump = uentry_rawName (thisentry); | |
1789 | DPRINTF (("Raw name: %s", cdump)); | |
1790 | linelen += (cstring_length (cdump) + 1); | |
1791 | fprintf (fout, "#%s", cstring_toCharsSafe (cdump)); | |
1792 | } | |
1793 | } | |
616915dd | 1794 | } |
1795 | ||
1796 | if (neednl) | |
1797 | { | |
1798 | check (fputc ('\n', fout) == (int) '\n'); | |
1799 | } | |
920a3797 | 1800 | |
1801 | lastekind = KINVALID; | |
1802 | ||
1803 | fprintf(fout, ";; Library constraints\n"); | |
35eea586 | 1804 | |
1805 | /*drl July 27 added this so that libraries without | |
1806 | buffer constraints would be handled correctly. | |
1807 | I'm trying to do this without breaking older libraries. | |
1808 | ||
1809 | Splint should still be able to handle libraries without this message. | |
1810 | */ | |
1811 | ||
1812 | ||
1813 | fprintf(fout, "start_Buffer_Constraints\n"); | |
1814 | ||
920a3797 | 1815 | for (i = 0; i < utab->nentries; i++) |
1816 | { | |
1817 | uentry thisentry = utab->entries[i]; | |
1818 | ||
1819 | if (uentry_isFunction (thisentry) ) | |
1820 | { | |
1821 | constraintList preconditions; | |
1822 | constraintList postconditions; | |
1823 | ||
1824 | preconditions = uentry_getFcnPreconditions (thisentry); | |
1825 | postconditions = uentry_getFcnPostconditions (thisentry); | |
1826 | ||
1827 | if ( constraintList_isDefined(preconditions) || | |
1828 | constraintList_isDefined(postconditions) ) | |
1829 | { | |
28bf4b0b | 1830 | fprintf(fout,"%s\n", cstring_toCharsSafe (uentry_rawName(thisentry) ) ); |
920a3797 | 1831 | if (constraintList_isDefined(preconditions) ) |
1832 | { | |
1833 | fprintf(fout,"pre:\n"); | |
1834 | constraintList_dump(preconditions, fout); | |
1835 | fprintf (fout, ";; end precondition constraints\n" ); | |
1836 | constraintList_free(preconditions); | |
1837 | } | |
1838 | else | |
1839 | { | |
1840 | fprintf(fout,"pre:EMPTY\n"); | |
1841 | } | |
1842 | if (constraintList_isDefined(postconditions) ) | |
1843 | { | |
1844 | fprintf(fout,"post:\n"); | |
1845 | constraintList_dump(postconditions, fout); | |
1846 | fprintf (fout, ";; end precondition constraints\n" ); | |
1847 | constraintList_free(postconditions); | |
1848 | } | |
1849 | else | |
1850 | { | |
1851 | fprintf(fout,"post:EMPTY\n"); | |
1852 | } | |
1853 | } | |
1854 | ||
1855 | } | |
1856 | } | |
616915dd | 1857 | } |
1858 | ||
3e3ec469 | 1859 | |
616915dd | 1860 | void usymtab_load (FILE *f) |
1861 | /*@globals utab, globtab@*/ | |
1862 | /*@modifies utab, *f@*/ | |
1863 | { | |
1864 | char *s = mstring_create (MAX_DUMP_LINE_LENGTH); | |
1865 | char *os = s; | |
1866 | ekind kind = KINVALID; | |
1867 | fileloc loc = g_currentloc; | |
1868 | char c; | |
1869 | uentry ue; | |
1870 | ||
1871 | dbgload = TRUE; | |
1872 | ||
1873 | llassert (utab == globtab); | |
1874 | llassert (utab->nentries == 0); | |
1875 | ||
28bf4b0b | 1876 | while (((s = reader_readLine (f, s, MAX_DUMP_LINE_LENGTH)) != NULL) |
616915dd | 1877 | && *s == ';') |
1878 | { | |
28bf4b0b | 1879 | /* ignore ; comments */ ; |
616915dd | 1880 | } |
28bf4b0b | 1881 | |
616915dd | 1882 | while (s != NULL && *s != ';') |
1883 | { | |
28bf4b0b | 1884 | int index; |
1885 | ||
616915dd | 1886 | if (*s == '*') |
1887 | { | |
28bf4b0b | 1888 | int ek; |
616915dd | 1889 | s++; |
28bf4b0b | 1890 | ek = reader_getInt (&s); |
616915dd | 1891 | |
28bf4b0b | 1892 | if (ek == KGLOBALMARKER) |
1893 | { | |
1894 | uentry lue = uentry_makeGlobalMarker (); | |
1895 | DPRINTF (("Adding global marker: %s", uentry_unparseFull (lue))); | |
1896 | usymtab_addEntryAlways (utab, lue); | |
1897 | kind = KINVALID; | |
1898 | goto nextiter; | |
1899 | } | |
1900 | else | |
1901 | { | |
1902 | kind = ekind_fromInt (ek); | |
1903 | goto nextiter; | |
1904 | } | |
616915dd | 1905 | } |
1906 | ||
1907 | if (*s == '$') | |
1908 | { | |
1909 | llfatalerror | |
1910 | (cstring_makeLiteral | |
1b8ae690 | 1911 | ("Library is in obsolete format. Use splint +whichlib " |
616915dd | 1912 | "to see which library is being loaded.")); |
1913 | } | |
1914 | ||
28bf4b0b | 1915 | if (reader_optCheckChar (&s, '^')) |
1916 | { | |
1917 | index = reader_getInt (&s); | |
1918 | } | |
1919 | else | |
1920 | { | |
1921 | index = -1; | |
1922 | } | |
1923 | ||
1924 | llassert (kind != KINVALID); | |
616915dd | 1925 | ue = uentry_undump (kind, loc, &s); |
28bf4b0b | 1926 | |
1927 | llassert (utab->nentries == index || index == -1); | |
616915dd | 1928 | |
1929 | if (uentry_isValid (ue)) | |
1930 | { | |
28bf4b0b | 1931 | int lastindex = utab->nentries; |
1932 | ue = usymtab_addEntryAlways (utab, ue); | |
3e3ec469 | 1933 | |
1934 | ||
1935 | # if 0 | |
1936 | if (uentry_isConstant (ue)) /*@i23! isPreProcessorMacro */ | |
1937 | { | |
1938 | cstring uname = uentry_getName (ue); | |
1939 | ||
1940 | /* Also check its a macro... */ | |
1941 | DPRINTF (("Installing: %s", uname)); | |
1942 | ||
1943 | cpphash_installMacro | |
1944 | (mstring_copy (cstring_toCharsSafe (uname)), | |
1945 | cstring_length (uname), | |
1946 | cpplib_createDefinition (message ("%s 255", uname), | |
1947 | loc, | |
1948 | FALSE, FALSE).defn, | |
1949 | cpphash_hashCode (cstring_toCharsSafe (uname), | |
1950 | cstring_length (uname), | |
1951 | CPP_HASHSIZE)); | |
1952 | ||
1953 | DPRINTF (("After install: %s", uname)); | |
1954 | } | |
1955 | # endif | |
1956 | ||
28bf4b0b | 1957 | if (utab->nentries != lastindex + 1) |
1958 | { | |
1959 | DPRINTF (("No add: %s", uentry_unparseFull (ue))); | |
1960 | BADBRANCH; | |
1961 | } | |
616915dd | 1962 | /*@-branchstate@*/ |
1963 | } | |
1964 | /*@=branchstate@*/ | |
1965 | ||
1966 | /* | |
1967 | ** now, any other names are the same uentry | |
1968 | */ | |
1969 | ||
1970 | while (*(s++) == '#') | |
1971 | { | |
28bf4b0b | 1972 | cstring name = cstring_fromCharsO (reader_getWord (&s)); |
616915dd | 1973 | uentry nue = uentry_nameCopy (name, ue); |
28bf4b0b | 1974 | /* |
1975 | DPRINTF (("Name copy: %s", uentry_unparseFull (nue))); | |
1976 | BADBRANCH; | |
1977 | */ | |
616915dd | 1978 | |
28bf4b0b | 1979 | usymtab_addEntryAlways (utab, nue); |
616915dd | 1980 | } |
1981 | ||
1982 | while ((c = *s) != '\0' && (c !='\n')) | |
1983 | { | |
1984 | if (c != ' ' || c != '\t') | |
1985 | { | |
1986 | llbuglit ("Junk in load file"); | |
1987 | } | |
1988 | ||
1989 | s++; | |
1990 | } | |
1991 | ||
1992 | nextiter: | |
28bf4b0b | 1993 | { |
1994 | s = reader_readLine (f, os, MAX_DUMP_LINE_LENGTH); | |
1995 | } | |
616915dd | 1996 | } |
1997 | ||
920a3797 | 1998 | /*DRL added 6/21/01 |
1999 | to handle reading of buffer overflow related constraints | |
2000 | */ | |
2001 | while (fgets (s, MAX_DUMP_LINE_LENGTH, f) != NULL | |
2002 | && *s == ';') | |
2003 | { | |
2004 | ; /* ignore ;-comments */ | |
2005 | } | |
35eea586 | 2006 | |
2007 | /*drl July 27 added this so that libraries without | |
2008 | buffer constraints would be handled correctly. | |
2009 | I'm trying to do this without breaking older libraries*/ | |
2010 | ||
2011 | /*check for "optional" start buffer constraints message*/ | |
d9daf826 | 2012 | if (cstring_compareLit(cstring_fromChars(s), "start_Buffer_Constraints\n") == 0 ) |
35eea586 | 2013 | { |
d9daf826 | 2014 | (void)fgets (s, MAX_DUMP_LINE_LENGTH, f); |
35eea586 | 2015 | } |
920a3797 | 2016 | |
2017 | while (s != NULL && *s != ';') | |
2018 | { | |
2019 | constraintList preconditions; | |
2020 | constraintList postconditions; | |
2021 | ||
28bf4b0b | 2022 | cstring name = cstring_fromChars(reader_getWord(&s) ); |
920a3797 | 2023 | cstring temp; |
2024 | ue = usymtab_lookup ( name ); | |
2025 | ||
2026 | cstring_free(name); | |
2027 | ||
2028 | preconditions = constraintList_undefined; | |
2029 | postconditions = constraintList_undefined; | |
2030 | ||
2031 | if (!uentry_isValid(ue) ) | |
2032 | { | |
28bf4b0b | 2033 | llfatalbug ((message("Invalid uentry for %s library file may be corrupted", cstring_fromChars(s) ) )); |
920a3797 | 2034 | } |
2035 | s = fgets (os, MAX_DUMP_LINE_LENGTH, f); | |
2036 | ||
ccf0a4a8 | 2037 | temp = cstring_fromChars (reader_getWord(&s) ); |
920a3797 | 2038 | |
28bf4b0b | 2039 | if (cstring_compareLit (temp,"pre:") == 0 ) |
920a3797 | 2040 | { |
3814599d | 2041 | preconditions = constraintList_undump (f); |
920a3797 | 2042 | } |
28bf4b0b | 2043 | else |
2044 | { | |
2045 | if (cstring_compareLit (temp,"pre:EMPTY") != 0 ) | |
2046 | llfatalbug ((message("Error reading library file pre:EMPTY expected but got %s", temp ) )); | |
2047 | } | |
2048 | ||
920a3797 | 2049 | cstring_free(temp); |
2050 | ||
2051 | s = fgets (os, MAX_DUMP_LINE_LENGTH, f); | |
2052 | ||
28bf4b0b | 2053 | temp = cstring_fromChars(reader_getWord(&s) ); |
ccf0a4a8 | 2054 | if (cstring_compareLit (temp, "post:") == 0 ) |
920a3797 | 2055 | { |
3814599d | 2056 | postconditions = constraintList_undump (f); |
920a3797 | 2057 | } |
28bf4b0b | 2058 | else |
2059 | { | |
ccf0a4a8 | 2060 | if (cstring_compareLit (temp, "post:EMPTY") != 0 ) |
28bf4b0b | 2061 | llfatalbug ((message("Error reading library file post:EMPTY expected but got %s", temp ) )); |
2062 | } | |
2063 | ||
ccf0a4a8 | 2064 | cstring_free (temp); |
920a3797 | 2065 | |
3814599d | 2066 | uentry_setPreconditions (ue, functionConstraint_createBufferConstraint (preconditions)); |
2067 | uentry_setPostconditions (ue, functionConstraint_createBufferConstraint (postconditions)); | |
920a3797 | 2068 | |
2069 | s = fgets (os, MAX_DUMP_LINE_LENGTH, f); | |
2070 | } | |
2071 | ||
616915dd | 2072 | dbgload = FALSE; |
2073 | sfree (os); | |
2074 | } | |
2075 | ||
2076 | /* | |
2077 | ** file scope for static variables | |
2078 | */ | |
2079 | ||
2080 | void | |
2081 | usymtab_enterFile () | |
2082 | /*@globals utab, globtab, filetab@*/ | |
2083 | /*@modifies filetab@*/ | |
2084 | { | |
2085 | llassert (utab == globtab); | |
2086 | ||
2087 | # if 0 | |
2088 | /* check globals */ | |
2089 | ||
2090 | usymtab_entries (globtab, ue) | |
2091 | { | |
2092 | if (sRef_hasDerived (uentry_getSref (ue))) | |
2093 | { | |
80489f0a | 2094 | fprintf (g_warningstream, "Derived Global: %s\n", uentry_unparse (ue)); |
2095 | fprintf (g_warningstream, "sRef: %s\n", sRef_unparseFull (ue->sref)); | |
616915dd | 2096 | } |
2097 | } end_usymtab_entries ; | |
2098 | ||
2099 | # endif | |
2100 | ||
2101 | usymtab_enterScope (); | |
2102 | filetab = utab; | |
2103 | } | |
2104 | ||
2105 | void | |
2106 | usymtab_exitFile () | |
2107 | /*@globals utab, filetab@*/ | |
2108 | /*@modifies filetab, utab@*/ | |
2109 | { | |
2110 | ||
2111 | llassert (utab->lexlevel == 1); | |
2112 | ||
2113 | usymtab_exitScope (exprNode_undefined); | |
2114 | filetab = NULL; | |
2115 | } | |
2116 | ||
2117 | void | |
2118 | usymtab_enterScope () | |
2119 | /*@globals utab, globtab, filetab@*/ | |
2120 | /*@modifies utab@*/ | |
2121 | { | |
2122 | usymtab t = usymtab_create (US_NORMAL, utab, TRUE); | |
2123 | ||
2124 | /* unconditional scope: optimize to avoid copy */ | |
2125 | t->aliases = aliasTable_copy (utab->aliases); | |
2126 | utab = t; | |
2127 | ||
2128 | llassert (usymtab_isDefined (t->env)); | |
2129 | ||
2130 | if (t->env->lexlevel == paramsScope && context_inFunctionLike ()) | |
2131 | { | |
2132 | noshadowerror = TRUE; | |
2133 | usymtab_handleParams (); | |
2134 | noshadowerror = FALSE; | |
2135 | } | |
2136 | } | |
2137 | ||
2138 | /* | |
2139 | ** setup external references: | |
2140 | ** o only, unique params alias external args | |
2141 | ** o other params may alias anything of their type | |
2142 | */ | |
2143 | ||
2144 | static void | |
2145 | usymtab_handleParams (void) | |
2146 | /*@globals utab, globtab, filetab@*/ | |
2147 | /*@modifies utab, globtab@*/ | |
2148 | { | |
2149 | usymtab ptab = utab->env; | |
2150 | uentry fcn = context_getHeader (); | |
2151 | ||
616915dd | 2152 | usymtab_entries (ptab, param) |
2153 | { | |
2154 | uentry ue; | |
2155 | ||
2156 | if (!uentry_isYield (param)) | |
2157 | { | |
2158 | sRef uref; | |
2159 | sRef pref = uentry_getSref (param); | |
616915dd | 2160 | |
28bf4b0b | 2161 | /* Could be a global. */ |
616915dd | 2162 | |
28bf4b0b | 2163 | if (uentry_isAnyParam (param)) |
2164 | { | |
2165 | ue = uentry_makeVariable (fixParamName (uentry_rawName (param)), | |
2166 | uentry_getType (param), | |
2167 | fileloc_copy (uentry_whereDeclared (param)), | |
2168 | FALSE); | |
2169 | ||
2170 | uentry_copyState (ue, param); | |
2171 | uentry_setRefParam (ue); | |
2172 | ||
2173 | ue = usymtab_supEntrySrefReturn (ue); | |
2174 | ||
2175 | /* must be after supercede! */ | |
2176 | ||
2177 | if (!sRef_stateKnown (pref)) | |
616915dd | 2178 | { |
28bf4b0b | 2179 | uentry_setDefState (ue, SS_DEFINED); |
2180 | uentry_setDefState (param, SS_DEFINED); | |
616915dd | 2181 | } |
2182 | else | |
2183 | { | |
28bf4b0b | 2184 | if (sRef_isStateSpecial (pref)) |
2185 | { | |
3e3ec469 | 2186 | uentry_setDefState (ue, SS_SPECIAL); /* ALLOCATED); */ |
2187 | /* evans 2002-01-01: should be unnecessary, the pre clauses | |
2188 | ** set the state if necessary. | |
2189 | */ | |
28bf4b0b | 2190 | } |
2191 | else | |
2192 | { | |
2193 | uentry_setDefState (ue, sRef_getDefState (pref)); | |
2194 | } | |
616915dd | 2195 | } |
28bf4b0b | 2196 | |
2197 | uref = uentry_getSref (ue); | |
2198 | ||
2199 | if (sRef_isStack (uref)) | |
616915dd | 2200 | { |
28bf4b0b | 2201 | alkind pkind = sRef_getAliasKind (pref); |
2202 | ||
2203 | if (alkind_isKnown (pkind) && !alkind_isLocal (pkind) | |
2204 | && !alkind_isStack (pkind)) | |
616915dd | 2205 | { |
28bf4b0b | 2206 | sRef_setAliasKind (uref, pkind, fileloc_undefined); |
2207 | sRef_setOrigAliasKind (uref, pkind); | |
616915dd | 2208 | } |
2209 | else | |
2210 | { | |
28bf4b0b | 2211 | sRef_setAliasKind (uref, AK_IMPTEMP, fileloc_undefined); |
2212 | sRef_setOrigAliasKind (uref, AK_IMPTEMP); | |
2213 | ||
2214 | if (uentry_isOut (param)) | |
2215 | { | |
2216 | ; | |
2217 | } | |
2218 | else | |
2219 | { | |
2220 | sRef_setDefined (uref, fileloc_undefined); | |
2221 | } | |
616915dd | 2222 | } |
28bf4b0b | 2223 | |
616915dd | 2224 | } |
28bf4b0b | 2225 | |
2226 | usymtab_addMustAlias (uref, pref); | |
2227 | ||
2228 | if (!(uentry_isOnly (param) || uentry_isUnique (param))) | |
2229 | { | |
2230 | /* | |
2231 | ** This is needed for detecting possibly aliased parameters. | |
2232 | */ | |
616915dd | 2233 | |
28bf4b0b | 2234 | sRef s = sRef_makeExternal (uref); |
2235 | usymtab_addMustAlias (uref, s); | |
2236 | } | |
2237 | ||
2238 | if (sRef_isKillRef (pref)) | |
2239 | { | |
2240 | sRef_setAliasKind (uref, AK_NEWREF, fileloc_undefined); | |
2241 | sRef_setOrigAliasKind (uref, AK_KILLREF); | |
2242 | } | |
2243 | else if (sRef_isRefCounted (uref)) | |
2244 | { | |
2245 | sRef_setOrigAliasKind (uref, AK_REFCOUNTED); | |
2246 | } | |
2247 | else | |
2248 | { | |
2249 | /* was AK_UNIQUE */ | |
2250 | sRef_setOrigAliasKind (uref, AK_LOCAL); | |
2251 | } | |
616915dd | 2252 | } |
2253 | else | |
2254 | { | |
616915dd | 2255 | } |
2256 | } | |
616915dd | 2257 | } end_usymtab_entries; |
28bf4b0b | 2258 | |
2259 | ||
2260 | if (uentry_hasStateClauseList (fcn)) | |
616915dd | 2261 | { |
28bf4b0b | 2262 | stateClauseList clauses = uentry_getStateClauseList (fcn); |
2263 | ||
2264 | stateClauseList_preElements (clauses, cl) | |
616915dd | 2265 | { |
28bf4b0b | 2266 | fileloc loc = stateClause_loc (cl); |
2267 | sRefSet osrs = sRefSet_undefined; | |
2268 | sRefSet srs; | |
616915dd | 2269 | |
28bf4b0b | 2270 | if (stateClause_isGlobal (cl)) |
2271 | { | |
2272 | DPRINTF (("Global Marker: %s", | |
2273 | sRef_unparseFull (usymtab_lookupGlobalMarker ()))); | |
2274 | llassert (sRef_isGlobalMarker (usymtab_lookupGlobalMarker ())); | |
2275 | srs = sRefSet_single (usymtab_lookupGlobalMarker ()); | |
2276 | osrs = srs; | |
2277 | } | |
2278 | else | |
2279 | { | |
2280 | srs = stateClause_getRefs (cl); | |
2281 | } | |
2282 | ||
2283 | sRefSet_elements (srs, el) | |
616915dd | 2284 | { |
2285 | sRef base = sRef_getRootBase (el); | |
28bf4b0b | 2286 | sRef sb = sRef_updateSref (el); |
2287 | ||
616915dd | 2288 | if (sRef_isResult (base)) |
2289 | { | |
2290 | ; /* nothing to do before */ | |
2291 | } | |
28bf4b0b | 2292 | else if (sRef_isParam (base) || sRef_isGlobalMarker (base)) |
616915dd | 2293 | { |
28bf4b0b | 2294 | if (stateClause_setsMetaState (cl)) |
616915dd | 2295 | { |
28bf4b0b | 2296 | /* copied from exprNode.c:3040 */ |
2297 | qual ql = stateClause_getMetaQual (cl); | |
2298 | annotationInfo ainfo = qual_getAnnotationInfo (ql); | |
2299 | metaStateInfo minfo = annotationInfo_getState (ainfo); | |
2300 | cstring key = metaStateInfo_getName (minfo); | |
2301 | int mvalue = annotationInfo_getValue (ainfo); | |
616915dd | 2302 | |
28bf4b0b | 2303 | DPRINTF (("Sets meta state! %s", stateClause_unparse (cl))); |
2304 | ||
2305 | if (sRef_isResult (base)) | |
616915dd | 2306 | { |
28bf4b0b | 2307 | BADBRANCH; |
2308 | } | |
2309 | else | |
2310 | { | |
2311 | sRef_setMetaStateValueComplete (sb, key, mvalue, loc); | |
2312 | } | |
2313 | } | |
2314 | else | |
2315 | { | |
2316 | sRefMod modf = stateClause_getEntryFunction (cl); | |
2317 | ||
2318 | if (modf != NULL) | |
2319 | { | |
2320 | sRefSet aliases = usymtab_allAliases (sb); | |
2321 | ||
2322 | modf (sb, loc); | |
2323 | ||
2324 | sRefSet_elements (aliases, sr) | |
2325 | { | |
2326 | modf (sr, loc); | |
2327 | } end_sRefSet_elements ; | |
2328 | ||
2329 | sRefSet_free (aliases); | |
2330 | } | |
616915dd | 2331 | } |
2332 | } | |
2333 | else | |
2334 | { | |
2335 | if (sRef_isValid (base)) | |
2336 | { | |
28bf4b0b | 2337 | DPRINTF (("Base: %s", sRef_unparseFull (base))); |
616915dd | 2338 | BADBRANCH; |
2339 | } | |
2340 | } | |
2341 | } end_sRefSet_elements ; | |
28bf4b0b | 2342 | } end_stateClauseList_preElements ; |
2343 | } | |
2344 | } | |
2345 | ||
616915dd | 2346 | void |
2347 | usymtab_enterFunctionScope (uentry fcn) | |
2348 | /*@globals utab, filetab, globtab@*/ | |
2349 | /*@modifies utab@*/ | |
2350 | { | |
2351 | usymtab t = usymtab_create (US_NORMAL, utab, TRUE); | |
2352 | ||
6483a926 | 2353 | DPRINTF (("Enter function: %s", uentry_unparse (fcn))); |
2354 | ||
616915dd | 2355 | if (utab->lexlevel != fileScope) |
2356 | { | |
2357 | if (utab->lexlevel > fileScope) | |
2358 | { | |
7ebcc5bb | 2359 | llparseerror (cstring_makeLiteral ("New function scope inside function")); |
616915dd | 2360 | |
2361 | while (utab->lexlevel > fileScope) | |
2362 | { | |
2363 | /*@i@*/ utab = usymtab_dropEnv (utab); | |
2364 | /*@-branchstate@*/ | |
2365 | } | |
2366 | /*@=branchstate@*/ | |
2367 | } | |
2368 | else | |
2369 | { | |
2370 | llfatalbug (cstring_makeLiteral ("New function not inside file.")); | |
2371 | } | |
2372 | /*@-branchstate@*/ } /*@=branchstate@*/ | |
2373 | ||
28bf4b0b | 2374 | utab = t; |
2375 | ||
2376 | DPRINTF (("Globs: %s", globSet_unparse (uentry_getGlobs (fcn)))); | |
2377 | ||
616915dd | 2378 | globSet_allElements (uentry_getGlobs (fcn), el) |
2379 | { | |
28bf4b0b | 2380 | DPRINTF (("Here we go: %s", sRef_unparseFull (el))); |
616915dd | 2381 | |
2382 | if (sRef_isUndefGlob (el)) | |
2383 | { | |
2384 | int index = sRef_getScopeIndex (el); | |
2385 | sRef sr = sRef_updateSref (el); | |
2386 | fileloc loc = uentry_whereEarliest (fcn); | |
28bf4b0b | 2387 | |
2388 | DPRINTF (("update: %s", sRef_unparseFull (sr))); | |
2389 | DPRINTF (("Undef!")); | |
616915dd | 2390 | if (sRef_isFileStatic (el)) |
2391 | { | |
2392 | ctype ct = sRef_getType (el); | |
2393 | uentry ue; | |
2394 | ||
2395 | llassert (usymtab_isDefined (filetab)); | |
2396 | ||
2397 | ue = usymtab_fetchIndex (filetab, index); | |
2398 | ||
2399 | if (ctype_isRealArray (ct) || ctype_isRealSU (ct)) | |
2400 | { | |
2401 | sRef_setAllocated (sr, loc); | |
2402 | } | |
2403 | else | |
2404 | { | |
2405 | sRef_setUndefined (sr, loc); | |
2406 | } | |
2407 | } | |
2408 | else | |
2409 | { | |
2410 | uentry ue = globtab->entries[index]; | |
2411 | ctype ct = uentry_getType (ue); | |
2412 | ||
2413 | if (ctype_isArray (ct) || ctype_isSU (ct)) | |
2414 | { | |
2415 | sRef_setAllocated (sr, loc); | |
2416 | } | |
2417 | else | |
2418 | { | |
2419 | sRef_setUndefined (sr, loc); | |
2420 | } | |
2421 | } | |
2422 | } | |
2423 | else if (sRef_isAllocated (el)) | |
2424 | { | |
2425 | sRef sr = sRef_updateSref (el); | |
2426 | fileloc loc = uentry_whereEarliest (fcn); | |
2427 | ||
2428 | sRef_setAllocated (sr, loc); | |
2429 | } | |
2430 | else if (sRef_isPartial (el)) | |
2431 | { | |
2432 | sRef sr = sRef_updateSref (el); | |
2433 | fileloc loc = uentry_whereEarliest (fcn); | |
2434 | ||
2435 | sRef_setPartial (sr, loc); | |
2436 | } | |
2437 | else | |
2438 | { | |
28bf4b0b | 2439 | /* |
2440 | sRef sr = sRef_updateSref (el); | |
2441 | fileloc loc = uentry_whereEarliest (fcn); | |
2442 | ||
2443 | sRef_setDefined (sr, loc); | |
2444 | */ | |
2445 | ||
2446 | /* defined */ | |
2447 | /* shouldn't need to do anything! */ | |
616915dd | 2448 | } |
2449 | } end_globSet_allElements; | |
2450 | ||
28bf4b0b | 2451 | DPRINTF (("Globs after: %s", globSet_unparse (uentry_getGlobs (fcn)))); |
6483a926 | 2452 | # ifdef DEBUGSPLINT |
2453 | usymtab_checkAllValid (); | |
2454 | # endif | |
616915dd | 2455 | } |
2456 | ||
2457 | static void | |
2458 | usymtab_caseBranch (void) | |
2459 | /*@modifies utab@*/ | |
2460 | { | |
2461 | usymtab t = usymtab_create (US_CBRANCH, utab, FALSE); | |
2462 | utab = t; | |
2463 | } | |
2464 | ||
2465 | void | |
2466 | usymtab_switchBranch (/*@unused@*/ exprNode s) | |
2467 | /*@modifies utab@*/ | |
2468 | { | |
2469 | usymtab t = usymtab_create (US_SWITCH, utab, FALSE); | |
2470 | ||
2471 | t->aliases = aliasTable_copy (utab->aliases); | |
28bf4b0b | 2472 | utab = t; |
616915dd | 2473 | } |
2474 | ||
2475 | void | |
2476 | usymtab_trueBranch (/*@only@*/ guardSet guards) | |
2477 | /*@modifies utab@*/ | |
2478 | { | |
2479 | usymtab t = usymtab_create (US_TBRANCH, utab, FALSE); | |
2480 | ||
2481 | /* | |
2482 | ** not true! (could be in a macro) | |
2483 | ** | |
2484 | ** llassertprint (utab->lexlevel > paramsScope, | |
2485 | ** ("not in scope: %s", usymtab_unparseLocal ())); | |
2486 | ** | |
2487 | */ | |
2488 | ||
2489 | guardSet_free (t->guards); | |
2490 | t->guards = guards; | |
28bf4b0b | 2491 | |
2492 | aliasTable_free (t->aliases); | |
616915dd | 2493 | t->aliases = aliasTable_copy (utab->aliases); |
2494 | ||
28bf4b0b | 2495 | utab = t; |
616915dd | 2496 | } |
2497 | ||
2498 | /* | |
2499 | ** consider, | |
2500 | ** | |
2501 | ** { int a; if (...) a = 3; < a may be undefined here! | |
2502 | ** | |
2503 | */ | |
2504 | ||
2505 | void | |
28bf4b0b | 2506 | usymtab_popTrueBranch (exprNode pred, exprNode expr, clause cl) /*@modifies utab@*/ |
616915dd | 2507 | { |
2508 | /* | |
2509 | ** add a false branch | |
2510 | ** (could be done more efficiently as a special case, but | |
2511 | ** it is better to only maintain one version of the code) | |
2512 | */ | |
2513 | ||
28bf4b0b | 2514 | if (utab->kind != US_TBRANCH |
2515 | && context_inIterDef ()) | |
2516 | { | |
2517 | usymtab_exitScope (expr); | |
2518 | } | |
2519 | else | |
2520 | { | |
2521 | DPRINTF (("pop true branch..")); | |
2522 | usymtab_altBranch (guardSet_invert (exprNode_getGuards (pred))); | |
2523 | usymtab_popBranches (pred, expr, exprNode_undefined, TRUE, cl); | |
2524 | } | |
616915dd | 2525 | } |
2526 | ||
2527 | void | |
2528 | usymtab_popCaseBranch () /*@modifies utab@*/ | |
2529 | { | |
2530 | llassert (utab->kind == US_CBRANCH); | |
2531 | usymtab_quietPlainExitScope (); | |
2532 | } | |
2533 | ||
2534 | void | |
2535 | usymtab_popTrueExecBranch (exprNode pred, exprNode expr, clause cl) | |
2536 | { | |
2537 | /* | |
2538 | ** add a false branch that must return --- that is, | |
2539 | ** the true branch is always executed! | |
2540 | */ | |
2541 | ||
2542 | usymtab_altBranch (guardSet_invert (exprNode_getGuards (pred))); | |
2543 | usymtab_popBranches (pred, expr, exprNode_makeMustExit (), FALSE, cl); | |
2544 | } | |
2545 | ||
2546 | void | |
2547 | usymtab_popOrBranch (exprNode pred, exprNode expr) | |
2548 | /*@modifies utab@*/ | |
2549 | { | |
2550 | bool mustReturn; | |
2551 | usymtab env = utab->env; | |
2552 | usymtab otab = utab; | |
2553 | int i = 0; | |
2554 | ||
2555 | llassert (env != NULL); | |
2556 | ||
2557 | if (exprNode_isError (expr)) | |
2558 | { | |
2559 | mustReturn = FALSE; | |
2560 | } | |
2561 | else | |
2562 | { | |
2563 | mustReturn = exprNode_mustEscape (expr); | |
2564 | } | |
2565 | ||
2566 | ||
2567 | llassert (utab->kind == US_TBRANCH); | |
2568 | ||
2569 | /* | |
2570 | ** merge each entry in table with its original | |
2571 | ** unless execution cannot continue after this branch | |
2572 | */ | |
2573 | ||
2574 | for (i = 0; i < utab->nentries; i++) | |
2575 | { | |
2576 | uentry current = utab->entries[i]; | |
2577 | uentry old = usymtab_lookupAux (env, uentry_rawName (current)); | |
2578 | ||
2579 | uentry_mergeState (old, current, exprNode_loc (expr), | |
2580 | mustReturn, FALSE, TRUE, ORCLAUSE); | |
2581 | } | |
2582 | ||
2583 | ||
2584 | if (mustReturn) | |
2585 | { | |
2586 | env->guards = guardSet_levelUnionFree (env->guards, | |
2587 | guardSet_invert (exprNode_getGuards (pred)), | |
2588 | env->lexlevel); | |
2589 | } | |
2590 | else | |
2591 | { | |
2592 | env->aliases = aliasTable_levelUnion (env->aliases, otab->aliases, env->lexlevel); | |
2593 | } | |
2594 | ||
2595 | /* env is now utab */ | |
2596 | usymtab_quietPlainExitScope (); | |
2597 | } | |
2598 | ||
2599 | /* | |
2600 | ** case syntax in C is very unrestricted. This is unfortunate. | |
2601 | ** | |
2602 | ** A switch case is ended either by a new case or default, or | |
2603 | ** a close } that may close the switch or some other control | |
2604 | ** structure. | |
2605 | */ | |
2606 | ||
2607 | bool | |
2608 | usymtab_newCase (/*@unused@*/ exprNode pred, exprNode last) | |
2609 | /*@modifies utab@*/ | |
2610 | { | |
2611 | bool mustBreak = usymtab_mustBreak (utab); | |
2612 | bool mustReturn = usymtab_mustEscape (utab); | |
2613 | usymtab stab = utab; | |
2614 | ||
7ac543fa | 2615 | DPRINTF (("New case!")); |
2616 | ||
616915dd | 2617 | /* |
2618 | ** Find last case (or outer switch) | |
2619 | */ | |
2620 | ||
2621 | while (stab->kind != US_CBRANCH && stab->kind != US_SWITCH) | |
2622 | { | |
2623 | stab = stab->env; | |
2624 | llassert (stab != GLOBAL_ENV); | |
2625 | } | |
7ac543fa | 2626 | |
616915dd | 2627 | while (stab->kind == US_CBRANCH) |
2628 | { | |
2629 | stab = stab->env; | |
2630 | llassert (stab != GLOBAL_ENV); | |
2631 | } | |
2632 | ||
2633 | /* | |
2634 | ** if its a fall through case, merge in outside entries and last case. | |
2635 | ** | |
2636 | ** e.g., | |
2637 | ** ... | |
2638 | ** switch | |
2639 | ** case 1: x = 3; <fall through> | |
2640 | ** case 2: << x may not be defined | |
2641 | ** | |
2642 | */ | |
2643 | ||
2644 | if (!mustBreak && !mustReturn && utab->kind == US_CBRANCH) | |
2645 | { | |
2646 | llassert (stab->kind == US_SWITCH || stab->kind == US_NORMAL); | |
2647 | ||
2648 | usymtab_entries (utab, ue) /* but, keep track of used variables */ | |
2649 | { | |
2650 | uentry old = usymtab_lookupAux (stab, uentry_rawName (ue)); | |
2651 | ||
2652 | llassert (uentry_isValid (old)); | |
2653 | ||
2654 | /* modifies ue, not old */ | |
2655 | ||
2656 | uentry_mergeState (ue, old, exprNode_loc (last), | |
2657 | FALSE, FALSE, TRUE, CASECLAUSE); | |
2658 | } end_usymtab_entries; | |
2659 | ||
2660 | utab->aliases = aliasTable_levelUnion (utab->aliases, | |
2661 | stab->aliases, utab->lexlevel); | |
2662 | ||
2663 | /* | |
2664 | ** No need for a new branch. | |
2665 | */ | |
2666 | ||
2667 | return FALSE; | |
2668 | } | |
2669 | else | |
2670 | { | |
2671 | usymtab_caseBranch (); | |
2672 | /*@-mustfree@*/ /*< utab->aliases >*/ | |
2673 | utab->aliases = aliasTable_copy (stab->aliases); | |
2674 | /*@=mustfree@*/ | |
2675 | ||
2676 | return TRUE; | |
2677 | } | |
2678 | } | |
2679 | ||
2680 | /* | |
2681 | ** for && (both pred and expr are executed) | |
2682 | */ | |
2683 | ||
2684 | void | |
2685 | usymtab_popAndBranch (exprNode pred, /*@unused@*/ exprNode expr) | |
2686 | /*@modifies utab@*/ | |
2687 | { | |
2688 | usymtab env = utab->env; | |
2689 | usymtab otab= utab; | |
2690 | int i = 0; | |
2691 | ||
28bf4b0b | 2692 | llassert (utab->kind == US_TBRANCH); |
616915dd | 2693 | |
2694 | /* | |
2695 | ** merge each entry in table with its original | |
2696 | ** unless execution cannot continue after this branch | |
2697 | */ | |
2698 | ||
2699 | for (i = 0; i < utab->nentries; i++) | |
2700 | { | |
2701 | uentry current = utab->entries[i]; | |
2702 | sRef tref = uentry_getSref (current); | |
2703 | uentry old = usymtab_lookupAux (env, uentry_rawName (current)); | |
2704 | sRef oref = uentry_getSref (old); | |
2705 | ||
2706 | /* note that is current is in a nested branch, | |
2707 | it may create a "new" old entry. */ | |
2708 | ||
2709 | llassert (uentry_isValid (old)); | |
2710 | uentry_mergeState (old, current, exprNode_loc (expr), | |
2711 | FALSE, FALSE, TRUE, ANDCLAUSE); | |
2712 | ||
2713 | /* | |
2714 | ** if is it defined by the second clause, then it should be defined. | |
2715 | */ | |
2716 | ||
2717 | if (sRef_isAnyDefined (tref) | |
2718 | && (sRef_isAllocated (oref) || sRef_isStateUndefined (oref))) | |
2719 | { | |
2720 | sRef_setDefined (oref, g_currentloc); | |
2721 | } | |
2722 | } | |
2723 | ||
2724 | utab->guards = guardSet_levelUnionFree (utab->guards, | |
2725 | guardSet_invert (exprNode_getGuards (pred)), | |
2726 | utab->lexlevel); | |
2727 | utab->aliases = aliasTable_levelUnion (utab->aliases, otab->aliases, utab->lexlevel); | |
2728 | ||
2729 | usymtab_quietPlainExitScope (); | |
2730 | ||
2731 | } | |
2732 | ||
2733 | /* | |
2734 | ** Stack should be [ US_CBRANCH+ US_SWITCH ] | |
2735 | ** Only branches which do not return (except possibly the last branch) are included. | |
2736 | ** | |
2737 | ** Conditionally merge state from all CBRANCHes. | |
2738 | ** | |
2739 | ** If allpaths is TRUE, then all possible executions go through some switch | |
2740 | ** case, and the original scope is not merged. | |
2741 | */ | |
2742 | ||
2743 | void | |
2744 | usymtab_exitSwitch (/*@unused@*/ exprNode sw, bool allpaths) | |
2745 | /*@modifies utab@*/ | |
2746 | { | |
2747 | usymtab ttab = utab; | |
2748 | usymtab stab = ttab; | |
2749 | usymtab ltab = ttab; | |
2750 | bool lastMustReturn = usymtab_mustEscape (utab); | |
2751 | int i; | |
2752 | ||
2753 | ||
2754 | while (stab->kind == US_CBRANCH) | |
2755 | { | |
2756 | stab = stab->env; | |
2757 | llassert (stab != GLOBAL_ENV); | |
2758 | } | |
2759 | ||
2760 | while (stab->kind == US_NORMAL) | |
2761 | { | |
2762 | stab = stab->env; | |
2763 | llassert (stab != GLOBAL_ENV); | |
2764 | } | |
2765 | ||
2766 | llassert (stab->kind == US_SWITCH); | |
2767 | ||
2768 | /* go to the scope outside the switch (US_SWITCH is just a marker! */ | |
2769 | stab = stab->env; | |
2770 | llassert (stab != GLOBAL_ENV); | |
2771 | ||
2772 | ||
2773 | ttab = ttab->env; | |
2774 | llassert (usymtab_isDefined (ttab)); | |
2775 | ||
2776 | if (ttab->kind == US_CBRANCH) | |
2777 | { | |
2778 | /* was quietPlainExitScope --- but, can't free it yet! */ | |
2779 | utab = utab->env; | |
2780 | llassert (utab != GLOBAL_ENV); | |
2781 | ||
2782 | while (ttab->kind == US_CBRANCH) | |
2783 | { | |
2784 | /* | |
2785 | ** (from popTrueBranch) | |
2786 | */ | |
2787 | ||
2788 | bool mustReturn = usymtab_mustEscape (ttab); | |
2789 | bool mustBreak = usymtab_mustBreak (ttab); | |
2790 | ||
2791 | usymtab_entries (ttab, current) | |
2792 | { | |
2793 | uentry old = /*@-compmempass@*/ usymtab_lookupAux (ltab, uentry_rawName (current)); | |
2794 | /*@=compmempass@*/ | |
2795 | ||
2796 | /* | |
2797 | ** note that is this is in a nested branch, | |
2798 | ** it may create a "new" old entry. | |
2799 | */ | |
2800 | ||
2801 | if (uentry_isValid (old)) | |
2802 | { | |
2803 | if (lastMustReturn) | |
2804 | { | |
2805 | uentry_mergeUses (current, old); | |
2806 | uentry_setState (old, current); | |
2807 | } | |
2808 | else | |
2809 | { | |
2810 | uentry_mergeState (old, current, exprNode_loc (sw), | |
2811 | mustReturn, FALSE, TRUE, SWITCHCLAUSE); | |
2812 | } | |
2813 | } | |
2814 | else | |
2815 | { | |
2816 | ; | |
2817 | } | |
2818 | } end_usymtab_entries; | |
2819 | ||
2820 | /* | |
2821 | ** if entry is not in symbol table for this case, merge with pre-switch | |
2822 | ** table | |
2823 | */ | |
2824 | ||
2825 | if (!mustReturn && !mustBreak) | |
2826 | { | |
2827 | usymtab_entries (stab, current) | |
2828 | { | |
2829 | if (usymtab_getIndex (ttab, uentry_rawName (current)) == NOT_FOUND) | |
2830 | { | |
2831 | uentry old = /*@-compmempass@*/ | |
2832 | usymtab_lookupAux (ltab, uentry_rawName (current)); | |
2833 | /*@=compmempass@*/ | |
2834 | ||
2835 | llassert (uentry_isValid (old)); | |
2836 | uentry_mergeState (old, current, exprNode_loc (sw), | |
2837 | FALSE, FALSE, TRUE, SWITCHCLAUSE); | |
2838 | } | |
2839 | } end_usymtab_entries; | |
2840 | } | |
2841 | ||
2842 | ltab->env = ttab->env; | |
2843 | ttab = ltab->env; | |
2844 | ||
2845 | /* | |
2846 | ** Suprious error, becuase of environments. | |
2847 | */ | |
2848 | ||
2849 | /*@i1@*/ utab = ltab; | |
2850 | ||
2851 | lastMustReturn = FALSE; | |
2852 | /*@-branchstate@*/ | |
2853 | } | |
2854 | } | |
2855 | /*@=branchstate@*/ | |
2856 | ||
2857 | /* | |
2858 | ** now, there is one US_CBRANCH. Merge this with the stab. | |
2859 | */ | |
2860 | ||
2861 | ||
2862 | for (i = 0; i < ltab->nentries; i++) | |
2863 | { | |
2864 | uentry current = ltab->entries[i]; | |
2865 | uentry old = usymtab_lookupAux (stab, uentry_rawName (current)); | |
2866 | ||
2867 | /* note that is this is in a nested branch, | |
2868 | it may create a "new" old entry. */ | |
2869 | ||
2870 | ||
2871 | if (uentry_isValid (old)) | |
2872 | { | |
2873 | if (allpaths) | |
2874 | { | |
2875 | uentry_mergeUses (current, old); | |
2876 | uentry_setState (old, current); | |
2877 | } | |
2878 | else | |
2879 | { | |
2880 | uentry_mergeState (old, current, exprNode_loc (sw), | |
2881 | FALSE, FALSE, TRUE, SWITCHCLAUSE); | |
2882 | } | |
2883 | } | |
2884 | else | |
2885 | { | |
2886 | } | |
2887 | } | |
2888 | ||
2889 | /* | |
2890 | ** exit the switch | |
2891 | */ | |
2892 | ||
2893 | ||
2894 | /* | |
2895 | ** switch may or may not be followed by a new scope | |
2896 | */ | |
2897 | ||
2898 | if (utab->kind == US_SWITCH) | |
2899 | { | |
2900 | usymtab_quietPlainExitScope (); | |
2901 | } | |
2902 | else | |
2903 | { | |
2904 | usymtab_quietPlainExitScope (); | |
2905 | llassert (utab->kind == US_SWITCH); | |
2906 | usymtab_quietPlainExitScope (); | |
2907 | } | |
2908 | ||
2909 | } | |
2910 | ||
2911 | static void | |
2912 | updateNullState (sRef el, /*@notnull@*/ usymtab ttab, | |
2913 | /*@notnull@*/ usymtab ftab, bool trueGuard) | |
2914 | { | |
2915 | sRef base = sRef_getRootBase (el); | |
28bf4b0b | 2916 | int level = sRef_lexLevel (base); |
616915dd | 2917 | |
2918 | if (sRef_isCvar (base)) | |
2919 | { | |
2920 | usymId index = sRef_getScopeIndex (base); | |
2921 | uentry ue = usymtab_getRefTab (ttab, level, index); | |
2922 | ||
2923 | if (!uentry_isLset (ue)) | |
2924 | { | |
2925 | sRef sr = uentry_getSref (ue); | |
2926 | ||
2927 | if (trueGuard) | |
2928 | { | |
2929 | sRef_setDerivNullState (sr, el, NS_NOTNULL); | |
2930 | } | |
2931 | else | |
2932 | { | |
2933 | if (!guardSet_isGuarded (ttab->guards, el) | |
2934 | && !sRef_isNotNull (sr)) | |
2935 | { | |
393e573f | 2936 | DPRINTF (("Here! %s / %s", |
2937 | sRef_unparseFull (sr), | |
2938 | sRef_unparseFull (el))); | |
616915dd | 2939 | sRef_setDerivNullState (sr, el, NS_DEFNULL); |
393e573f | 2940 | } |
616915dd | 2941 | } |
2942 | } | |
2943 | else | |
2944 | { | |
393e573f | 2945 | ; |
2946 | } | |
616915dd | 2947 | |
2948 | ue = usymtab_getRefTab (ftab, level, index); | |
2949 | ||
2950 | if (!uentry_isLset (ue)) | |
2951 | { | |
2952 | sRef sr = uentry_getSref (ue); | |
2953 | ||
616915dd | 2954 | if (!trueGuard) /* yikes! forgot the ! */ |
2955 | { | |
2956 | sRef_setDerivNullState (sr, el, NS_NOTNULL); | |
2957 | } | |
2958 | else | |
2959 | { | |
2960 | ||
2961 | if (!guardSet_isGuarded (ftab->guards, el) | |
2962 | && !sRef_isNotNull (sr)) | |
2963 | { | |
2964 | sRef_setDerivNullState (sr, el, NS_DEFNULL); | |
393e573f | 2965 | } |
616915dd | 2966 | } |
2967 | } | |
2968 | else | |
2969 | { | |
28bf4b0b | 2970 | ; |
2971 | } | |
2972 | } | |
2973 | } | |
616915dd | 2974 | |
2975 | void | |
2976 | usymtab_popBranches (exprNode pred, exprNode tbranch, exprNode fbranch, | |
2977 | bool isOpt, clause cl) | |
2978 | /*@modifies utab@*/ | |
2979 | { | |
2980 | int i = 0; | |
2981 | usymtab ftab = utab; | |
2982 | usymtab ttab = utab->env; | |
2983 | ||
2984 | fileloc loc; | |
2985 | usymtab env; | |
2986 | guardSet guards = exprNode_getGuards (pred); | |
2987 | sRefSet tguards = guardSet_getTrueGuards (guards); | |
2988 | sRefSet fguards = guardSet_getFalseGuards (guards); | |
2989 | bool mustReturnT = exprNode_mustEscape (tbranch); | |
2990 | bool mustReturnF = exprNode_mustEscape (fbranch); | |
28bf4b0b | 2991 | |
2992 | DPRINTF (("Pop branches: %s [mustreturn: %s/%s]", exprNode_unparse (pred), | |
2993 | bool_unparse (mustReturnT), | |
2994 | bool_unparse (mustReturnF))); | |
2995 | ||
616915dd | 2996 | if (exprNode_isDefined (fbranch)) |
2997 | { | |
2998 | loc = exprNode_loc (fbranch); | |
2999 | } | |
3000 | else | |
3001 | { | |
3002 | loc = exprNode_loc (tbranch); | |
3003 | } | |
3004 | ||
3005 | llassert (usymtab_isDefined (ttab)); | |
3006 | ||
3007 | env = ttab->env; | |
3008 | ||
3009 | llassert (usymtab_isDefined (env)); | |
3010 | llassert (ftab->kind == US_FBRANCH); | |
3011 | llassert (ttab->kind == US_TBRANCH); | |
3012 | ||
3013 | /* | |
3014 | ** For each element that is true guarded (i.e., if (x != NULL)) | |
3015 | ** make x = null in false branch, | |
3016 | ** and x = notnull in true branch. | |
3017 | ** unless x was set locally in that branch. | |
3018 | ** For each element that is false guarded (x == NULL) | |
3019 | ** make x = null in true, notnull in false. | |
3020 | ** | |
3021 | ** For each element that is either guarded (pred(x)) | |
3022 | ** | |
3023 | */ | |
3024 | ||
3025 | sRefSet_allElements (tguards, el) | |
3026 | { | |
3027 | updateNullState (el, ttab, ftab, TRUE); | |
3028 | } end_sRefSet_allElements; | |
3029 | ||
3030 | sRefSet_allElements (fguards, el) | |
3031 | { | |
3032 | updateNullState (el, ttab, ftab, FALSE); | |
3033 | } end_sRefSet_allElements; | |
3034 | ||
3035 | /* | |
3036 | ** | |
3037 | ** if an entry is in both true and false, merge the entries, | |
3038 | ** then replace original with new state. | |
3039 | ** | |
3040 | ** if an entry is in one table, merge it with the original. | |
3041 | */ | |
28bf4b0b | 3042 | |
3043 | DPRINTF (("ftab: %d", ftab->nentries)); | |
3044 | ||
616915dd | 3045 | for (i = 0; i < ftab->nentries; i++) |
3046 | { | |
3047 | uentry fthis = ftab->entries[i]; | |
3048 | uentry old = usymtab_lookupAux (env, uentry_rawName (fthis)); | |
3049 | int tindex = usymtab_getIndex (ttab, uentry_rawName (fthis)); | |
3050 | ||
28bf4b0b | 3051 | DPRINTF (("Entry: %s / %s", uentry_unparseFull (fthis), uentry_unparseFull (old))); |
3052 | ||
616915dd | 3053 | if (uentry_isUndefined (old)) |
3054 | { | |
3055 | /* possible entry was added as an undefined id */ | |
28bf4b0b | 3056 | DPRINTF (("Undefined! %s", uentry_rawName (fthis))); |
616915dd | 3057 | continue; |
3058 | } | |
3059 | ||
3060 | if (tindex != NOT_FOUND) | |
3061 | { | |
3062 | uentry tthis = ttab->entries[tindex]; | |
28bf4b0b | 3063 | |
616915dd | 3064 | /* note that is this is in a nested branch, |
3065 | it may create a "new" old entry. */ | |
3066 | ||
3067 | if (!mustReturnF) | |
3068 | { | |
3069 | if (!mustReturnT) | |
3070 | { | |
616915dd | 3071 | uentry_mergeState (fthis, tthis, loc, |
3072 | mustReturnT, FALSE, FALSE, cl); | |
3073 | } | |
3074 | else | |
3075 | { | |
3076 | uentry_mergeUses (fthis, tthis); | |
3077 | } | |
3078 | ||
3079 | uentry_setState (old, fthis); | |
3080 | ||
3081 | /*@-mustfree@*/ | |
3082 | } | |
3083 | /*@=mustfree@*/ | |
3084 | else | |
3085 | { | |
3086 | uentry_setState (old, tthis); | |
3087 | uentry_mergeState (old, fthis, loc, mustReturnF, | |
3088 | TRUE, FALSE, cl); | |
3089 | } | |
3090 | ||
3091 | ttab->entries[tindex] = uentry_undefined; | |
3092 | uentry_free (tthis); | |
3093 | } | |
3094 | else | |
3095 | { | |
3096 | uentry_mergeState (old, fthis, loc, mustReturnF, TRUE, FALSE, cl); | |
3097 | } | |
3098 | } | |
3099 | ||
3100 | for (i = 0; i < ttab->nentries; i++) | |
3101 | { | |
3102 | uentry current = ttab->entries[i]; | |
3103 | ||
28bf4b0b | 3104 | DPRINTF (("ttab: %s", uentry_unparseFull (current))); |
3105 | ||
616915dd | 3106 | if (!uentry_isUndefined (current)) |
3107 | { | |
3108 | uentry old = usymtab_lookupAux (env, uentry_rawName (current)); | |
3109 | ||
28bf4b0b | 3110 | DPRINTF (("Old: %s", uentry_unparseFull (old))); |
3111 | ||
3112 | if (uentry_isUndefined (old)) | |
3113 | { | |
3114 | llcontbug (message ("Undefined entry: %s", uentry_rawName (current))); | |
3115 | continue; | |
3116 | } | |
3117 | ||
616915dd | 3118 | if (mustReturnF) |
3119 | { | |
3120 | uentry_mergeUses (current, old); | |
3121 | uentry_setState (old, current); | |
3122 | } | |
3123 | else | |
3124 | { | |
3125 | /* | |
28bf4b0b | 3126 | ** Assumes false branch is a fall-through if |
616915dd | 3127 | ** fbranch is not defined. This is true, unless |
3128 | ** where was some greivous error in processing | |
3129 | ** the else branch of an if-then, in which case | |
3130 | ** this is probably the right thing to do anyway. | |
3131 | */ | |
3132 | ||
3133 | uentry_mergeState (old, current, loc, mustReturnT, | |
3134 | FALSE, isOpt, cl); | |
3135 | } | |
28bf4b0b | 3136 | |
3137 | DPRINTF (("==> %s", uentry_unparseFull (old))); | |
616915dd | 3138 | } |
3139 | } | |
616915dd | 3140 | |
3141 | /* | |
3142 | ** Plain levelUnion doesn't work, since we need to use the sRef's in env->aliases | |
3143 | ** if they are present. | |
3144 | */ | |
3145 | ||
3146 | llassert (NOALIAS (env->aliases, ttab->aliases)); | |
3147 | llassert (NOALIAS (env->aliases, ftab->aliases)); | |
3148 | ||
3149 | aliasTable_free (env->aliases); | |
3150 | ||
3151 | env->aliases = aliasTable_levelUnionNew (ttab->aliases, | |
3152 | ftab->aliases, env->lexlevel); | |
3153 | ||
3154 | aliasTable_fixSrefs (env->aliases); | |
28bf4b0b | 3155 | |
3156 | DPRINTF (("Aliases: %s", aliasTable_unparse (env->aliases))); | |
616915dd | 3157 | |
3158 | /* exit true and false scopes */ | |
3159 | usymtab_quietPlainExitScope (); | |
3160 | usymtab_quietPlainExitScope (); | |
3161 | ||
3162 | if (mustReturnT) | |
3163 | { | |
3164 | utab->guards = guardSet_levelUnionFree | |
3165 | (utab->guards, | |
3166 | guardSet_invert (exprNode_getGuards (pred)), | |
3167 | utab->lexlevel); | |
3168 | } | |
3169 | ||
3170 | if (mustReturnF) | |
3171 | { | |
3172 | utab->guards = guardSet_levelUnion (utab->guards, | |
3173 | exprNode_getGuards (pred), | |
3174 | utab->lexlevel); | |
3175 | } | |
3176 | ||
3177 | DPRINTF (("Here.")); | |
3178 | } | |
3179 | ||
3180 | static void usymtab_fixCases (void) /*@modifies utab@*/ { | |
3181 | while (utab->kind == US_CBRANCH) | |
3182 | { | |
3183 | usymtab_quietPlainExitScope (); | |
3184 | } | |
3185 | ||
3186 | llassert (utab->kind != US_CBRANCH); | |
3187 | } | |
3188 | ||
3189 | void | |
3190 | usymtab_altBranch (/*@only@*/ guardSet guards) | |
3191 | /*@modifies utab@*/ | |
3192 | { | |
28bf4b0b | 3193 | usymtab t; |
616915dd | 3194 | usymtab parent = utab->env; |
3195 | ||
28bf4b0b | 3196 | t = usymtab_create (US_FBRANCH, utab, FALSE); |
3197 | ||
616915dd | 3198 | /* |
3199 | ** If we are in a case, need to close it. The C syntax | |
3200 | ** is very liberal, so this kludge is necessary. | |
3201 | */ | |
3202 | ||
3203 | usymtab_fixCases (); | |
3204 | ||
3205 | DPRINTF (("Current kind: %s", usymtab_unparseStack ())); | |
28bf4b0b | 3206 | |
616915dd | 3207 | llassert (utab->kind == US_TBRANCH); |
3208 | llassert (parent != GLOBAL_ENV); | |
28bf4b0b | 3209 | |
616915dd | 3210 | guardSet_free (t->guards); |
3211 | t->guards = guards; | |
28bf4b0b | 3212 | |
616915dd | 3213 | aliasTable_free (t->aliases); |
3214 | t->aliases = aliasTable_copy (parent->aliases); | |
28bf4b0b | 3215 | |
616915dd | 3216 | utab = t; |
3217 | } | |
3218 | ||
3219 | void | |
3220 | usymtab_allDefined (void) | |
3221 | /*@globals utab, globtab@*/ | |
3222 | { | |
3223 | int i; | |
3224 | ||
3225 | llassert (utab == globtab); | |
3226 | ||
3227 | for (i = 0; i < utab->nentries; i++) | |
3228 | { | |
3229 | uentry e = utab->entries[i]; | |
3230 | ||
3231 | if (uentry_isPriv (e)) | |
3232 | { | |
3233 | ; /* no need to define it */ | |
3234 | } | |
3235 | else | |
3236 | { | |
3237 | if (context_getFlag (FLG_SPECUNDECL)) | |
3238 | { | |
3239 | fileloc sloc = uentry_whereSpecified (e); | |
3240 | fileloc dloc = uentry_whereDeclared (e); | |
3241 | ||
3242 | if (fileloc_isDefined (sloc) | |
3243 | && !uentry_isFakeTag (e) | |
3244 | && !fileloc_isDefined (dloc)) | |
3245 | { | |
3246 | voptgenerror | |
3247 | (FLG_SPECUNDECL, | |
3248 | message ("%s %q specified but not declared", | |
3249 | ekind_capName (uentry_getKind (e)), | |
3250 | uentry_getName (e)), | |
3251 | sloc); | |
3252 | } | |
3253 | } | |
3254 | ||
3255 | if (!uentry_isCodeDefined (e)) | |
3256 | { | |
3257 | fileloc dloc = uentry_whereDeclared (e); | |
3258 | ||
28bf4b0b | 3259 | if (fileloc_isLib (dloc) || fileloc_isXHFile (dloc)) |
616915dd | 3260 | { |
3261 | ; | |
3262 | } | |
3263 | else if (fileloc_isDefined (dloc)) | |
3264 | { | |
3265 | if (!uentry_isAnyTag (e)) | |
3266 | { | |
3267 | if (fileloc_isUser (dloc)) | |
3268 | { | |
3269 | voptgenerror | |
3270 | (FLG_DECLUNDEF, | |
3271 | message ("%s %q declared but not defined", | |
3272 | ekind_capName (uentry_getKind (e)), | |
3273 | uentry_getName (e)), | |
3274 | dloc); | |
efd360a3 | 3275 | DPRINTF (("decl: %s", uentry_unparseFull (e))); |
616915dd | 3276 | } |
3277 | } | |
3278 | } | |
3279 | else | |
3280 | { | |
3281 | fileloc sloc = uentry_whereSpecified (e); | |
3282 | ||
3283 | if (fileloc_isDefined (sloc) | |
3284 | && !fileloc_isImport (sloc) | |
3285 | && !fileloc_isLib (sloc) | |
3286 | && !fileloc_isPreproc (sloc) | |
3287 | && !uentry_isFakeTag (e)) | |
3288 | { | |
3289 | if (uentry_isVariable (e) || uentry_isFunction (e)) | |
3290 | { | |
3291 | voptgenerror | |
3292 | (FLG_SPECUNDEF, | |
3293 | message ("%s %q specified but not declared or defined", | |
3294 | ekind_capName (uentry_getKind (e)), | |
3295 | uentry_getName (e)), | |
3296 | sloc); | |
3297 | } | |
3298 | else | |
3299 | { | |
3300 | voptgenerror | |
3301 | (FLG_SPECUNDEF, | |
3302 | message ("%s %q specified but not defined", | |
3303 | ekind_capName (uentry_getKind (e)), | |
3304 | uentry_getName (e)), | |
3305 | sloc); | |
3306 | } | |
3307 | } | |
3308 | } | |
3309 | } | |
3310 | } | |
3311 | } | |
3312 | } | |
3313 | ||
3314 | void usymtab_exportHeader (void) | |
3315 | /*@globals utab@*/ | |
3316 | { | |
3317 | int i; | |
3318 | ||
3319 | for (i = 0; i < utab->nentries; i++) | |
3320 | { | |
3321 | uentry ce = utab->entries[i]; | |
3322 | ||
3323 | if (!uentry_isDatatype (ce) | |
3324 | && !uentry_isAnyTag (ce) | |
3325 | && !uentry_isEitherConstant (ce) && !uentry_isStatic (ce) | |
3326 | && !uentry_isExternal (ce) | |
3327 | && !uentry_isForward (ce)) | |
3328 | { | |
3329 | fileloc fwhere = uentry_whereDeclared (ce); | |
3330 | ||
3331 | if (fileloc_isUndefined (fwhere) | |
3332 | && uentry_isFunction (ce)) | |
3333 | { | |
3334 | fwhere = uentry_whereDefined (ce); | |
3335 | } | |
3336 | ||
3337 | if (fileloc_isDefined (fwhere) | |
3338 | && !fileloc_isHeader (fwhere) | |
28bf4b0b | 3339 | && !fileloc_isXHFile (fwhere) |
616915dd | 3340 | && !(fileloc_isSpecialFile (fwhere) |
3341 | && !context_getFlag (FLG_UNUSEDSPECIAL))) | |
3342 | { | |
3343 | if (uentry_isVariable (ce)) | |
3344 | { | |
3345 | if (optgenerror | |
3346 | (FLG_EXPORTHEADERVAR, | |
3347 | message ("%s %q exported but not declared in header file", | |
3348 | ekind_capName (uentry_getKind (ce)), | |
3349 | uentry_getName (ce)), | |
3350 | fwhere)) | |
3351 | { | |
3352 | uentry_showDefSpecInfo (ce, fwhere); | |
3353 | } | |
3354 | } | |
3355 | else | |
3356 | { | |
3357 | if (!uentry_isIter (ce) | |
3358 | && !uentry_isEndIter (ce) | |
3359 | && !uentry_isExpandedMacro (ce)) | |
3360 | { | |
3361 | if (uentry_isFunction (ce) | |
3362 | && cstring_equalLit (uentry_rawName (ce), "main")) | |
3363 | { | |
3364 | ; /* no error for main */ | |
3365 | } | |
3366 | else | |
3367 | { | |
3368 | if (optgenerror | |
3369 | (FLG_EXPORTHEADER, | |
3370 | message ("%s %q exported but not declared " | |
3371 | "in header file", | |
3372 | ekind_capName (uentry_getKind (ce)), | |
3373 | uentry_getName (ce)), | |
3374 | fwhere)) | |
3375 | { | |
3376 | uentry_showDefSpecInfo (ce, fwhere); | |
3377 | } | |
3378 | } | |
3379 | } | |
3380 | } | |
3381 | } | |
3382 | } | |
3383 | } | |
3384 | } | |
3385 | ||
3386 | void usymtab_exportLocal (void) | |
3387 | /*@globals utab@*/ | |
3388 | { | |
3389 | int i; | |
616915dd | 3390 | |
3391 | for (i = 0; i < utab->nentries; i++) | |
3392 | { | |
3393 | uentry ce = utab->entries[i]; | |
616915dd | 3394 | |
3395 | if (!uentry_isDatatype (ce) && !uentry_isAnyTag (ce) | |
3396 | && !uentry_isEitherConstant (ce) | |
3397 | && !uentry_isIter (ce) | |
3398 | && !uentry_isEndIter (ce) | |
3399 | && !uentry_isExpandedMacro (ce) | |
3400 | && uentry_isUsed (ce)) | |
3401 | { | |
3402 | /* check static uses */ | |
3403 | filelocList fuses = uentry_getUses (ce); | |
3404 | fileloc mod = uentry_whereDefined (ce); | |
3405 | bool ok = filelocList_isEmpty (fuses); | |
3406 | fileloc fwhere = uentry_whereDeclared (ce); | |
3407 | ||
3408 | if (fileloc_isSpecialFile (fwhere) | |
3409 | && !context_getFlag (FLG_UNUSEDSPECIAL)) | |
3410 | { | |
3411 | ok = TRUE; /* no errors for special files */ | |
3412 | } | |
3413 | else | |
3414 | { | |
3415 | filelocList_elements (fuses, uloc) | |
3416 | { | |
3417 | if (fileloc_isUndefined (uloc) || !fileloc_sameModule (uloc, mod)) | |
3418 | { | |
3419 | ok = TRUE; | |
3420 | /*@innerbreak@*/ break; | |
3421 | } | |
3422 | } end_filelocList_elements; | |
3423 | } | |
3424 | ||
3425 | if (!ok) | |
3426 | { | |
3427 | if (optgenerror | |
3428 | (FLG_EXPORTLOCAL, | |
3429 | message ("%s exported but not used outside %s: %q", | |
3430 | ekind_capName (uentry_getKind (ce)), | |
3431 | fileloc_getBase (mod), | |
3432 | uentry_getName (ce)), | |
3433 | fwhere)) | |
3434 | { | |
3435 | uentry_showDefSpecInfo (ce, fwhere); | |
3436 | } | |
3437 | } | |
3438 | } | |
3439 | } | |
3440 | } | |
3441 | ||
3442 | void | |
3443 | usymtab_allUsed (void) | |
3444 | /*@globals utab@*/ | |
3445 | { | |
3446 | int i; | |
3447 | bool isFileStatic = usymtab_inFileScope (); | |
3448 | cstring last_file = cstring_undefined; | |
3449 | ||
3450 | for (i = 0; i < utab->nentries; i++) | |
3451 | { | |
3452 | bool hasError = FALSE; | |
3453 | uentry ce = utab->entries[i]; | |
3454 | fileloc fwhere = uentry_whereDeclared (ce); | |
3455 | ||
3456 | if (fileloc_isUndefined (fwhere)) | |
3457 | { | |
3458 | fwhere = uentry_whereDefined (ce); | |
3459 | } | |
3460 | ||
3461 | if (fileloc_isInvalid (fwhere) | |
3462 | || fileloc_isLib (fwhere) | |
3463 | || fileloc_isBuiltin (fwhere) | |
3464 | || ((fileloc_isSpecialFile (fwhere) | |
3465 | || fileloc_isSpecialFile (uentry_whereDefined (ce))) | |
3466 | && !context_getFlag (FLG_UNUSEDSPECIAL))) | |
3467 | { | |
3468 | ; | |
3469 | } | |
3470 | else if (!uentry_wasUsed (ce) && !uentry_isAnyTag (ce)) | |
3471 | { | |
3472 | cstring fname = fileloc_filename (fwhere); | |
3473 | ||
3474 | if (cstring_isUndefined (last_file)) | |
3475 | { | |
3476 | last_file = fname; | |
3477 | } | |
3478 | else if (cstring_equal (fname, last_file)) | |
3479 | { | |
3480 | } | |
3481 | else | |
3482 | { | |
3483 | cleanupMessages (); | |
3484 | last_file = fname; | |
3485 | } | |
3486 | ||
3487 | if (uentry_isParam (ce)) | |
3488 | { | |
3489 | if (context_inMacro ()) | |
3490 | { | |
3491 | sRef cref = uentry_getSref (ce); | |
3492 | ||
3493 | if (uentry_isYield (ce)) | |
3494 | { | |
3495 | ; /* no checks (for now) */ | |
3496 | } | |
3497 | else if (sRef_isSafe (cref)) | |
3498 | { | |
3499 | ; /* no error */ | |
3500 | } | |
3501 | else | |
3502 | { | |
3503 | if (uentry_hasRealName (ce)) | |
3504 | { | |
3505 | hasError = | |
3506 | optgenerror (FLG_MACROPARAMS, | |
3507 | message ("Macro parameter %q not used", | |
3508 | uentry_getName (ce)), | |
3509 | fwhere); | |
3510 | } | |
3511 | } | |
3512 | } | |
3513 | else | |
3514 | { | |
3515 | if (cstring_equalFree (uentry_getName (ce), | |
3516 | cstring_makeLiteral ("..."))) | |
3517 | { | |
3518 | ; | |
3519 | } | |
3520 | else | |
3521 | { | |
3522 | hasError = optgenerror (FLG_PARAMUNUSED, | |
3523 | message ("Parameter %q not used", | |
3524 | uentry_getName (ce)), | |
3525 | fwhere); | |
3526 | } | |
3527 | } | |
3528 | } /* isParam */ | |
3529 | else if (uentry_isFunction (ce) || uentry_isIter (ce)) | |
3530 | { | |
3531 | if (fileloc_isUser (fwhere)) | |
3532 | { | |
3533 | hasError = optgenerror | |
3534 | (FLG_FUNCUNUSED, | |
3535 | message ("%q %q declared but not used", | |
3536 | cstring_makeLiteral | |
3537 | (uentry_isIter (ce) ? "Iterator" | |
3538 | : (isFileStatic ? "File static function" : "Function")), | |
3539 | uentry_getName (ce)), | |
3540 | fwhere); | |
3541 | } | |
3542 | } | |
3543 | else if (uentry_isEndIter (ce)) | |
3544 | { | |
3545 | ; /* no error (already reported for iter */ | |
3546 | } | |
3547 | else if (uentry_isEnumConstant (ce)) | |
3548 | { | |
3549 | if (fileloc_isUser (fwhere)) | |
3550 | { | |
3551 | hasError = optgenerror | |
3552 | (FLG_ENUMMEMUNUSED, | |
3553 | message ("Enum member %q not used", | |
3554 | uentry_getName (ce)), | |
3555 | fwhere); | |
3556 | } | |
3557 | } | |
3558 | else if (uentry_isConstant (ce)) | |
3559 | { | |
3560 | if (fileloc_isUser (fwhere)) | |
3561 | { | |
3562 | hasError = optgenerror | |
3563 | (FLG_CONSTUNUSED, | |
3564 | message ("Constant %q declared but not used", | |
3565 | uentry_getName (ce)), | |
3566 | fwhere); | |
3567 | } | |
3568 | } | |
3569 | else if (uentry_isDatatype (ce)) | |
3570 | { | |
3571 | if (fileloc_isUser (fwhere)) | |
3572 | { | |
3573 | hasError = optgenerror | |
3574 | (FLG_TYPEUNUSED, | |
3575 | message ("Type %q declared but not used", | |
3576 | uentry_getName (ce)), | |
3577 | fwhere); | |
3578 | } | |
3579 | } | |
3580 | else if (!uentry_isRefParam (ce) && !uentry_isExpandedMacro (ce)) | |
3581 | { /* errors for ref params will be reported in the next scope */ | |
3582 | llassertprint (uentry_isVar (ce), | |
3583 | ("ce: %s", uentry_unparseFull (ce))); | |
3584 | ||
3585 | if (ctype_isFunction (uentry_getType (ce))) | |
3586 | { | |
3587 | if (fileloc_isUser (fwhere)) | |
3588 | { | |
3589 | hasError = optgenerror | |
3590 | (FLG_FUNCUNUSED, | |
3591 | message ("%q %q declared but not used", | |
3592 | cstring_makeLiteral | |
3593 | (isFileStatic ? "File static function" | |
3594 | : "Function"), | |
3595 | uentry_getName (ce)), | |
3596 | fwhere); | |
3597 | } | |
3598 | } | |
3599 | else | |
3600 | { | |
3601 | if (fileloc_isUser (fwhere)) | |
3602 | { | |
3603 | ||
3604 | ||
3605 | hasError = optgenerror | |
3606 | (FLG_VARUNUSED, | |
3607 | message ("%q %q declared but not used", | |
3608 | cstring_makeLiteral | |
3609 | (isFileStatic ? "File static variable" | |
3610 | : "Variable"), | |
3611 | uentry_getName (ce)), | |
3612 | fwhere); | |
3613 | } | |
3614 | } | |
3615 | } | |
3616 | else | |
3617 | { | |
3618 | ; /* no errors */ | |
3619 | } | |
3620 | } /* unused */ | |
28bf4b0b | 3621 | else if ((uentry_isDatatype (ce) || uentry_isAnyTag (ce))) |
616915dd | 3622 | { /* check all fields */ |
3623 | ctype ct = uentry_getRealType (ce); | |
3624 | ||
3625 | ||
3626 | while (ctype_isAP (ct)) | |
3627 | { | |
3628 | ct = ctype_getBaseType (ct); | |
3629 | } | |
3630 | ||
616915dd | 3631 | if (ctype_isSU (ct)) |
3632 | { | |
3633 | uentryList fields = ctype_getFields (ct); | |
3634 | ||
3635 | uentryList_elements (fields, field) | |
3636 | { | |
3637 | if (!uentry_isUsed (field)) | |
3638 | { | |
3639 | if (uentry_hasName (ce)) | |
3640 | { | |
3641 | hasError |= optgenerror | |
3642 | (FLG_FIELDUNUSED, | |
3643 | message ("Field %q of %s %q declared but not used", | |
3644 | uentry_getName (field), | |
3645 | cstring_makeLiteralTemp | |
3646 | (ctype_isStruct (ct) ? "structure" : "union"), | |
3647 | uentry_getName (ce)), | |
3648 | uentry_whereEarliest (field)); | |
3649 | } | |
3650 | else | |
3651 | { | |
28bf4b0b | 3652 | /* |
3653 | ** evans 2001-06-08 | |
3654 | ** Can't report these errors for unnamed structs. | |
3655 | ** No way to tell when there are multiple consistent | |
3656 | ** unnamed structure types. (Could go through table | |
3657 | ** and mark them all unused...) | |
3658 | ||
616915dd | 3659 | hasError |= optgenerror |
3660 | (FLG_FIELDUNUSED, | |
3661 | message ("Field %q of unnamed %s declared but not used", | |
3662 | uentry_getName (field), | |
3663 | cstring_makeLiteralTemp | |
3664 | (ctype_isStruct (ct) ? "structure" : "union")), | |
3665 | uentry_whereEarliest (field)); | |
28bf4b0b | 3666 | |
3667 | */ | |
616915dd | 3668 | } |
3669 | ||
3670 | uentry_setUsed (field, fileloc_undefined); | |
3671 | } | |
3672 | } end_uentryList_elements; | |
3673 | } | |
3674 | } | |
3675 | else | |
3676 | { | |
3677 | ; /* no errors */ | |
3678 | } | |
3679 | ||
3680 | if (hasError) | |
3681 | { | |
3682 | if (uentry_isParam (ce) && context_inMacro ()) | |
3683 | { | |
3684 | if (fileloc_isDefined (uentry_whereSpecified (ce))) | |
3685 | { | |
3686 | uentry_showWhereSpecified (ce); | |
3687 | } | |
3688 | } | |
3689 | else | |
3690 | { | |
3691 | uentry_showDefSpecInfo (ce, fwhere); | |
3692 | } | |
3693 | ||
3694 | uentry_setUsed (ce, fileloc_undefined); | |
3695 | } | |
3696 | } | |
3697 | } | |
3698 | ||
3699 | static void | |
3700 | checkGlobalReturn (uentry glob, sRef orig) | |
3701 | { | |
3702 | sRef sr = uentry_getSref (glob); | |
3703 | ||
b7b694d6 | 3704 | DPRINTF (("Check global return: %s / orig: %s / sr: %s", |
28bf4b0b | 3705 | uentry_unparseFull (glob), |
3706 | sRef_unparseFull (orig), | |
3707 | sRef_unparseFull (sr))); | |
3708 | ||
3709 | DPRINTF (("Is killed: %s", bool_unparse (sRef_isKilledGlob (orig)))); | |
3710 | ||
616915dd | 3711 | if (context_getFlag (FLG_GLOBSTATE)) |
3712 | { | |
28bf4b0b | 3713 | DPRINTF (("Is killed: %s", sRef_unparseFull (orig))); |
3714 | ||
616915dd | 3715 | if (sRef_isKilledGlob (orig)) |
3716 | { | |
3717 | if (sRef_isStateUndefined (sr) | |
3718 | || sRef_isUnuseable (sr) | |
3719 | || sRef_isStateUnknown (sr) | |
3720 | || sRef_isDead (sr)) | |
3721 | { | |
3722 | ; | |
3723 | } | |
3724 | else | |
3725 | { | |
3726 | ctype ct = ctype_realType (uentry_getType (glob)); | |
393e573f | 3727 | |
2e127cb8 | 3728 | DPRINTF (("Check global destroyed: %s", uentry_unparseFull (glob))); |
3729 | ||
616915dd | 3730 | if (ctype_isVisiblySharable (ct)) |
3731 | { | |
3732 | if (optgenerror | |
3733 | (FLG_GLOBSTATE, | |
3734 | message | |
28bf4b0b | 3735 | ("Killed global %q (type %s) not released before return", |
3736 | uentry_getName (glob), | |
3737 | ctype_unparse (ct)), | |
616915dd | 3738 | g_currentloc)) |
3739 | { | |
3740 | sRef_showStateInfo (sr); | |
28bf4b0b | 3741 | } |
616915dd | 3742 | } |
3743 | else | |
3744 | { | |
28bf4b0b | 3745 | sRef_protectDerivs (); |
2e127cb8 | 3746 | (void) transferChecks_globalDestroyed (sr, g_currentloc); |
616915dd | 3747 | sRef_clearProtectDerivs (); |
3748 | } | |
3749 | } | |
3750 | } | |
3751 | else | |
3752 | { | |
3753 | if (sRef_isStateUndefined (sr)) | |
3754 | { | |
3755 | if (optgenerror (FLG_GLOBSTATE, | |
3756 | message | |
3757 | ("Function returns with global %q undefined", | |
3758 | uentry_getName (glob)), | |
3759 | g_currentloc)) | |
3760 | { | |
3761 | sRef_showStateInfo (sr); | |
3762 | } | |
3763 | } | |
3764 | else | |
3765 | { | |
7ebcc5bb | 3766 | if (sRef_isDead (sr) || sRef_isKept (sr)) |
616915dd | 3767 | { |
3768 | if (optgenerror | |
3769 | (FLG_GLOBSTATE, | |
3770 | message ("Function returns with global %q " | |
7ebcc5bb | 3771 | "referencing %s storage", |
3772 | uentry_getName (glob), | |
3773 | cstring_makeLiteralTemp (sRef_isDead (sr) ? "released" : "kept")), | |
616915dd | 3774 | g_currentloc)) |
3775 | { | |
7ebcc5bb | 3776 | if (sRef_isKept (sr)) |
3777 | { | |
3778 | sRef_showAliasInfo (sr); | |
3779 | } | |
3780 | else | |
3781 | { | |
3782 | sRef_showStateInfo (sr); | |
3783 | } | |
3784 | ||
616915dd | 3785 | sRef_setDefState (sr, SS_UNKNOWN, fileloc_undefined); |
3786 | } | |
3787 | } | |
3788 | ||
28bf4b0b | 3789 | if (ctype_isRealPointer (uentry_getType (glob)) |
3790 | && sRef_possiblyNull (sr) | |
3791 | && !uentry_possiblyNull (glob)) | |
616915dd | 3792 | { |
3793 | if (optgenerror | |
3794 | (FLG_GLOBSTATE, | |
3795 | message ("Function returns with non-null global %q " | |
3796 | "referencing null storage", | |
3797 | uentry_getName (glob)), | |
3798 | g_currentloc)) | |
3799 | { | |
3800 | sRef_showNullInfo (sr); | |
3801 | } | |
3802 | } | |
3803 | else | |
3804 | { | |
393e573f | 3805 | DPRINTF (("Check transfer: %s", uentry_unparseFull (glob))); |
2e127cb8 | 3806 | transferChecks_globalReturn (glob); |
616915dd | 3807 | } |
3808 | } | |
3809 | } | |
3810 | } | |
3811 | } | |
3812 | ||
3813 | /* | |
3814 | ** remember: check alias globals | |
3815 | */ | |
3816 | ||
3817 | void usymtab_checkFinalScope (bool isReturn) | |
3818 | /*@globals utab@*/ | |
3819 | { | |
2e127cb8 | 3820 | bool mustFree = context_getFlag (FLG_MUSTFREEONLY) || context_getFlag (FLG_MUSTFREEFRESH); /*@i423 remove this mustFree */ |
616915dd | 3821 | bool mustDefine = context_getFlag (FLG_MUSTDEFINE); |
3822 | /* bool mustNotAlias = context_getFlag (FLG_MUSTNOTALIAS); */ | |
3823 | sRefSet checked = sRefSet_new (); | |
3824 | usymtab stab = utab; | |
3825 | int i; | |
3826 | ||
3827 | /* | |
3828 | ** need to check all scopes out to function parameters. | |
3829 | */ | |
3830 | ||
3831 | do | |
3832 | { | |
3833 | for (i = 0; i < stab->nentries; i++) | |
3834 | { | |
3835 | uentry ce = stab->entries[i]; | |
3836 | sRef sr = uentry_getSref (ce); | |
3837 | sRef rb = sRef_getRootBase (sr); | |
28bf4b0b | 3838 | valueTable tvalues; |
616915dd | 3839 | |
28bf4b0b | 3840 | /* |
3841 | ** Shouldn't check if shadow checked in deeper scope: | |
3842 | */ | |
3843 | ||
3844 | if (stab != utab) | |
3845 | { | |
3846 | uentry oue = usymtab_lookupQuietNoAlt (utab, uentry_observeRealName (ce)); | |
3847 | ||
3848 | if (!uentry_sameObject (ce, oue)) | |
3849 | { | |
3850 | DPRINTF (("Skipping outer entry: %s / %s", uentry_unparseFull (ce), | |
3851 | uentry_unparseFull (oue))); | |
3852 | /*@i32 what if it is one an alternate branch? */ | |
3853 | /*@innercontinue@*/ continue; | |
3854 | } | |
3855 | } | |
3e3ec469 | 3856 | |
28bf4b0b | 3857 | DPRINTF (("Here check final scope: %s", uentry_unparseFull (ce))); |
3858 | ||
616915dd | 3859 | if (ctype_isFunction (uentry_getType (ce))) |
3860 | { | |
3861 | /*@innercontinue@*/ continue; | |
3862 | } | |
3863 | ||
28bf4b0b | 3864 | if (uentry_isAnyParam (ce) |
3865 | || uentry_isRefParam (ce) | |
3866 | || sRef_isFileOrGlobalScope (rb)) | |
3867 | { | |
3868 | /* Don't do the loseref check...but should check state! */ | |
3e3ec469 | 3869 | DPRINTF (("Skipping check 1")); |
28bf4b0b | 3870 | } |
3871 | else if (sRef_isDefinitelyNull (sr) | |
3872 | || usymtab_isDefinitelyNull (sr)) | |
3873 | { | |
3874 | /* | |
3875 | ** No state reference errors for definitely null references. | |
3876 | */ | |
3e3ec469 | 3877 | |
3878 | DPRINTF (("Skipping check 2")); | |
28bf4b0b | 3879 | } |
3880 | else | |
3881 | { | |
3882 | DPRINTF (("Lose ref: %s / %s", uentry_unparse (ce), | |
3883 | sRef_unparseFull (sr))); | |
3884 | ||
3885 | tvalues = sRef_getValueTable (sr); | |
3886 | ||
3887 | valueTable_elements (tvalues, fkey, fval) { | |
3888 | metaStateInfo minfo; | |
3889 | cstring msg = cstring_undefined; | |
3890 | int nval; | |
3891 | ||
3892 | minfo = context_lookupMetaStateInfo (fkey); | |
3893 | llassert (metaStateInfo_isDefined (minfo)); | |
3894 | ||
15b3d2b2 | 3895 | if (stateValue_isError (fval) |
3896 | || sRef_isStateUndefined (sr)) /* No errors for undefined state */ | |
28bf4b0b | 3897 | { |
3e3ec469 | 3898 | DPRINTF (("Skipping check 3")); |
28bf4b0b | 3899 | } |
3900 | else | |
3901 | { | |
3902 | DPRINTF (("Check: %s / %s / %s", fkey, | |
3903 | metaStateInfo_unparse (minfo), | |
3904 | stateValue_unparse (fval))); | |
3905 | ||
3906 | minfo = context_lookupMetaStateInfo (fkey); | |
3907 | ||
3908 | nval = stateCombinationTable_lookupLoseReference | |
3909 | (metaStateInfo_getTransferTable (minfo), | |
3910 | stateValue_getValue (fval), &msg); | |
3911 | ||
3912 | if (cstring_isDefined (msg)) | |
3913 | { | |
3914 | /*@i32 print extra info for assignments@*/ | |
3915 | DPRINTF (("From: %s", sRef_unparseFull (sr))); | |
3916 | DPRINTF (("Null? %s / %s", | |
3917 | bool_unparse (sRef_isDefinitelyNull (sr)), | |
3918 | bool_unparse (usymtab_isGuarded (sr)))); | |
3919 | ||
3920 | if (optgenerror | |
3921 | (FLG_STATETRANSFER, | |
3922 | message | |
2c88d156 | 3923 | ("%s loses reference %q in invalid state %q (%s)", |
28bf4b0b | 3924 | cstring_makeLiteralTemp (isReturn ? "Return" : "Scope exit"), |
3925 | uentry_getName (ce), | |
2c88d156 | 3926 | stateValue_unparseValue (fval, minfo), |
28bf4b0b | 3927 | msg), |
3928 | g_currentloc)) | |
3929 | { | |
3930 | stateValue_show (fval, minfo); | |
3931 | } | |
3932 | else | |
3933 | { | |
3934 | DPRINTF (("Suppressed transfer error: %s", msg)); | |
3935 | } | |
3936 | } | |
3937 | } | |
3938 | } end_valueTable_elements; | |
3939 | } | |
3940 | ||
3e3ec469 | 3941 | DPRINTF (("Here 1")); |
3942 | ||
616915dd | 3943 | if (mustFree) |
3944 | { | |
3e3ec469 | 3945 | DPRINTF (("Check mustfree entry: %s", uentry_unparseFull (ce))); |
28bf4b0b | 3946 | |
3947 | if (!sRefSet_member (checked, sr) && !sRef_isFileOrGlobalScope (rb)) | |
616915dd | 3948 | { |
3949 | if (ctype_isRealSU (uentry_getType (ce)) | |
3950 | && !uentry_isAnyParam (ce) | |
3951 | && !uentry_isRefParam (ce) | |
3952 | && !uentry_isStatic (ce) | |
3953 | && !sRef_isDependent (sr) | |
3954 | && !sRef_isOwned (sr)) | |
3955 | { | |
3956 | sRefSet als = usymtab_allAliases (sr); | |
616915dd | 3957 | |
3958 | if (sRefSet_isEmpty (als)) | |
3959 | { | |
2e127cb8 | 3960 | transferChecks_localDestroyed (sr, g_currentloc); |
616915dd | 3961 | } |
3962 | else | |
3963 | { | |
3964 | /* aliased, no problem */ ; | |
3965 | } | |
3966 | ||
3967 | sRefSet_free (als); | |
3968 | } | |
3969 | else if | |
3970 | (!uentry_isStatic (ce) | |
3971 | && ((sRef_isNewRef (sr)) | |
3972 | || (((sRef_isOnly (sr) || sRef_isFresh (sr) | |
3973 | || sRef_isKeep (sr) || sRef_isOwned (sr)) | |
3974 | && !sRef_isDead (sr)) | |
3975 | && (!sRef_definitelyNull (sr)) | |
28bf4b0b | 3976 | && (!usymtab_isDefinitelyNull (sr))))) |
616915dd | 3977 | { |
3978 | bool hasError = TRUE; | |
3979 | ||
28bf4b0b | 3980 | DPRINTF (("Checking: %s", sRef_unparseFull (sr))); |
3981 | ||
616915dd | 3982 | /* |
3983 | ** If its a scope exit, check if there is an alias. | |
3984 | ** If so, make it only. If not, there is an error. | |
3985 | */ | |
3986 | ||
3987 | if (!isReturn) | |
3988 | { | |
2e127cb8 | 3989 | if (transferChecks_canLoseReference (sr, g_currentloc)) |
616915dd | 3990 | { |
28bf4b0b | 3991 | DPRINTF (("Can lose!")); |
616915dd | 3992 | hasError = FALSE; |
3993 | } | |
3994 | } | |
3995 | ||
3996 | if (hasError) | |
3997 | { | |
3998 | if (sRef_hasLastReference (sr)) | |
3999 | { | |
4000 | sRef ar = sRef_getAliasInfoRef (sr); | |
4001 | ||
4002 | if (optgenerror | |
2e127cb8 | 4003 | (sRef_isFresh (ar) ? FLG_MUSTFREEFRESH : FLG_MUSTFREEONLY, |
616915dd | 4004 | message |
4005 | ("Last reference %q to %s storage %qnot %q before %q", | |
4006 | sRef_unparse (sr), | |
4007 | alkind_unparse (sRef_getAliasKind (sr)), | |
4008 | sRef_unparseOpt (ar), | |
4009 | cstring_makeLiteral (sRef_isKeep (sr) | |
4010 | ? "transferred" : "released"), | |
4011 | cstring_makeLiteral (isReturn | |
4012 | ? "return" : "scope exit")), | |
4013 | g_currentloc)) | |
4014 | { | |
4015 | sRef_showRefLost (sr); | |
4016 | } | |
4017 | } | |
4018 | else if (sRef_isNewRef (sr)) | |
4019 | { | |
4020 | if (optgenerror | |
2e127cb8 | 4021 | (sRef_isFresh (sr) ? FLG_MUSTFREEFRESH : FLG_MUSTFREEONLY, |
616915dd | 4022 | message |
4023 | ("%q %q not released before %q", | |
4024 | cstring_makeLiteral | |
4025 | (alkind_isKillRef (sRef_getOrigAliasKind (sr)) | |
4026 | ? "Kill reference parameter" : "New reference"), | |
4027 | uentry_getName (ce), | |
4028 | cstring_makeLiteral (isReturn | |
4029 | ? "return" : "scope exit")), | |
4030 | g_currentloc)) | |
4031 | { | |
4032 | sRef_showAliasInfo (sr); | |
4033 | } | |
4034 | } | |
4035 | else | |
4036 | { | |
4037 | if (ctype_isRealSU (sRef_getType (sr))) | |
4038 | { | |
2e127cb8 | 4039 | transferChecks_structDestroyed (sr, g_currentloc); |
616915dd | 4040 | } |
4041 | else | |
4042 | { | |
28bf4b0b | 4043 | DPRINTF (("Here we are: %s", sRef_unparseFull (sr))); |
4044 | ||
616915dd | 4045 | if (optgenerror |
2e127cb8 | 4046 | (sRef_isFresh (sr) ? FLG_MUSTFREEFRESH : FLG_MUSTFREEONLY, |
616915dd | 4047 | message |
4048 | ("%s storage %q not %q before %q", | |
4049 | alkind_capName (sRef_getAliasKind (sr)), | |
4050 | uentry_getName (ce), | |
4051 | cstring_makeLiteral (sRef_isKeep (sr) | |
4052 | ? "transferred" : "released"), | |
4053 | cstring_makeLiteral (isReturn | |
4054 | ? "return" : "scope exit")), | |
4055 | g_currentloc)) | |
4056 | { | |
4057 | sRef_showAliasInfo (sr); | |
28bf4b0b | 4058 | DPRINTF (("Storage: %s", sRef_unparseFull (sr))); |
616915dd | 4059 | } |
4060 | } | |
4061 | } | |
4062 | } | |
4063 | } | |
4064 | else | |
4065 | { | |
4066 | ; | |
4067 | } | |
4068 | } | |
3e3ec469 | 4069 | } |
4070 | ||
a956d444 | 4071 | if (mustDefine && uentry_isOut (ce)) |
3e3ec469 | 4072 | { |
a956d444 | 4073 | /* No error if its dead (either only or error already reported */ |
4074 | if (!sRef_isReallyDefined (sr) && !sRef_isDead (sr)) | |
616915dd | 4075 | { |
3e3ec469 | 4076 | voptgenerror |
4077 | (FLG_MUSTDEFINE, | |
4078 | message ("Out storage %q not defined before %q", | |
4079 | uentry_getName (ce), | |
4080 | cstring_makeLiteral | |
4081 | (isReturn ? "return" : "scope exit")), | |
4082 | g_currentloc); | |
2e127cb8 | 4083 | |
4084 | DPRINTF (("sr: %s", sRef_unparseFull (sr))); | |
616915dd | 4085 | } |
3e3ec469 | 4086 | } |
4087 | ||
4088 | /* | |
4089 | ** also check state is okay | |
4090 | */ | |
4091 | ||
4092 | if (usymtab_lexicalLevel () > functionScope | |
4093 | && uentry_isVariable (ce) | |
4094 | && (sRef_isLocalVar (sr) | |
4095 | && (sRef_isDependent (sr) || sRef_isLocalState (sr)))) | |
4096 | { | |
4097 | sRefSet ab = usymtab_aliasedBy (sr); | |
616915dd | 4098 | |
3e3ec469 | 4099 | /* should do something more efficient here */ |
28bf4b0b | 4100 | |
3e3ec469 | 4101 | if (sRefSet_isEmpty (ab)) |
616915dd | 4102 | { |
3e3ec469 | 4103 | /* and no local ref */ |
4104 | DPRINTF (("Check lose ref: %s", uentry_unparseFull (ce))); | |
2e127cb8 | 4105 | transferChecks_loseReference (ce); |
616915dd | 4106 | } |
3e3ec469 | 4107 | else |
616915dd | 4108 | { |
4109 | ; | |
4110 | } | |
4111 | ||
3e3ec469 | 4112 | sRefSet_free (ab); |
616915dd | 4113 | } |
3e3ec469 | 4114 | else |
4115 | { | |
4116 | ; | |
4117 | } | |
4118 | ||
4119 | checked = sRefSet_insert (checked, sr); | |
616915dd | 4120 | } |
28bf4b0b | 4121 | |
616915dd | 4122 | llassert (usymtab_isDefined (stab->env)); |
4123 | ||
4124 | if (usymtab_isBranch (stab)) | |
4125 | { | |
4126 | stab = usymtab_dropEnv (stab); | |
4127 | } | |
4128 | else | |
4129 | { | |
4130 | stab = stab->env; | |
4131 | } | |
28bf4b0b | 4132 | |
616915dd | 4133 | llassert (stab != usymtab_undefined); |
4134 | } while (isReturn && (stab->lexlevel >= paramsScope)); | |
28bf4b0b | 4135 | |
4136 | sRefSet_free (checked); | |
4137 | ||
616915dd | 4138 | /* |
4139 | ** for returns: | |
4140 | ** all globals are appropriately defined | |
4141 | ** all parameters are appropriately defined | |
4142 | ** special clauses are followed | |
4143 | */ | |
4144 | ||
4145 | if (isReturn || (utab->lexlevel == paramsScope)) | |
4146 | { | |
4147 | uentry fcn = context_getHeader (); | |
4148 | uentryList params = context_getParams (); | |
4149 | globSet uglobs = context_getUsedGlobs (); | |
4150 | globSet sglobs = context_getGlobs (); | |
616915dd | 4151 | |
4152 | if (isReturn && context_maybeSet (FLG_GLOBALIAS)) | |
4153 | { | |
4154 | aliasTable_checkGlobs (utab->aliases); | |
4155 | } | |
4156 | ||
4157 | /* | |
28bf4b0b | 4158 | ** state clauses (ensures, defines, sets, allocates, releases) |
616915dd | 4159 | */ |
28bf4b0b | 4160 | |
4161 | if (uentry_hasStateClauseList (fcn)) | |
616915dd | 4162 | { |
28bf4b0b | 4163 | stateClauseList clauses = uentry_getStateClauseList (fcn); |
616915dd | 4164 | |
28bf4b0b | 4165 | stateClauseList_elements (clauses, cl) |
616915dd | 4166 | { |
28bf4b0b | 4167 | if (stateClause_isAfter (cl) && !stateClause_isGlobal (cl)) |
4168 | { | |
4169 | if (stateClause_setsMetaState (cl)) | |
616915dd | 4170 | { |
28bf4b0b | 4171 | sRefSet rfs = stateClause_getRefs (cl); |
4172 | qual q = stateClause_getMetaQual (cl); | |
4173 | annotationInfo ainfo = qual_getAnnotationInfo (q); | |
4174 | metaStateInfo minfo = annotationInfo_getState (ainfo); | |
4175 | cstring key = metaStateInfo_getName (minfo); | |
4176 | int mvalue = annotationInfo_getValue (ainfo); | |
4177 | ||
4178 | DPRINTF (("Post meta state clause: %s", stateClause_unparse (cl))); | |
4179 | ||
4180 | sRefSet_elements (rfs, el) | |
616915dd | 4181 | { |
28bf4b0b | 4182 | sRef base = sRef_getRootBase (el); |
616915dd | 4183 | |
28bf4b0b | 4184 | if (sRef_isResult (base)) |
4185 | { | |
4186 | /* | |
4187 | ** This is checked for return transfers. | |
4188 | */ | |
4189 | ; | |
4190 | } | |
4191 | else if (sRef_isParam (base) || sRef_isGlobalMarker (base)) | |
616915dd | 4192 | { |
28bf4b0b | 4193 | sRef sr = sRef_updateSref (base); |
4194 | sr = sRef_fixBase (el, sr); | |
4195 | ||
4196 | if (!sRef_checkMetaStateValue (sr, key, mvalue)) | |
616915dd | 4197 | { |
28bf4b0b | 4198 | if (optgenerror |
4199 | (FLG_STATETRANSFER, | |
4200 | message | |
2c88d156 | 4201 | ("Ensures clause not satisfied%q (state is %q): %q", |
28bf4b0b | 4202 | sRef_isGlobalMarker (sr) |
4203 | ? message ("") | |
4204 | : message (" by %q", sRef_unparse (sr)), | |
4205 | stateValue_unparseValue (sRef_getMetaStateValue (sr, key), | |
4206 | minfo), | |
4207 | stateClause_unparse (cl)), | |
4208 | g_currentloc)) | |
616915dd | 4209 | { |
28bf4b0b | 4210 | sRef_showMetaStateInfo (sr, key); |
4211 | } | |
4212 | } | |
616915dd | 4213 | } |
28bf4b0b | 4214 | else |
4215 | { | |
4216 | if (sRef_isMeaningful (el)) | |
4217 | { | |
4218 | BADBRANCH; | |
4219 | } | |
4220 | } | |
4221 | } end_sRefSet_elements ; | |
4222 | } | |
4223 | else | |
4224 | { | |
4225 | /* evs - 2000 07 10 - added this */ | |
4226 | sRefTest tst = stateClause_getPostTestFunction (cl); | |
4227 | sRefSet rfs = stateClause_getRefs (cl); | |
4228 | ||
4229 | sRefSet_elements (rfs, el) | |
616915dd | 4230 | { |
28bf4b0b | 4231 | sRef base = sRef_getRootBase (el); |
4232 | ||
4233 | if (sRef_isResult (base)) | |
616915dd | 4234 | { |
28bf4b0b | 4235 | /* |
4236 | ** This is checked for return transfers. | |
4237 | */ | |
4238 | ||
4239 | ; | |
616915dd | 4240 | } |
28bf4b0b | 4241 | else if (sRef_isParam (base)) |
4242 | { | |
4243 | sRef sr = sRef_updateSref (base); | |
4244 | sr = sRef_fixBase (el, sr); | |
4245 | ||
4246 | if (tst != NULL && !tst (sr)) | |
4247 | { | |
4248 | if (optgenerror | |
4249 | (stateClause_postErrorCode (cl), | |
4250 | message ("%s storage %qcorresponds to " | |
4251 | "storage listed in %q clause", | |
4252 | stateClause_postErrorString (cl, sr), | |
4253 | sRef_unparseOpt (sr), | |
4254 | stateClause_unparseKind (cl)), | |
4255 | g_currentloc)) | |
4256 | { | |
4257 | sRefShower ss = stateClause_getPostTestShower (cl); | |
4258 | ||
4259 | if (ss != NULL) | |
4260 | { | |
4261 | ss (sr); | |
4262 | } | |
1d239d69 | 4263 | |
3120b462 | 4264 | DPRINTF (("Storage: %s", sRef_unparseFull (sr))); |
28bf4b0b | 4265 | } |
4266 | } | |
4267 | } | |
4268 | else | |
4269 | { | |
4270 | if (sRef_isMeaningful (el)) | |
4271 | { | |
4272 | BADBRANCH; | |
4273 | } | |
4274 | } | |
4275 | } end_sRefSet_elements ; | |
4276 | } | |
616915dd | 4277 | } |
28bf4b0b | 4278 | } end_stateClauseList_elements ; |
616915dd | 4279 | } |
4280 | ||
4281 | /* | |
4282 | ** check parameters on return | |
4283 | */ | |
4284 | ||
4285 | uentryList_elements (params, arg) | |
4286 | { | |
4287 | if (!uentry_isElipsisMarker (arg)) | |
4288 | { | |
4289 | ctype rt = ctype_realType (uentry_getType (arg)); | |
4290 | ||
4291 | if (ctype_isMutable (rt) || ctype_isSU (rt)) | |
4292 | { | |
4293 | uentry param = usymtab_lookupQuiet (utab, uentry_rawName (arg)); | |
28bf4b0b | 4294 | DPRINTF (("Check param return: %s", uentry_unparseFull (param))); |
2e127cb8 | 4295 | transferChecks_paramReturn (param); |
616915dd | 4296 | } |
4297 | } | |
4298 | } end_uentryList_elements; | |
4299 | ||
28bf4b0b | 4300 | DPRINTF (("Check global return: %s", |
4301 | globSet_unparse (sglobs))); | |
4302 | ||
616915dd | 4303 | globSet_allElements (sglobs, el) |
4304 | { | |
28bf4b0b | 4305 | sRef orig = el; /*! sRef_updateSref (el); */ /*!!!*/ |
616915dd | 4306 | uentry current = sRef_getUentry (el); |
4307 | ||
28bf4b0b | 4308 | DPRINTF (("Check global return: %s / %s", sRef_unparseFull (el), |
4309 | uentry_unparseFull (current))); | |
4310 | ||
616915dd | 4311 | if (uentry_isVariable (current) && !uentry_isRealFunction (current)) |
4312 | { | |
28bf4b0b | 4313 | checkGlobalReturn (current, orig); |
616915dd | 4314 | } |
4315 | } end_globSet_allElements; | |
4316 | ||
4317 | globSet_allElements (uglobs, el) | |
4318 | { | |
4319 | if (!globSet_member (sglobs, el)) | |
4320 | { | |
4321 | uentry current = sRef_getUentry (el); | |
4322 | ||
616915dd | 4323 | if (uentry_isVariable (current) |
4324 | && !uentry_isRealFunction (current)) | |
4325 | { | |
4326 | checkGlobalReturn (current, sRef_undefined); | |
4327 | } | |
4328 | } | |
4329 | } end_globSet_allElements; | |
28bf4b0b | 4330 | } |
4331 | } | |
616915dd | 4332 | |
4333 | void | |
4334 | usymtab_quietExitScope (fileloc loc) | |
4335 | /*@globals utab, globtab, filetab; @*/ | |
4336 | /*@modifies utab@*/ | |
4337 | { | |
4338 | usymtab t = utab->env; | |
4339 | ||
4340 | if (utab->reftable != NULL) | |
4341 | { | |
4342 | int i; | |
4343 | ||
4344 | for (i = 0; i < utab->nentries; i++) | |
4345 | { | |
4346 | uentry current = utab->entries[i]; | |
4347 | uentry old = usymtab_lookupAux (t, uentry_rawName (current)); | |
4348 | ||
4349 | uentry_mergeState (old, current, loc, FALSE, FALSE, FALSE, NOCLAUSE); | |
4350 | } | |
4351 | } | |
4352 | ||
4353 | llassert (t != NULL); | |
4354 | ||
4355 | if (t->lexlevel > paramsScope) | |
4356 | { | |
4357 | t->guards = guardSet_levelUnion (t->guards, utab->guards, t->lexlevel); | |
4358 | t->aliases = aliasTable_levelUnionSeq (t->aliases, utab->aliases, | |
4359 | t->lexlevel); | |
4360 | utab->aliases = aliasTable_undefined; | |
4361 | } | |
4362 | ||
4363 | t->mustBreak = utab->mustBreak; | |
4364 | t->exitCode = utab->exitCode; | |
4365 | ||
4366 | usymtab_freeLevel (utab); | |
4367 | ||
4368 | utab = t; | |
6483a926 | 4369 | |
4370 | # ifdef DEBUGSPLINT | |
4371 | usymtab_checkAllValid (); | |
4372 | # endif | |
616915dd | 4373 | } |
4374 | ||
4375 | /* | |
4376 | ** Exit a scope with no checking, lose alias states. | |
4377 | ** (When should this be used?) | |
4378 | */ | |
4379 | ||
4380 | void usymtab_quietPlainExitScope (void) | |
4381 | /*@globals utab, globtab, filetab@*/ | |
4382 | /*@modifies utab@*/ | |
4383 | { | |
4384 | usymtab t = utab->env; | |
4385 | ||
4386 | llassert (t != NULL); | |
4387 | llassert (NOALIAS (utab->aliases, t->aliases)); | |
4388 | usymtab_freeLevel (utab); | |
4389 | utab = t; | |
4390 | } | |
4391 | ||
4392 | void usymtab_exitScope (exprNode expr) | |
4393 | /*@globals utab, filetab, globtab@*/ | |
4394 | /*@modifies utab, globtab@*/ | |
4395 | { | |
4396 | usymtab ctab = usymtab_undefined; | |
4397 | usymtab lctab = usymtab_undefined; | |
4398 | bool mustReturn = exprNode_mustEscape (expr); | |
28bf4b0b | 4399 | |
4400 | DPRINTF (("Exit scope")); | |
4401 | ||
616915dd | 4402 | if (utab->kind == US_CBRANCH) |
4403 | { | |
4404 | /* | |
4405 | ** save the case branches, remove the first non-cbranch | |
4406 | */ | |
4407 | ||
4408 | ctab = utab; | |
4409 | ||
4410 | while (utab->kind == US_CBRANCH) | |
4411 | { | |
4412 | lctab = utab; | |
4413 | utab = utab->env; | |
4414 | llassert (utab != GLOBAL_ENV); | |
4415 | } | |
4416 | } | |
4417 | ||
4418 | if (utab->kind == US_TBRANCH || utab->kind == US_FBRANCH | |
6483a926 | 4419 | || utab->kind == US_CBRANCH || utab->kind == US_SWITCH) |
4420 | { | |
4421 | if (context_inMacro ()) | |
616915dd | 4422 | { |
6483a926 | 4423 | /* evs 2000-07-25 */ |
4424 | /* Unparseable macro may end inside nested scope. Deal with it. */ | |
4425 | ||
4426 | llerror (FLG_SYNTAX, | |
4427 | message ("Problem parsing macro body of %s (unbalanced scopes). " | |
4428 | "Attempting to recover, recommend /*@notfunction@*/ before " | |
4429 | "macro definition.", | |
4430 | context_inFunctionName ())); | |
4431 | ||
4432 | while (utab->kind == US_TBRANCH | |
4433 | || utab->kind == US_FBRANCH | |
4434 | || utab->kind == US_CBRANCH | |
4435 | || utab->kind == US_SWITCH) | |
4436 | { | |
4437 | utab = utab->env; | |
4438 | llassert (utab != GLOBAL_ENV); | |
4439 | } | |
4440 | } else | |
4441 | { | |
4442 | llcontbug (message ("exitScope: in branch: %q", usymtab_unparseStack ())); | |
4443 | /*@-branchstate@*/ | |
4444 | } /*@=branchstate@*/ | |
4445 | } | |
4446 | ||
616915dd | 4447 | /* |
4448 | ** check all variables in scope were used | |
4449 | */ | |
4450 | ||
4451 | /* | |
4452 | ** bogus errors if this is the normal inside a switch, | |
4453 | ** since cases have not been merged yet. Should probably | |
4454 | ** still check this, but I'm too lazy at the moment... | |
4455 | */ | |
4456 | ||
4457 | llassertfatal (utab->env != GLOBAL_ENV); | |
4458 | ||
4459 | if (utab->env->kind != US_SWITCH) | |
4460 | { | |
4461 | usymtab_allUsed (); | |
4462 | } | |
4463 | ||
4464 | /* | |
4465 | ** check aliasing: all only params are released (dead) | |
4466 | ** definition: all out params are defined, all modified params | |
4467 | ** are completely defined | |
4468 | ** | |
4469 | ** NOTE: note for exiting paramsScope, since checkReturn should be | |
4470 | ** called first. | |
4471 | */ | |
6483a926 | 4472 | |
616915dd | 4473 | if (!mustReturn && (usymtab_lexicalLevel () > functionScope)) |
4474 | { | |
4475 | /* | |
4476 | ** should only call this is end of scope is reachable... | |
4477 | */ | |
4478 | ||
4479 | usymtab_checkFinalScope (FALSE); | |
4480 | } | |
4481 | ||
4482 | if (usymtab_lexicalLevel () == paramsScope && context_inFunctionLike ()) | |
4483 | { | |
4484 | /* | |
4485 | ** leaving a function, need to fix up globals | |
4486 | */ | |
4487 | ||
4488 | uentryList params = context_getParams (); | |
4489 | globSet globs = context_getUsedGlobs (); | |
4490 | ||
616915dd | 4491 | uentryList_elements (params, ue) |
4492 | { | |
4493 | uentry_fixupSref (ue); | |
4494 | } end_uentryList_elements; | |
4495 | ||
4496 | clearFunctionTypes (); | |
4497 | ||
6483a926 | 4498 | DPRINTF (("Fixing up globals: %s", globSet_unparse (globs))); |
4499 | ||
616915dd | 4500 | globSet_allElements (globs, el) |
4501 | { | |
6483a926 | 4502 | DPRINTF (("Fix: %s", sRef_unparseDebug (el))); |
4503 | ||
616915dd | 4504 | if (sRef_isCvar (el)) |
4505 | { | |
4506 | uentry current; | |
4507 | int index = sRef_getScopeIndex (el); | |
4508 | ||
4509 | if (sRef_isFileStatic (el)) | |
4510 | { | |
4511 | llassert (usymtab_isDefined (filetab)); | |
4512 | current = usymtab_fetchIndex (filetab, index); | |
4513 | } | |
4514 | else | |
4515 | { | |
4516 | current = usymtab_fetchIndex (globtab, index); | |
4517 | } | |
4518 | ||
4519 | if (uentry_isVariable (current)) | |
4520 | { | |
6483a926 | 4521 | DPRINTF (("Fixup: %s", uentry_unparse (current))); |
616915dd | 4522 | uentry_fixupSref (current); |
4523 | } | |
4524 | else | |
4525 | { | |
6483a926 | 4526 | DPRINTF (("Clear: %s", uentry_getSref (current))); |
616915dd | 4527 | sRef_clearDerived (uentry_getSref (current)); |
4528 | } | |
4529 | } | |
6483a926 | 4530 | |
4531 | sRef_clearDerived (el); /* evans 2002-03-14 - this is the likely source of many crashes! */ | |
616915dd | 4532 | } end_globSet_allElements; |
4533 | } | |
4534 | ||
4535 | usymtab_quietExitScope (exprNode_loc (expr)); | |
4536 | ||
4537 | if (lctab != usymtab_undefined) | |
4538 | { | |
4539 | /*@i@*/ lctab->env = utab; | |
4540 | /*@i@*/ utab = ctab; | |
4541 | /*@-branchstate@*/ } /*@=branchstate@*/ | |
146e25eb | 4542 | /*@-globstate@*/ |
6483a926 | 4543 | |
4544 | ||
4545 | # ifdef DEBUGSPLINT | |
4546 | usymtab_checkAllValid (); | |
4547 | # endif | |
146e25eb | 4548 | /*@i523@*/ } |
616915dd | 4549 | /*@=globstate@*/ |
4550 | ||
4551 | /* | |
4552 | ** yikes! don't let the '170 kids see this one... | |
4553 | */ | |
4554 | ||
4555 | int | |
4556 | uentry_directParamNo (uentry ue) | |
4557 | { | |
4558 | if (uentry_isVar (ue)) | |
4559 | { | |
4560 | sRef sr = uentry_getSref (ue); | |
4561 | ||
4562 | if (sRef_lexLevel (sr) == functionScope) | |
4563 | { | |
abd7f895 | 4564 | int index = sRef_getScopeIndex (sr); |
616915dd | 4565 | |
4566 | if (index < uentryList_size (context_getParams ())) | |
4567 | { | |
4568 | return index; | |
4569 | } | |
4570 | } | |
4571 | } | |
4572 | return -1; | |
4573 | } | |
4574 | ||
4575 | /*@dependent@*/ /*@exposed@*/ uentry | |
4576 | usymtab_getParam (int paramno) | |
4577 | /*@globals utab@*/ | |
4578 | { | |
4579 | /* | |
4580 | ** requires in a function context (checked) | |
4581 | ** | |
4582 | ** depends on no nested functions --- the function | |
4583 | ** parameters are ALWAYS one scope inside the global scope | |
4584 | ** and entered in order! | |
4585 | */ | |
4586 | usymtab s = utab; | |
4587 | ||
4588 | if (!context_inFunctionLike ()) | |
4589 | llfatalbug (message ("usymtab_getParam: not in function context: %q", | |
4590 | context_unparse ())); | |
4591 | ||
4592 | while (s->lexlevel > paramsScope) | |
4593 | { | |
4594 | s = s->env; | |
4595 | } | |
4596 | ||
4597 | llassert (usymtab_isDefined (s)); | |
4598 | ||
4599 | if (paramno >= s->nentries) | |
4600 | { | |
4601 | /* | |
4602 | ** Parse errors lead to this. | |
4603 | */ | |
4604 | ||
4605 | uentry err = uentry_makeVariableLoc (cstring_makeLiteralTemp ("<error>"), | |
4606 | ctype_unknown); | |
4607 | ||
4608 | uentry_markOwned (err); | |
4609 | return (err); | |
4610 | } | |
4611 | ||
4612 | return (s->entries[paramno]); | |
4613 | } | |
4614 | ||
4615 | static /*@dependent@*/ /*@exposed@*/ uentry | |
4616 | usymtab_getRefTab (/*@notnull@*/ usymtab u, int level, usymId index) | |
4617 | { | |
4618 | uentry ue; | |
4619 | ||
616915dd | 4620 | ue = usymtab_getRefNoisy (u, level, index); |
4621 | ||
616915dd | 4622 | if (uentry_isUndefined (ue)) |
4623 | { | |
4624 | llbug (message ("usymtab_getRef: out of range: %d. level = %d", | |
4625 | index, level)); | |
4626 | } | |
616915dd | 4627 | |
4628 | return ue; | |
4629 | } | |
4630 | ||
4631 | static /*@dependent@*/ /*@exposed@*/ usymtab | |
4632 | usymtab_dropEnv (/*@notnull@*/ usymtab s) | |
4633 | { | |
4634 | if (s->kind == US_CBRANCH) | |
4635 | { | |
4636 | usymtab t = s; | |
4637 | ||
4638 | do | |
4639 | { | |
4640 | t = s; | |
4641 | s = s->env; | |
4642 | llassert (s != GLOBAL_ENV); | |
4643 | } while (s->kind == US_CBRANCH); | |
4644 | /* drop all cases (except in nested scopes */ | |
4645 | ||
4646 | s = t; | |
4647 | llassert (s != GLOBAL_ENV); | |
4648 | } | |
4649 | ||
4650 | if (s->kind == US_FBRANCH) | |
4651 | { | |
4652 | s = s->env; /* skip the true branch */ | |
4653 | llassert (usymtab_isDefined (s)); | |
4654 | llassert (s->kind == US_TBRANCH); | |
4655 | } | |
4656 | ||
4657 | llassert (s != GLOBAL_ENV); | |
4658 | s = s->env; | |
4659 | ||
4660 | return s; | |
4661 | } | |
4662 | ||
4663 | /*@dependent@*/ /*@exposed@*/ uentry | |
4664 | usymtab_getRefQuiet (int level, usymId index) | |
4665 | /*@globals utab@*/ | |
4666 | { | |
4667 | usymtab s = utab; | |
4668 | ||
4669 | ||
4670 | llassert (s != NULL); | |
4671 | llassert (index >= 0); | |
4672 | ||
4673 | if (level > s->lexlevel) | |
28bf4b0b | 4674 | { |
616915dd | 4675 | return uentry_undefined; |
4676 | } | |
4677 | ||
4678 | llassertprint (level <= s->lexlevel, ("level: %d / lexlevel: %d", | |
4679 | level, s->lexlevel)); | |
4680 | ||
4681 | while (s->lexlevel > level) | |
4682 | { | |
4683 | if (usymtab_isBranch (s)) | |
4684 | { | |
4685 | int eindex = refTable_lookup (s, level, index); | |
4686 | ||
4687 | if (eindex != NOT_FOUND) | |
4688 | { | |
4689 | return (s->entries[eindex]); | |
4690 | } | |
4691 | } | |
4692 | ||
4693 | s = usymtab_dropEnv (s); | |
4694 | } | |
4695 | ||
4696 | while (usymtab_isBranch (s) && s->lexlevel == level) | |
4697 | { | |
4698 | int eindex = refTable_lookup (s, level, index); | |
4699 | ||
4700 | if (eindex != NOT_FOUND) | |
4701 | { | |
4702 | return (s->entries[eindex]); | |
4703 | } | |
4704 | ||
4705 | s = usymtab_dropEnv (s); | |
4706 | } | |
4707 | ||
4708 | if (index >= s->nentries) | |
4709 | { | |
4710 | return uentry_undefined; | |
4711 | } | |
4712 | ||
4713 | llassert (!uentry_isUndefined (s->entries[index])); | |
4714 | ||
4715 | return s->entries[index]; | |
4716 | } | |
4717 | ||
4718 | static /*@dependent@*/ /*@exposed@*/ uentry | |
4719 | usymtab_getRefNoisy (/*@notnull@*/ usymtab s, int level, usymId index) | |
4720 | { | |
4721 | usymtab otab = s; | |
4722 | uentry ue = uentry_undefined; | |
616915dd | 4723 | |
4724 | llassert (index >= 0); | |
616915dd | 4725 | |
4726 | while (s->lexlevel > level) | |
4727 | { | |
616915dd | 4728 | if (usymtab_isBranch (s)) |
4729 | { | |
4730 | int eindex = refTable_lookup (s, level, index); | |
4731 | ||
4732 | if (eindex != NOT_FOUND) | |
4733 | { | |
4734 | ue = s->entries[eindex]; | |
4735 | ||
4736 | if (s != otab) | |
4737 | { | |
4738 | while (!usymtab_isBranch (otab)) | |
4739 | { | |
4740 | otab = usymtab_dropEnv (otab); | |
4741 | llassert (otab != GLOBAL_ENV); | |
4742 | } | |
4743 | ||
4744 | if (refTable_lookup (otab, level, index) == NOT_FOUND) | |
4745 | { | |
4746 | ue = usymtab_addRefEntry (otab, uentry_rawName (ue)); | |
4747 | } | |
4748 | else | |
4749 | { | |
4750 | ; | |
4751 | } | |
4752 | } | |
4753 | ||
4754 | return ue; | |
4755 | } | |
4756 | } | |
4757 | ||
4758 | s = usymtab_dropEnv (s); | |
4759 | } | |
4760 | ||
4761 | llassert (usymtab_isDefined (s)); | |
4762 | ||
4763 | while (usymtab_isBranch (s) && s->lexlevel == level) | |
4764 | { | |
4765 | int eindex = refTable_lookup (s, level, index); | |
4766 | ||
4767 | ||
4768 | if (eindex != NOT_FOUND) | |
4769 | { | |
4770 | ue = s->entries[eindex]; | |
4771 | ||
4772 | if (s != otab) | |
4773 | { | |
4774 | while (!usymtab_isBranch (otab)) | |
4775 | { | |
4776 | otab = usymtab_dropEnv (otab); | |
4777 | llassert (otab != GLOBAL_ENV); | |
4778 | } | |
4779 | ||
4780 | ue = usymtab_addRefEntry (otab, uentry_rawName (ue)); | |
4781 | } | |
4782 | else | |
4783 | { | |
4784 | ; | |
4785 | } | |
4786 | ||
4787 | return ue; | |
4788 | } | |
4789 | ||
4790 | s = usymtab_dropEnv (s); | |
4791 | } | |
4792 | ||
4793 | if (s->lexlevel == level && (index < s->nentries)) | |
4794 | { | |
4795 | ue = s->entries[index]; | |
4796 | ||
4797 | if (uentry_isValid (ue)) | |
4798 | { | |
4799 | if (s != otab) | |
4800 | { | |
4801 | while (!usymtab_isBranch (otab)) | |
4802 | { | |
4803 | otab = usymtab_dropEnv (otab); | |
4804 | ||
4805 | if (otab == GLOBAL_ENV) | |
4806 | { | |
4807 | return ue; | |
4808 | } | |
4809 | } | |
4810 | ||
4811 | ue = usymtab_addRefEntry (otab, uentry_rawName (ue)); | |
4812 | } | |
4813 | else | |
4814 | { | |
28bf4b0b | 4815 | } |
616915dd | 4816 | } |
28bf4b0b | 4817 | |
616915dd | 4818 | return ue; |
4819 | } | |
4820 | ||
4821 | ||
4822 | if (index >= s->nentries) | |
4823 | { | |
4824 | return uentry_undefined; | |
4825 | } | |
4826 | ||
4827 | llassert (!uentry_isUndefined (s->entries[index])); | |
4828 | ||
4829 | return s->entries[index]; | |
4830 | } | |
4831 | ||
4832 | /* | |
4833 | ** looking up entries | |
4834 | ** | |
4835 | ** If entry is inside a branch, then copy it, and put it into | |
4836 | ** the branch table. | |
4837 | */ | |
4838 | ||
4839 | static | |
4840 | int refTable_lookup (/*@notnull@*/ usymtab ut, int level, int index) | |
4841 | { | |
4842 | refTable rt = ut->reftable; | |
4843 | int i; | |
4844 | ||
4845 | llassert (rt != NULL); | |
4846 | ||
616915dd | 4847 | for (i = 0; i < ut->nentries; i++) |
4848 | { | |
4849 | if (rt[i]->level == level && rt[i]->index == index) | |
4850 | { | |
28bf4b0b | 4851 | return i; |
616915dd | 4852 | } |
4853 | } | |
28bf4b0b | 4854 | |
4855 | return NOT_FOUND; | |
616915dd | 4856 | } |
4857 | ||
4858 | static | |
4859 | /*@only@*/ refentry refentry_create (int level, int index) | |
4860 | { | |
4861 | refentry r = (refentry) dmalloc (sizeof (*r)); | |
4862 | ||
4863 | r->level = level; | |
4864 | r->index = index; | |
4865 | ||
4866 | return r; | |
4867 | } | |
4868 | ||
4869 | static /*@dependent@*/ /*@exposed@*/ uentry | |
4870 | usymtab_addRefEntry (/*@notnull@*/ usymtab s, cstring k) | |
4871 | { | |
4872 | int eindex; | |
4873 | usymtab ut = s; | |
4874 | ||
28bf4b0b | 4875 | if (ut->reftable == NULL) |
4876 | { | |
4877 | DPRINTF (("Adding ref entry without reftable: %s", k)); | |
4878 | return uentry_undefined; | |
4879 | } | |
616915dd | 4880 | |
28bf4b0b | 4881 | llassert (ut->reftable != NULL); |
4882 | ||
616915dd | 4883 | while (s != GLOBAL_ENV) |
4884 | { | |
4885 | eindex = usymtab_getIndex (s, k); | |
4886 | ||
4887 | if (eindex != NOT_FOUND) | |
4888 | { | |
4889 | uentry current = s->entries[eindex]; | |
4890 | ||
4891 | if (uentry_isVar (current) && !ctype_isFunction (uentry_getType (current))) | |
4892 | { | |
4893 | uentry ue; | |
4894 | ||
28bf4b0b | 4895 | DPRINTF (("Here: copying %s", uentry_unparse (current))); |
616915dd | 4896 | ue = uentry_copy (current); |
28bf4b0b | 4897 | DPRINTF (("Here: copying %s", uentry_unparse (ue))); |
616915dd | 4898 | usymtab_addEntryQuiet (ut, ue); |
28bf4b0b | 4899 | DPRINTF (("Okay...")); |
4900 | ||
616915dd | 4901 | if (s->reftable != NULL) |
4902 | { | |
4903 | refentry ref = s->reftable[eindex]; | |
616915dd | 4904 | |
4905 | ut->reftable[ut->nentries - 1] | |
4906 | = refentry_create (ref->level, ref->index); | |
4907 | } | |
4908 | else | |
4909 | { | |
4910 | ut->reftable[ut->nentries - 1] | |
4911 | = refentry_create (s->lexlevel, eindex); | |
4912 | } | |
4913 | ||
4914 | return (ue); | |
4915 | } | |
4916 | else | |
4917 | { | |
4918 | return (current); | |
4919 | } | |
4920 | } | |
4921 | ||
4922 | s = usymtab_dropEnv (s); | |
4923 | } | |
4924 | ||
4925 | return uentry_undefined; | |
4926 | } | |
4927 | ||
4928 | static uentry usymtab_lookupAux (usymtab s, cstring k) | |
4929 | { | |
4930 | DPRINTF (("Lookup: %s", k)); | |
4931 | ||
4932 | while (s != GLOBAL_ENV) | |
4933 | { | |
4934 | int eindex = usymtab_getIndex (s, k); | |
4935 | ||
4936 | if (eindex != NOT_FOUND) | |
4937 | { | |
4938 | uentry ret = s->entries[eindex]; | |
28bf4b0b | 4939 | # if 0 |
4940 | ||
616915dd | 4941 | |
28bf4b0b | 4942 | if (s->kind == US_TBRANCH |
4943 | || s->kind == US_FBRANCH | |
4944 | || s->kind == US_CBRANCH) | |
4945 | /* uentry_isGlobalVariable (ret) && os->lexlevel > fileScope) */ | |
4946 | { | |
4947 | uentry ret; | |
4948 | DPRINTF (("Adding global ref entry: %s", k)); | |
4949 | ret = usymtab_addRefEntry (os, k); | |
4950 | DPRINTF (("Adding ref entry: %s", uentry_unparseFull (ret))); | |
4951 | return ret; | |
4952 | } | |
4953 | ||
4954 | # endif | |
616915dd | 4955 | DPRINTF (("Found: %s", uentry_unparseFull (ret))); |
4956 | return (ret); | |
4957 | } | |
28bf4b0b | 4958 | |
616915dd | 4959 | if (s->kind == US_TBRANCH || s->kind == US_FBRANCH |
4960 | || s->kind == US_CBRANCH) | |
4961 | { | |
28bf4b0b | 4962 | /* why isn't this os??? */ |
616915dd | 4963 | uentry ret = usymtab_addRefEntry (s, k); |
28bf4b0b | 4964 | DPRINTF (("Adding ref entry: %s", uentry_unparseFull (ret))); |
616915dd | 4965 | return ret; |
4966 | } | |
4967 | ||
4968 | s = s->env; | |
4969 | } | |
4970 | ||
4971 | return uentry_undefined; | |
4972 | } | |
4973 | ||
4974 | static /*@dependent@*/ /*@exposed@*/ uentry | |
28bf4b0b | 4975 | usymtab_lookupQuietAux (usymtab s, cstring k, bool noalt) |
616915dd | 4976 | { |
4977 | int eindex; | |
4978 | ||
4979 | while (s != GLOBAL_ENV) | |
4980 | { | |
4981 | eindex = usymtab_getIndex (s, k); | |
4982 | ||
4983 | if (eindex != NOT_FOUND) | |
4984 | { | |
4985 | uentry ret = s->entries[eindex]; | |
4986 | return (ret); | |
4987 | } | |
4988 | ||
28bf4b0b | 4989 | if (noalt && usymtab_isBranch (s)) |
4990 | { | |
4991 | s = usymtab_dropEnv (s); | |
4992 | } | |
4993 | else | |
4994 | { | |
abd7f895 | 4995 | llassert (s != NULL); /*@i523 should not need this? */ |
28bf4b0b | 4996 | s = s->env; |
4997 | } | |
616915dd | 4998 | } |
4999 | ||
5000 | return uentry_undefined; | |
5001 | } | |
5002 | ||
28bf4b0b | 5003 | static /*@exposed@*/ /*@dependent@*/ uentry |
5004 | usymtab_lookupQuiet (usymtab s, cstring k) | |
5005 | { | |
5006 | return usymtab_lookupQuietAux (s, k, FALSE); | |
5007 | } | |
5008 | ||
5009 | static /*@exposed@*/ /*@dependent@*/ uentry | |
5010 | usymtab_lookupQuietNoAlt (usymtab s, cstring k) | |
5011 | { | |
5012 | return usymtab_lookupQuietAux (s, k, TRUE); | |
5013 | } | |
5014 | ||
616915dd | 5015 | /*@dependent@*/ /*@observer@*/ uentry |
5016 | usymtab_lookupSafe (cstring k) | |
5017 | /*@globals utab@*/ | |
5018 | { | |
5019 | DPRINTF (("Lookup safe: %s", k)); | |
5020 | return (usymtab_lookupAux (utab, k)); | |
5021 | } | |
5022 | ||
5023 | uentry | |
5024 | usymtab_lookupExpose (cstring k) | |
5025 | /*@globals utab@*/ | |
5026 | { | |
5027 | uentry ce = usymtab_lookupAux (utab, k); | |
5028 | ||
5029 | if (uentry_isUndefined (ce)) | |
5030 | { | |
5031 | llfatalbug (message ("usymtab_lookup: not found: *%s*", k)); | |
5032 | } | |
5033 | ||
5034 | if (uentry_isPriv (ce)) | |
5035 | { | |
5036 | llfatalbug (message ("usymtab_lookup: private: *%s*", k)); | |
5037 | } | |
5038 | ||
5039 | return ce; | |
5040 | } | |
5041 | ||
5042 | uentry usymtab_lookupExposeGlob (cstring k) | |
5043 | { | |
5044 | return (usymtab_lookupGlobSafe (k)); | |
5045 | } | |
5046 | ||
5047 | uentry usymtab_lookupGlob (cstring k) | |
5048 | /*@globals globtab@*/ | |
5049 | { | |
5050 | uentry ce = usymtab_lookupAux (globtab, k); | |
5051 | ||
5052 | if (uentry_isUndefined (ce)) | |
5053 | llfatalbug (message ("usymtab_lookup: not found: %s", k)); | |
5054 | ||
5055 | if (uentry_isPriv (ce)) | |
5056 | llfatalbug (message ("usymtab_lookup: private: %s", k)); | |
5057 | ||
6483a926 | 5058 | DPRINTF (("Lookup global: %s", uentry_unparseFull (ce))); |
616915dd | 5059 | return ce; |
5060 | } | |
5061 | ||
5062 | /*@observer@*/ uentry | |
5063 | usymtab_lookupGlobSafe (cstring k) | |
5064 | /*@globals globtab@*/ | |
5065 | { | |
5066 | uentry ce = usymtab_lookupAux (globtab, k); | |
6483a926 | 5067 | DPRINTF (("Lookup global: %s", uentry_unparseFull (ce))); |
616915dd | 5068 | return ce; |
5069 | } | |
5070 | ||
5071 | uentry usymtab_lookupEither (cstring k) | |
5072 | /*@globals utab@*/ | |
5073 | { | |
5074 | uentry ce = usymtab_lookupSafe (k); | |
5075 | ||
5076 | if (uentry_isUndefined (ce)) | |
5077 | llfatalerror (message ("usymtab_lookup: not found: %s", k)); | |
5078 | ||
6483a926 | 5079 | DPRINTF (("Lookup either: %s", uentry_unparseFull (ce))); |
616915dd | 5080 | return ce; |
5081 | } | |
5082 | ||
5083 | # ifndef NOLCL | |
5084 | ctype | |
5085 | usymtab_lookupType (cstring k) | |
5086 | /*@globals globtab@*/ | |
5087 | { | |
5088 | usymId uid = usymtab_getTypeId (k); | |
5089 | ||
5090 | if (uid == USYMIDINVALID) | |
5091 | { | |
5092 | llcontbug (message ("usymtab_lookupType: not found: %s", k)); | |
5093 | return ctype_unknown; | |
5094 | } | |
5095 | ||
5096 | return (uentry_getRealType (usymtab_getTypeEntry (uid))); | |
5097 | } | |
5098 | # endif | |
5099 | ||
5100 | ctype | |
5101 | usymtab_lookupAbstractType (cstring k) /*@globals globtab@*/ | |
5102 | { | |
5103 | usymId uid = usymtab_getTypeId (k); | |
5104 | ||
5105 | if (uid == USYMIDINVALID) | |
5106 | { | |
5107 | llcontbug (message ("usymtab_lookupType: not found: %s", k)); | |
5108 | return ctype_unknown; | |
5109 | } | |
5110 | ||
5111 | return (uentry_getAbstractType (usymtab_getTypeEntry (uid))); | |
5112 | } | |
5113 | ||
5114 | /* | |
5115 | ** if there is an unnamed lcl-specified struct tag matching | |
5116 | ** the uentryList, return its datatype. Otherwise, returns | |
5117 | ** ctype_undefined. | |
5118 | */ | |
5119 | ||
5120 | ctype | |
5121 | usymtab_structFieldsType (uentryList f) | |
5122 | /*@globals globtab@*/ | |
5123 | { | |
5124 | return (usymtab_suFieldsType (f, TRUE)); | |
5125 | } | |
5126 | ||
5127 | ctype | |
5128 | usymtab_unionFieldsType (uentryList f) | |
5129 | /*@globals globtab@*/ | |
5130 | { | |
5131 | return (usymtab_suFieldsType (f, FALSE)); | |
5132 | } | |
5133 | ||
5134 | static ctype | |
5135 | usymtab_suFieldsType (uentryList f, bool isStruct) | |
5136 | /*@globals globtab@*/ | |
5137 | { | |
5138 | int i; | |
5139 | ||
28bf4b0b | 5140 | DPRINTF (("Fields: %s", uentryList_unparse (f))); |
5141 | ||
5142 | if (fileloc_isSpec (g_currentloc)) | |
5143 | { | |
5144 | return (ctype_undefined); | |
5145 | } | |
616915dd | 5146 | |
5147 | for (i = 0; i < globtab->nentries; i++) | |
5148 | { | |
5149 | uentry current = globtab->entries[i]; | |
5150 | ||
5151 | if ((isStruct | |
5152 | ? uentry_isStructTag (current) : uentry_isUnionTag (current))) | |
5153 | { | |
5154 | if (isFakeTag (uentry_rawName (current))) | |
5155 | { | |
5156 | ctype ct = uentry_getType (current); | |
28bf4b0b | 5157 | |
5158 | DPRINTF (("Check: %s", ctype_unparse (ct))); | |
616915dd | 5159 | |
5160 | if ((isStruct ? ctype_isStruct (ct) : ctype_isUnion (ct)) | |
28bf4b0b | 5161 | && |
5162 | (uentry_isSpecified (current) | |
5163 | && uentryList_equivFields (f, ctype_getFields (ct)))) | |
616915dd | 5164 | { |
28bf4b0b | 5165 | return uentry_getAbstractType (current); |
5166 | } | |
5167 | else | |
5168 | { | |
5169 | ; | |
616915dd | 5170 | } |
5171 | } | |
5172 | } | |
5173 | } | |
5174 | ||
5175 | return ctype_undefined; | |
5176 | } | |
5177 | ||
5178 | ctype | |
5179 | usymtab_enumEnumNameListType (enumNameList f) | |
5180 | /*@globals globtab@*/ | |
5181 | { | |
5182 | int i; | |
5183 | ||
5184 | for (i = 0; i < globtab->nentries; i++) | |
5185 | { | |
5186 | uentry current = globtab->entries[i]; | |
5187 | ||
5188 | if (uentry_isEnumTag (current)) | |
5189 | { | |
5190 | if (isFakeTag (uentry_rawName (current))) | |
5191 | { | |
5192 | ctype ct = uentry_getType (current); | |
5193 | ||
5194 | if (ctype_isEnum (ct) && (enumNameList_match (f, ctype_elist (ct)))) | |
5195 | { | |
5196 | return uentry_getType (current); | |
5197 | } | |
5198 | } | |
5199 | } | |
5200 | } | |
5201 | ||
5202 | return ctype_undefined; | |
5203 | } | |
5204 | ||
5205 | bool | |
5206 | usymtab_exists (cstring k) | |
5207 | /*@globals utab@*/ | |
5208 | { | |
5209 | uentry ce = usymtab_lookupSafe (k); | |
616915dd | 5210 | return (!(uentry_isUndefined (ce)) && !(uentry_isPriv (ce))); |
5211 | } | |
5212 | ||
5213 | bool | |
5214 | usymtab_existsReal (cstring k) | |
5215 | /*@globals utab@*/ | |
5216 | { | |
5217 | uentry ce = usymtab_lookupSafe (k); | |
5218 | ||
5219 | return (!(uentry_isUndefined (ce)) | |
5220 | && !(uentry_isPriv (ce)) | |
5221 | && !(uentry_isExpandedMacro (ce))); | |
5222 | } | |
5223 | ||
5224 | bool | |
5225 | usymtab_existsGlob (cstring k) | |
5226 | /*@globals globtab@*/ | |
5227 | { | |
5228 | uentry ce = usymtab_lookupAux (globtab, k); | |
5229 | ||
5230 | return (!(uentry_isUndefined (ce)) && !(uentry_isPriv (ce))); | |
5231 | } | |
5232 | ||
5233 | # ifndef NOLCL | |
5234 | bool | |
5235 | usymtab_existsEither (cstring k) | |
5236 | /*@globals utab@*/ | |
5237 | { | |
5238 | uentry ce = usymtab_lookupAux (utab, k); | |
5239 | ||
5240 | return (uentry_isValid (ce)); | |
5241 | } | |
5242 | ||
5243 | bool | |
5244 | usymtab_existsGlobEither (cstring k) | |
5245 | /*@globals globtab@*/ | |
5246 | { | |
5247 | uentry ce = usymtab_lookupAux (globtab, k); | |
5248 | ||
5249 | return (uentry_isValid (ce)); | |
5250 | } | |
5251 | # endif | |
5252 | ||
5253 | bool | |
5254 | usymtab_existsType (cstring k) | |
5255 | /*@globals globtab@*/ | |
5256 | { | |
5257 | uentry ce = usymtab_lookupAux (globtab, k); | |
5258 | ||
5259 | return (!(uentry_isUndefined (ce)) && !(uentry_isPriv (ce)) && uentry_isDatatype (ce)); | |
5260 | } | |
5261 | ||
5262 | bool | |
5263 | usymtab_existsTypeEither (cstring k) | |
5264 | /*@globals globtab@*/ | |
5265 | { | |
28bf4b0b | 5266 | uentry ce; |
5267 | ce = usymtab_lookupAux (globtab, k); | |
5268 | return (uentry_isValid (ce) && uentry_isDatatype (ce)); | |
616915dd | 5269 | } |
5270 | ||
5271 | bool | |
5272 | usymtab_existsStructTag (cstring k) /*@globals globtab@*/ | |
5273 | { | |
5274 | cstring sname = makeStruct (k); | |
5275 | uentry ce = usymtab_lookupAux (globtab, sname); | |
28bf4b0b | 5276 | cstring_free (sname); |
616915dd | 5277 | return (!(uentry_isUndefined (ce)) && !(uentry_isPriv (ce))); |
5278 | } | |
5279 | ||
5280 | bool | |
5281 | usymtab_existsUnionTag (cstring k) /*@globals globtab@*/ | |
5282 | { | |
5283 | cstring uname = makeUnion (k); | |
5284 | uentry ce = usymtab_lookupAux (globtab, uname); | |
5285 | ||
5286 | cstring_free (uname); | |
5287 | ||
5288 | return (!(uentry_isUndefined (ce)) && !(uentry_isPriv (ce))); | |
5289 | } | |
5290 | ||
5291 | bool | |
5292 | usymtab_existsEnumTag (cstring k) /*@globals globtab@*/ | |
5293 | { | |
5294 | cstring ename = makeEnum (k); | |
5295 | uentry ce = usymtab_lookupAux (globtab, ename); | |
5296 | ||
5297 | cstring_free (ename); | |
5298 | return (!(uentry_isUndefined (ce)) && !(uentry_isPriv (ce))); | |
5299 | } | |
5300 | ||
5301 | # ifndef NOLCL | |
5302 | bool usymtab_existsVar (cstring k) | |
5303 | /*@globals utab@*/ | |
5304 | { | |
5305 | uentry ce = usymtab_lookupSafe (k); | |
5306 | ||
5307 | return (!(uentry_isUndefined (ce)) && !(uentry_isPriv (ce)) && (uentry_isVar (ce))); | |
5308 | } | |
5309 | # endif | |
5310 | ||
5311 | /* | |
5312 | ** destructors | |
5313 | */ | |
5314 | ||
5315 | static void | |
5316 | refTable_free (/*@only@*/ /*@null@*/ refTable x, int nentries) | |
5317 | { | |
5318 | if (x != NULL) | |
5319 | { | |
5320 | int i; | |
5321 | ||
5322 | for (i = 0; i < nentries; i++) | |
5323 | { | |
5324 | sfree (x[i]); | |
5325 | } | |
5326 | ||
5327 | sfree (x); | |
5328 | } | |
5329 | } | |
5330 | ||
5331 | static void | |
5332 | usymtab_freeLevel (/*@notnull@*/ /*@only@*/ usymtab u) | |
5333 | /*@globals globtab, utab, filetab@*/ | |
5334 | { | |
5335 | int i; | |
5336 | ||
5337 | aliasTable_free (u->aliases); | |
28bf4b0b | 5338 | |
616915dd | 5339 | refTable_free (u->reftable, u->nentries); |
5340 | ||
5341 | if (u == filetab || u == globtab) | |
5342 | { | |
5343 | for (i = 0; i < u->nentries; i++) | |
5344 | { | |
5345 | uentry_freeComplete (u->entries[i]); | |
5346 | } | |
5347 | } | |
5348 | else | |
5349 | { | |
5350 | for (i = 0; i < u->nentries; i++) | |
5351 | { | |
5352 | uentry_free (u->entries[i]); | |
5353 | } | |
5354 | } | |
5355 | ||
5356 | guardSet_free (u->guards); | |
5357 | sfree (u->entries); | |
5358 | ||
5359 | if (u != globtab | |
5360 | && u != utab | |
5361 | && u != filetab) | |
5362 | { | |
28bf4b0b | 5363 | llassert (!cstringTable_isDefined (u->htable)); |
616915dd | 5364 | sfree (u); |
5365 | } | |
5366 | ||
5367 | /*@-mustfree@*/ | |
5368 | } /*@=mustfree@*/ | |
5369 | ||
5370 | static void | |
5371 | usymtab_freeAux (/*@only@*/ usymtab u) | |
5372 | /*@globals globtab, utab, filetab@*/ | |
5373 | /*@modifies u@*/ | |
5374 | { | |
5375 | while (u != GLOBAL_ENV) | |
5376 | { | |
5377 | usymtab t = u->env; | |
5378 | usymtab_freeLevel (u); | |
5379 | u = t; | |
5380 | /*@-branchstate@*/ | |
5381 | } | |
5382 | /*@=branchstate@*/ | |
5383 | } | |
5384 | ||
5385 | void usymtab_free () | |
5386 | /*@globals killed utab, globtab, filetab@*/ | |
5387 | /*@modifies utab@*/ | |
5388 | { | |
5389 | dbgfree = TRUE; | |
5390 | usymtab_freeAux (utab); | |
5391 | } | |
5392 | ||
5393 | static int usymtab_lexicalLevel (void) /*@globals utab@*/ | |
5394 | { | |
5395 | return (utab->lexlevel); | |
5396 | } | |
5397 | ||
5398 | bool usymtab_inGlobalScope () /*@globals utab, globtab@*/ | |
5399 | { | |
5400 | return (utab == globtab); | |
5401 | } | |
5402 | ||
5403 | bool usymtab_inFileScope () /*@globals utab@*/ | |
5404 | { | |
5405 | return (utab->lexlevel == fileScope); | |
5406 | } | |
5407 | ||
5408 | bool usymtab_inFunctionScope () /*@globals utab@*/ | |
5409 | { | |
5410 | return (utab->lexlevel == functionScope); | |
5411 | } | |
5412 | ||
5413 | # ifndef NOLCL | |
5414 | void | |
5415 | usymtab_replaceEntry (uentry s) | |
5416 | /*@globals utab, globtab@*/ | |
5417 | /*@modifies utab, s@*/ | |
5418 | { | |
5419 | usymtab_replaceEntryAux (utab, s); | |
5420 | } | |
5421 | # endif | |
5422 | ||
5423 | bool | |
5424 | usymtab_matchForwardStruct (usymId u1, usymId u2) | |
5425 | /*@globals globtab@*/ | |
5426 | { | |
5427 | uentry ue1 = usymtab_getTypeEntry (u1); | |
5428 | uentry ue2 = usymtab_getTypeEntry (u2); | |
5429 | ||
5430 | if (uentry_isAnyTag (ue2)) | |
5431 | { | |
5432 | ctype reptype = uentry_getType (ue1); | |
5433 | ||
5434 | if (ctype_isPointer (reptype)) | |
5435 | { | |
5436 | ctype repbase = ctype_getBaseType (reptype); | |
5437 | ||
5438 | if (ctype_isUA (repbase)) | |
5439 | { | |
5440 | typeId rtuid = ctype_typeId (repbase); | |
5441 | ||
5442 | if (u2 == rtuid) return TRUE; | |
5443 | ||
5444 | if (usymId_isValid (rtuid)) | |
5445 | { | |
5446 | reptype = uentry_getType (usymtab_getTypeEntry (rtuid)); | |
5447 | ||
5448 | return (ctype_isUA (reptype) && (u2 == (ctype_typeId (reptype)))); | |
5449 | } | |
5450 | } | |
5451 | } | |
5452 | } | |
5453 | ||
5454 | return FALSE; | |
5455 | } | |
5456 | ||
5457 | void usymtab_addGuards (guardSet guards) | |
5458 | /*@modifies utab@*/ | |
5459 | { | |
5460 | utab->guards = guardSet_union (utab->guards, guards); | |
5461 | } | |
5462 | ||
5463 | static bool usymtab_isGuardedAux (sRef s) | |
5464 | /*@globals utab@*/ | |
5465 | { | |
5466 | usymtab tab = utab; | |
5467 | sRef base = sRef_getRootBase (s); | |
5468 | int lowlevel = paramsScope; | |
5469 | int baselevel = sRef_lexLevel (base); | |
5470 | ||
5471 | if (sRef_isCvar (base)) | |
5472 | { | |
5473 | lowlevel = baselevel; | |
5474 | if (lowlevel < paramsScope) lowlevel = paramsScope; | |
5475 | } | |
5476 | ||
5477 | while (tab->lexlevel >= lowlevel) | |
5478 | { | |
2209bcb7 | 5479 | DPRINTF (("Is guarded? [%s] %s", |
5480 | guardSet_unparse (tab->guards), | |
5481 | sRef_unparseFull (s))); | |
5482 | ||
616915dd | 5483 | if (guardSet_isGuarded (tab->guards, s)) |
5484 | { | |
5485 | /* | |
5486 | if (!sRef_definitelyNull (s)) | |
5487 | { | |
5488 | sRef_setNotNull (s, fileloc_undefined); | |
5489 | } | |
5490 | */ | |
5491 | return TRUE; | |
5492 | } | |
5493 | ||
5494 | tab = usymtab_dropEnv (tab); | |
5495 | } | |
5496 | ||
5497 | return FALSE; | |
5498 | } | |
5499 | ||
5500 | void usymtab_unguard (sRef s) /*@modifies utab@*/ | |
5501 | { | |
5502 | usymtab tab = utab; | |
5503 | sRef base = sRef_getRootBase (s); | |
5504 | int lowlevel = paramsScope; | |
5505 | int baselevel = sRef_lexLevel (base); | |
5506 | ||
5507 | if (sRef_isCvar (base)) | |
5508 | { | |
5509 | lowlevel = baselevel; | |
5510 | if (lowlevel < paramsScope) lowlevel = paramsScope; | |
5511 | } | |
5512 | ||
5513 | while (tab->lexlevel >= lowlevel) | |
5514 | { | |
5515 | if (guardSet_isGuarded (tab->guards, s)) | |
5516 | { | |
5517 | guardSet_delete (tab->guards, s); | |
5518 | } | |
5519 | ||
5520 | tab = usymtab_dropEnv (tab); | |
5521 | } | |
5522 | } | |
5523 | ||
5524 | bool usymtab_isGuarded (sRef s) | |
5525 | { | |
2209bcb7 | 5526 | DPRINTF (("Is guarded? %s", sRef_unparseFull (s))); |
616915dd | 5527 | return (sRef_aliasCompleteSimplePred (usymtab_isGuardedAux, s)); |
5528 | } | |
5529 | ||
28bf4b0b | 5530 | bool usymtab_isDefinitelyNull (sRef s) |
616915dd | 5531 | { |
28bf4b0b | 5532 | return (sRef_aliasCheckSimplePred (usymtab_isDefinitelyNullAux, s)); |
616915dd | 5533 | } |
5534 | ||
28bf4b0b | 5535 | bool usymtab_isDefinitelyNullDeep (sRef s) |
616915dd | 5536 | { |
28bf4b0b | 5537 | return (sRef_deepPred (usymtab_isDefinitelyNull, s)); |
616915dd | 5538 | } |
5539 | ||
28bf4b0b | 5540 | static bool usymtab_isDefinitelyNullAux (sRef s) |
616915dd | 5541 | /*@globals utab@*/ |
5542 | { | |
5543 | usymtab tab = utab; | |
5544 | sRef base = sRef_getRootBase (s); | |
5545 | int lowlevel = paramsScope; | |
5546 | ||
5547 | if (sRef_isCvar (base)) | |
5548 | { | |
5549 | lowlevel = sRef_lexLevel (base); | |
5550 | if (lowlevel < paramsScope) lowlevel = paramsScope; | |
5551 | } | |
5552 | ||
5553 | while (tab->lexlevel >= lowlevel) | |
5554 | { | |
28bf4b0b | 5555 | if (guardSet_mustBeNull (tab->guards, s)) |
616915dd | 5556 | { |
5557 | return TRUE; | |
5558 | } | |
5559 | ||
5560 | while (tab->kind == US_CBRANCH) | |
5561 | { | |
5562 | tab = tab->env; | |
5563 | } | |
5564 | ||
5565 | llassert (usymtab_isDefined (tab)); | |
5566 | ||
5567 | if (tab->kind == US_FBRANCH) | |
5568 | { | |
5569 | tab = tab->env; | |
5570 | llassert (tab->kind == US_TBRANCH); | |
5571 | } | |
5572 | ||
5573 | tab = tab->env; | |
5574 | } | |
5575 | ||
5576 | return FALSE; | |
5577 | } | |
5578 | ||
5579 | void | |
5580 | usymtab_printGuards () | |
5581 | /*@globals utab, globtab@*/ | |
5582 | { | |
5583 | usymtab ttab = utab; | |
5584 | ||
5585 | while (ttab != globtab) | |
5586 | { | |
5587 | llmsg (message ("Guards [%d]: %q", ttab->lexlevel, | |
5588 | guardSet_unparse (ttab->guards))); | |
5589 | ttab = ttab->env; | |
5590 | } | |
5591 | } | |
5592 | ||
5593 | void | |
5594 | usymtab_displayAllUses () | |
5595 | /*@globals utab, globtab@*/ | |
5596 | { | |
5597 | usymtab copy; | |
5598 | ||
5599 | /* only in top scope */ | |
5600 | llassert (utab == globtab); | |
5601 | ||
5602 | /* need a copy, so order is not messed up by sort! */ | |
5603 | copy = usymtab_shallowCopy (globtab); | |
5604 | ||
5605 | qsort (copy->entries, (size_t)copy->nentries, | |
5606 | sizeof (*copy->entries), (int (*)(const void *, const void *)) uentry_xcompareuses); | |
5607 | ||
5608 | usymtab_entries (copy, ue) | |
5609 | { | |
37ae0b5e | 5610 | if (uentry_isValid (ue) && !uentry_isGlobalMarker (ue)) |
616915dd | 5611 | { |
5612 | filelocList uses = uentry_getUses (ue); | |
5613 | int size = filelocList_realSize (uses); | |
5614 | ||
5615 | if (fileloc_isDefined (uentry_whereDefined (ue)) | |
5616 | && !fileloc_isLib (uentry_whereDefined (ue)) | |
5617 | && (size > 0)) | |
5618 | { | |
28bf4b0b | 5619 | llmsg (message ("%q (%q), %d use%&:\n %q", |
616915dd | 5620 | uentry_getName (ue), |
5621 | fileloc_unparse (uentry_whereDefined (ue)), | |
5622 | size, filelocList_unparseUses (uses))); | |
5623 | } | |
5624 | } | |
5625 | } end_usymtab_entries; | |
5626 | ||
5627 | usymtab_shallowFree (copy); | |
5628 | } | |
5629 | ||
5630 | static /*@dependent@*/ /*@exposed@*/ usymtab | |
5631 | usymtab_getFileTab () | |
5632 | /*@globals filetab@*/ | |
5633 | { | |
5634 | llassert (filetab != NULL); | |
5635 | ||
5636 | return filetab; | |
5637 | } | |
5638 | ||
5639 | /*@only@*/ cstring | |
5640 | usymtab_unparseStack () | |
5641 | /*@globals utab@*/ | |
5642 | { | |
5643 | return (usymtab_unparseStackTab (utab)); | |
5644 | } | |
5645 | ||
5646 | static /*@only@*/ cstring | |
5647 | usymtab_unparseStackTab (usymtab t) | |
5648 | { | |
5649 | bool firstOne = TRUE; | |
5650 | cstring ret = cstring_makeLiteral ("["); | |
5651 | ||
5652 | while (t != GLOBAL_ENV) | |
5653 | { | |
5654 | if (firstOne) | |
5655 | { | |
5656 | ret = message ("%q %q", ret, usymtab_typeName (t)); | |
5657 | firstOne = FALSE; | |
5658 | } | |
5659 | else | |
5660 | { | |
5661 | ret = message ("%q, %q", ret, usymtab_typeName (t)); | |
5662 | } | |
5663 | t = t->env; | |
5664 | } | |
5665 | ||
5666 | ret = message ("%q ]", ret); | |
5667 | return ret; | |
5668 | } | |
5669 | ||
5670 | static /*@only@*/ cstring | |
5671 | usymtab_typeName (/*@notnull@*/ usymtab t) | |
5672 | { | |
5673 | switch (t->kind) | |
5674 | { | |
5675 | case US_GLOBAL: return cstring_makeLiteral ("global"); | |
5676 | case US_NORMAL: return cstring_makeLiteral ("normal"); | |
5677 | case US_TBRANCH: return cstring_makeLiteral ("true"); | |
5678 | case US_FBRANCH: return cstring_makeLiteral ("false"); | |
5679 | case US_CBRANCH: return cstring_makeLiteral ("case"); | |
5680 | case US_SWITCH: return cstring_makeLiteral ("switch"); | |
5681 | } | |
5682 | ||
5683 | BADEXIT; | |
5684 | } | |
5685 | ||
28bf4b0b | 5686 | void usymtab_addMustAlias (/*@exposed@*/ sRef s, /*@exposed@*/ sRef al) |
616915dd | 5687 | /*@modifies utab@*/ |
5688 | { | |
28bf4b0b | 5689 | if (!sRef_similar (s, al)) |
616915dd | 5690 | { |
28bf4b0b | 5691 | usymtab_addForceMustAlias (s, al); |
616915dd | 5692 | } |
5693 | } | |
5694 | ||
5695 | /* | |
5696 | ** Same as usymtab_addMustAlias, except does not check sRef_isSimilar. | |
5697 | */ | |
5698 | ||
28bf4b0b | 5699 | void usymtab_addForceMustAlias (/*@exposed@*/ sRef s, /*@exposed@*/ sRef al) |
616915dd | 5700 | /*@modifies utab@*/ |
5701 | { | |
393e573f | 5702 | /* evans 2002-03-3: was sRef_isMeaningful -- but we need to keep aliases for new storage also! */ |
616915dd | 5703 | if (sRef_isMeaningful (s) |
5704 | && sRef_isMeaningful (al) | |
5705 | && !(sRef_isConst (s) || sRef_isConst (al)) | |
5706 | && !(sRef_isAddress (al) && sRef_isDirectParam (sRef_getBase (al)))) | |
5707 | { | |
5708 | utab->aliases = aliasTable_addMustAlias (utab->aliases, s, al); | |
5709 | DPRINTF (("Must alias: %s", aliasTable_unparse (utab->aliases))); | |
5710 | ||
5711 | /* | |
5712 | ** for local variable, aliasing is symmetric | |
5713 | */ | |
5714 | ||
5715 | if (sRef_isLocalVar (s) && sRef_isLocalVar (al)) | |
5716 | { | |
5717 | utab->aliases = aliasTable_addMustAlias (utab->aliases, al, s); | |
5718 | } | |
5719 | } | |
5720 | else | |
5721 | { | |
393e573f | 5722 | DPRINTF (("Not aliasing! %s / %s", sRef_unparseFull (s), sRef_unparseFull (al))); |
5723 | DPRINTF (("meaningful: %d %d", sRef_isMeaningful (s), sRef_isMeaningful (al))); | |
616915dd | 5724 | } |
5725 | } | |
5726 | ||
393e573f | 5727 | void usymtab_addReallyForceMustAlias (/*@exposed@*/ sRef s, /*@exposed@*/ sRef al) |
5728 | /*@modifies utab@*/ | |
5729 | { | |
5730 | utab->aliases = aliasTable_addMustAlias (utab->aliases, s, al); | |
5731 | } | |
5732 | ||
616915dd | 5733 | void usymtab_clearAlias (sRef s) |
5734 | /*@modifies utab, s@*/ | |
5735 | { | |
5736 | ||
5737 | aliasTable_clearAliases (utab->aliases, s); | |
5738 | } | |
5739 | ||
5740 | sRefSet usymtab_allAliases (sRef s) | |
5741 | /*@globals utab@*/ | |
5742 | { | |
393e573f | 5743 | if (sRef_isSomewhatMeaningful (s)) |
616915dd | 5744 | { |
5745 | sRefSet ret; | |
616915dd | 5746 | |
5747 | ret = sRefSet_unionFree (aliasTable_aliasedBy (utab->aliases, s), | |
5748 | aliasTable_canAlias (utab->aliases, s)); | |
28bf4b0b | 5749 | return (ret); |
616915dd | 5750 | } |
5751 | else | |
5752 | { | |
28bf4b0b | 5753 | DPRINTF (("NOT A MEANINGFUL SREF!")); |
616915dd | 5754 | return sRefSet_undefined; |
5755 | } | |
5756 | } | |
5757 | ||
5758 | /*@only@*/ sRefSet usymtab_canAlias (sRef s) | |
28bf4b0b | 5759 | /*@globals utab@*/ |
616915dd | 5760 | { |
393e573f | 5761 | if (sRef_isSomewhatMeaningful (s)) |
616915dd | 5762 | { |
5763 | sRefSet res = aliasTable_canAlias (utab->aliases, s); | |
616915dd | 5764 | return res; |
5765 | } | |
28bf4b0b | 5766 | |
616915dd | 5767 | return sRefSet_undefined; |
5768 | } | |
5769 | ||
5770 | /*@only@*/ sRefSet usymtab_aliasedBy (sRef s) | |
28bf4b0b | 5771 | /*@globals utab@*/ |
616915dd | 5772 | { |
5773 | return (aliasTable_aliasedBy (utab->aliases, s)); | |
5774 | } | |
5775 | ||
5776 | /*@only@*/ cstring usymtab_unparseAliases () | |
5777 | /*@globals utab@*/ | |
5778 | { | |
5779 | return (aliasTable_unparse (utab->aliases)); | |
5780 | } | |
5781 | ||
5782 | /* | |
5783 | ** Debugging routines: | |
5784 | ** okay to leak storage here, only for debugging | |
5785 | */ | |
5786 | ||
5787 | /*@-mustfree@*/ | |
5788 | ||
5789 | void | |
5790 | usymtab_printOut (void) | |
5791 | /*@globals utab@*/ | |
5792 | { | |
5793 | int i; | |
5794 | usymtab s = utab; | |
5795 | int depth = 0; | |
5796 | char *ind = mstring_copy (" "); | |
5797 | ||
80489f0a | 5798 | fprintf (g_warningstream, "<<< [symbol table] >>>\n"); |
616915dd | 5799 | |
5800 | while (s != GLOBAL_ENV && s->env != GLOBAL_ENV) | |
5801 | { | |
5802 | cstring tname = usymtab_typeName (s); | |
5803 | ||
5804 | if (depth < 5) | |
5805 | { | |
5806 | ind[depth * 3 + 1] = '\0'; | |
5807 | } | |
5808 | ||
80489f0a | 5809 | fprintf (g_warningstream, "level: %d (%s)\n", s->lexlevel, |
616915dd | 5810 | cstring_toCharsSafe (tname)); |
5811 | ||
5812 | cstring_free (tname); | |
5813 | ||
5814 | for (i = 0; i < s->nentries; i++) | |
5815 | { | |
5816 | cstring us = uentry_unparseFull (s->entries[i]); | |
80489f0a | 5817 | fprintf (g_warningstream, "%s\n", cstring_toCharsSafe (us)); |
616915dd | 5818 | cstring_free (us); |
5819 | } | |
5820 | ||
5821 | if (s->reftable != NULL && s->nentries > 0) | |
5822 | { | |
80489f0a | 5823 | fprintf (g_warningstream, "\t<< Ref table >>\n"); |
616915dd | 5824 | |
5825 | for (i = 0; i < s->nentries; i++) | |
5826 | { | |
80489f0a | 5827 | fprintf (g_warningstream, "\t%s %3d: %d, %d\n", ind, i, |
616915dd | 5828 | s->reftable[i]->level, |
5829 | s->reftable[i]->index); | |
5830 | } | |
5831 | } | |
5832 | ||
5833 | ind[depth * 3 + 1] = ' '; | |
5834 | depth++; | |
5835 | s = s->env; | |
5836 | } | |
80489f0a | 5837 | fprintf (g_warningstream, "<<< end usymtab >>>\n"); |
616915dd | 5838 | mstring_free (ind); |
5839 | return; | |
5840 | } | |
5841 | ||
5842 | void | |
5843 | usymtab_printTypes () | |
5844 | /*@globals globtab@*/ | |
5845 | { | |
5846 | usymtab_printAllAux (globtab); | |
5847 | } | |
5848 | ||
5849 | void | |
5850 | usymtab_printAll (void) | |
5851 | /*@globals utab@*/ | |
5852 | { | |
5853 | usymtab_printAllAux (utab); | |
5854 | } | |
5855 | ||
5856 | static void | |
5857 | usymtab_printAllAux (usymtab s) | |
80489f0a | 5858 | /*@modifies g_warningstream@*/ |
616915dd | 5859 | { |
5860 | int i; | |
5861 | int depth = 0; | |
5862 | char *ind = mstring_copy (" "); | |
5863 | ||
5864 | printf ("[[[ usymtab ]]]"); | |
5865 | ||
5866 | while (s != GLOBAL_ENV) | |
5867 | { | |
5868 | if (depth < 5) | |
5869 | ind[depth * 3 + 1] = '\0'; | |
5870 | ||
5871 | if (s->env == GLOBAL_ENV) | |
5872 | { | |
5873 | int looplow; | |
5874 | ||
5875 | printf ("level: %d / break: %s / exit: %s\n", s->lexlevel, | |
5876 | cstring_toCharsSafe (bool_unparse (s->mustBreak)), | |
5877 | cstring_toCharsSafe (exitkind_unparse (s->exitCode))); | |
5878 | ||
5879 | looplow = 0; | |
5880 | ||
5881 | for (i = looplow; i < s->nentries; i++) | |
5882 | { | |
5883 | printf ("%s%3d. %s\n", ind, i, | |
5884 | cstring_toCharsSafe (uentry_unparseFull (s->entries[i]))); | |
5885 | } | |
5886 | } | |
5887 | else | |
5888 | { | |
5889 | printf ("level: %d / break: %s / exit: %s\n", s->lexlevel, | |
5890 | cstring_toCharsSafe (bool_unparse (s->mustBreak)), | |
5891 | cstring_toCharsSafe (exitkind_unparse (s->exitCode))); | |
5892 | ||
5893 | for (i = 0; i < s->nentries; i++) | |
5894 | { | |
5895 | printf ("%s%3d %s\n", ind, i, | |
5896 | cstring_toCharsSafe (uentry_unparseFull (s->entries[i]))); | |
5897 | } | |
5898 | } | |
5899 | ||
5900 | ind[depth * 3 + 1] = ' '; | |
5901 | depth++; | |
5902 | s = s->env; | |
5903 | } | |
5904 | printf ("----------\n"); | |
5905 | } | |
5906 | ||
5907 | void | |
5908 | usymtab_printComplete () | |
5909 | /*@globals utab@*/ | |
5910 | { | |
5911 | int i; | |
5912 | int depth = 0; | |
5913 | char *ind = mstring_copy (" "); | |
5914 | usymtab s = utab; | |
5915 | ||
5916 | while (s != GLOBAL_ENV) | |
5917 | { | |
5918 | if (depth < 5) | |
5919 | { | |
5920 | ind[depth * 3 + 1] = '\0'; | |
5921 | } | |
5922 | ||
5923 | if (s->env == GLOBAL_ENV) | |
5924 | { | |
5925 | int looplow; | |
5926 | ||
5927 | printf ("level: %d\n", s->lexlevel); | |
5928 | ||
5929 | looplow = 0; | |
5930 | ||
5931 | for (i = looplow; i < s->nentries; i++) | |
5932 | { | |
5933 | printf ("%s%3d %s\n", ind, i, | |
02b84d4b | 5934 | cstring_toCharsSafe (uentry_unparseFull (s->entries[i]))); |
616915dd | 5935 | } |
5936 | } | |
5937 | else | |
5938 | { | |
5939 | printf ("level: %d\n", s->lexlevel); | |
5940 | for (i = 0; i < s->nentries; i++) | |
5941 | { | |
5942 | printf ("%s%3d %s\n", ind, i, | |
02b84d4b | 5943 | cstring_toCharsSafe (uentry_unparseFull (s->entries[i]))); |
616915dd | 5944 | } |
5945 | } | |
5946 | ||
5947 | ind[depth * 3 + 1] = ' '; | |
5948 | depth++; | |
5949 | s = s->env; | |
5950 | } | |
5951 | ||
5952 | printf ("----------\n"); | |
5953 | mstring_free (ind); | |
5954 | } | |
5955 | ||
3e3ec469 | 5956 | # ifdef S_SPLINT_S |
616915dd | 5957 | static /*@only@*/ cstring /*@unused@*/ |
5958 | usymtab_unparseLocalAux (/*@notnull@*/ usymtab s) | |
5959 | { | |
5960 | cstring c = message ("lexlevel: %d\n", s->lexlevel); | |
5961 | int i; | |
5962 | ||
5963 | for (i = 0; i < s->nentries; i++) | |
5964 | { | |
5965 | c = message ("%q\n%q", c, uentry_unparseFull (s->entries[i])); | |
5966 | } | |
5967 | ||
5968 | c = message ("%q\n=========", c); | |
5969 | return (c); | |
5970 | } | |
5971 | ||
5972 | static cstring /*@unused@*/ /*@only@*/ | |
5973 | usymtab_unparseLocalList (/*@notnull@*/ usymtab s) | |
5974 | { | |
5975 | cstring c = message ("[%d/%s/%s] ", s->lexlevel, | |
5976 | bool_unparse (s->mustBreak), | |
5977 | exitkind_unparse (s->exitCode)); | |
5978 | int i; | |
5979 | ||
5980 | for (i = 0; i < s->nentries; i++) | |
5981 | { | |
5982 | sRef sr = uentry_getSref (s->entries[i]); | |
5983 | ||
5984 | if (i == 0) | |
5985 | { | |
5986 | c = message ("%q: %q [%b]", c, uentry_getName (s->entries[i]), | |
5987 | sRef_isStateDefined (sr)); | |
5988 | } | |
5989 | else | |
5990 | { | |
5991 | c = message ("%q, %q [%b]", c, uentry_getName (s->entries[i]), | |
5992 | sRef_isStateDefined (sr)); | |
5993 | } | |
5994 | ||
5995 | } | |
5996 | ||
5997 | return (c); | |
5998 | } | |
8250fa4a | 5999 | # endif |
616915dd | 6000 | |
6001 | void | |
6002 | usymtab_printLocal (void) | |
6003 | /*@globals utab@*/ | |
6004 | { | |
6005 | int i; | |
6006 | usymtab s = utab; | |
6007 | ||
6008 | printf ("lexlevel: %d\n", s->lexlevel); | |
6009 | ||
6010 | for (i = 0; i < s->nentries; i++) | |
6011 | { | |
6012 | printf ("%s\n", cstring_toCharsSafe (uentry_unparseFull (s->entries[i]))); | |
6013 | } | |
6014 | ||
6015 | while (s->lexlevel > 1) | |
6016 | { | |
6017 | s = s->env; | |
6018 | } | |
6019 | ||
6020 | llassert (usymtab_isDefined (s)); | |
6021 | ||
6022 | printf ("Params:\n"); | |
6023 | ||
6024 | for (i = 0; i < s->nentries; i++) | |
6025 | { | |
6026 | printf ("%d: %s\n", i, | |
6027 | cstring_toCharsSafe (uentry_unparseFull (s->entries[i]))); | |
6028 | } | |
6029 | } | |
6030 | /*@=mustfree@*/ | |
6031 | ||
6032 | static bool checkDistinctExternalName (uentry e) | |
6033 | /*@globals globtab@*/ | |
80489f0a | 6034 | /*@modifies *g_warningstream@*/ |
616915dd | 6035 | { |
abd7f895 | 6036 | size_t checklen = size_fromInt (context_getValue (FLG_EXTERNALNAMELEN)); |
616915dd | 6037 | bool ignorecase = context_getFlag (FLG_EXTERNALNAMECASEINSENSITIVE); |
6038 | bool gotone = FALSE; | |
6039 | bool extras = FALSE; | |
6040 | bool hasError = FALSE; | |
6041 | cstring name = uentry_rawName (e); | |
6042 | usymtab st = globtab; | |
6043 | ||
6044 | if (checklen == 0) | |
6045 | { | |
6046 | ; | |
6047 | } | |
6048 | else | |
6049 | { | |
6050 | if (uentry_isAnyTag (e)) | |
6051 | { | |
6052 | checklen++; /* the tag marker doesn't count */ | |
6053 | } | |
6054 | } | |
6055 | ||
6056 | usymtab_entries (st, oe) | |
6057 | { | |
6058 | if (uentry_sameObject (oe, e)) | |
6059 | { | |
6060 | continue; | |
6061 | } | |
6062 | ||
6063 | if (checklen == 0) | |
6064 | { | |
6065 | if (cstring_equalCaseInsensitive (uentry_rawName (oe), name)) | |
6066 | { | |
6067 | if (gotone) | |
6068 | { | |
6069 | extras = TRUE; | |
6070 | break; | |
6071 | } | |
6072 | ||
6073 | if (optgenerror | |
6074 | (FLG_DISTINCTEXTERNALNAMES, | |
6075 | message | |
6076 | ("External identifier %q is not distinguishable from %q " | |
6077 | "because alphabetical case is ignored", | |
6078 | uentry_getName (e), | |
6079 | uentry_getName (oe)), | |
6080 | uentry_whereLast (e))) | |
6081 | { | |
6082 | uentry_showWhereAny (oe); | |
6083 | uentry_setHasNameError (oe); | |
6084 | gotone = TRUE; | |
6085 | } | |
6086 | } | |
6087 | } | |
6088 | else | |
6089 | { | |
6090 | if (ignorecase) | |
6091 | { | |
6092 | if (cstring_equalLenCaseInsensitive (uentry_rawName (oe), | |
6093 | name, checklen)) | |
6094 | { | |
6095 | if (gotone) | |
6096 | { | |
6097 | extras = TRUE; | |
6098 | break; | |
6099 | } | |
6100 | ||
6101 | if (cstring_equalLen (uentry_rawName (oe), name, checklen)) | |
6102 | { | |
6103 | if (optgenerror | |
6104 | (FLG_DISTINCTEXTERNALNAMES, | |
6105 | /*@-sefparams@*/ | |
6106 | message | |
6107 | ("External identifier %q is not distinguishable from %q " | |
6108 | "in the first %d characters (%q)", | |
6109 | uentry_getName (e), | |
6110 | uentry_getName (oe), | |
abd7f895 | 6111 | size_toInt (checklen), |
616915dd | 6112 | cstring_clip (uentry_getName (e), checklen)), |
6113 | /*@=sefparams@*/ | |
6114 | uentry_whereLast (e))) | |
6115 | { | |
6116 | uentry_showWhereAny (oe); | |
6117 | uentry_setHasNameError (oe); | |
6118 | gotone = TRUE; | |
6119 | } | |
6120 | } | |
6121 | else | |
6122 | { | |
6123 | if (gotone) | |
6124 | { | |
6125 | extras = TRUE; | |
6126 | break; | |
6127 | } | |
6128 | ||
6129 | if (optgenerror | |
6130 | (FLG_DISTINCTEXTERNALNAMES, | |
6131 | message | |
6132 | ("External identifier %q is not distinguishable from %q " | |
6133 | "in the first %d characters because alphabetical case " | |
6134 | "is ignored", | |
6135 | uentry_getName (e), | |
6136 | uentry_getName (oe), | |
abd7f895 | 6137 | size_toInt (checklen)), |
616915dd | 6138 | uentry_whereLast (e))) |
6139 | { | |
6140 | uentry_showWhereAny (oe); | |
6141 | uentry_setHasNameError (oe); | |
6142 | gotone = TRUE; | |
6143 | } | |
6144 | } | |
6145 | } | |
6146 | } | |
6147 | else if (cstring_equalLen (uentry_rawName (oe), name, checklen)) | |
6148 | { | |
6149 | if (gotone) | |
6150 | { | |
6151 | extras = TRUE; | |
6152 | break; | |
6153 | } | |
6154 | ||
6155 | if (optgenerror | |
6156 | (FLG_DISTINCTEXTERNALNAMES, | |
6157 | /*@-sefparams@*/ | |
6158 | message | |
6159 | ("External identifier %q is not distinguishable from %q " | |
6160 | "in the first %d characters (%q)", | |
6161 | uentry_getName (e), | |
6162 | uentry_getName (oe), | |
abd7f895 | 6163 | size_toInt (checklen), |
616915dd | 6164 | cstring_clip (uentry_getName (e), checklen)), |
6165 | /*@=sefparams@*/ | |
6166 | uentry_whereLast (e))) | |
6167 | { | |
6168 | uentry_showWhereAny (oe); | |
6169 | uentry_setHasNameError (oe); | |
6170 | gotone = TRUE; | |
6171 | } | |
6172 | } | |
6173 | else | |
6174 | { | |
6175 | ; /* okay */ | |
6176 | } | |
6177 | } | |
6178 | } end_usymtab_entries ; | |
6179 | ||
6180 | hasError = gotone; | |
6181 | ||
6182 | if (extras) | |
6183 | { | |
6184 | llgenindentmsgnoloc | |
6185 | (cstring_makeLiteral ("One or more additional " | |
6186 | "indistinguishable external " | |
6187 | "names not reported")); | |
6188 | } | |
6189 | ||
6190 | return hasError; | |
6191 | } | |
6192 | ||
6193 | static bool checkDistinctInternalName (uentry e) | |
6194 | /*@globals utab@*/ | |
80489f0a | 6195 | /*@modifies *g_warningstream@*/ |
616915dd | 6196 | { |
6197 | usymtab ttab = utab; | |
6198 | cstring name = uentry_rawName (e); | |
abd7f895 | 6199 | size_t numchars = size_fromInt (context_getValue (FLG_INTERNALNAMELEN)); |
616915dd | 6200 | bool caseinsensitive = context_getFlag (FLG_INTERNALNAMECASEINSENSITIVE); |
6201 | bool lookalike = context_getFlag (FLG_INTERNALNAMELOOKALIKE); | |
6202 | ||
6203 | if (uentry_isAnyTag (e) && (numchars != 0)) | |
6204 | { | |
6205 | numchars++; /* the tag marker doesn't count */ | |
6206 | } | |
6207 | ||
6208 | while (usymtab_isDefined (ttab)) | |
6209 | { | |
6210 | usymtab_entries (ttab, oe) | |
6211 | { | |
6212 | if (uentry_sameObject (oe, e)) | |
6213 | { | |
6214 | /*@innercontinue@*/ continue; | |
6215 | } | |
6216 | ||
6217 | switch (cstring_genericEqual | |
6218 | (name, uentry_rawName (oe), | |
6219 | numchars, caseinsensitive, lookalike)) | |
6220 | { | |
6221 | case CGE_DISTINCT: /* okay */ | |
6222 | /*@switchbreak@*/ | |
6223 | break; | |
6224 | case CGE_SAME: | |
6225 | if (cstring_equal (name, uentry_rawName (oe))) | |
6226 | { | |
6227 | ; /* got a shadow error */ | |
6228 | } | |
6229 | else | |
6230 | { | |
6231 | if (optgenerror | |
6232 | (FLG_DISTINCTINTERNALNAMES, | |
6233 | /*@-sefparams@*/ | |
6234 | message | |
6235 | ("Internal identifier %q is not distinguishable from %q " | |
6236 | "in the first %d characters (%q)", | |
6237 | uentry_getName (e), | |
6238 | uentry_getName (oe), | |
abd7f895 | 6239 | size_toInt (numchars), |
616915dd | 6240 | cstring_clip (uentry_getName (e), numchars)), |
6241 | /*@=sefparams@*/ | |
6242 | uentry_whereLast (e))) | |
6243 | { | |
6244 | uentry_showWhereAny (oe); | |
6245 | uentry_setHasNameError (oe); | |
6246 | return TRUE; | |
6247 | } | |
6248 | } | |
6249 | /*@switchbreak@*/ | |
6250 | break; | |
6251 | case CGE_CASE: | |
abd7f895 | 6252 | if (numchars == 0 || (cstring_length (name) <= numchars)) |
616915dd | 6253 | { |
6254 | if (optgenerror | |
6255 | (FLG_DISTINCTINTERNALNAMES, | |
6256 | message | |
6257 | ("Internal identifier %q is not distinguishable from %q " | |
6258 | "without case sensitivity", | |
6259 | uentry_getName (e), | |
6260 | uentry_getName (oe)), | |
6261 | uentry_whereLast (e))) | |
6262 | { | |
6263 | uentry_showWhereAny (oe); | |
6264 | uentry_setHasNameError (oe); | |
6265 | return TRUE; | |
6266 | } | |
6267 | } | |
6268 | else | |
6269 | { | |
6270 | if (optgenerror | |
6271 | (FLG_DISTINCTINTERNALNAMES, | |
6272 | message | |
6273 | ("Internal identifier %q is not distinguishable from %q " | |
6274 | "in the first %d characters without case sensitivity", | |
6275 | uentry_getName (e), | |
6276 | uentry_getName (oe), | |
abd7f895 | 6277 | size_toInt (numchars)), |
616915dd | 6278 | uentry_whereLast (e))) |
6279 | { | |
6280 | uentry_showWhereAny (oe); | |
6281 | uentry_setHasNameError (oe); | |
6282 | return TRUE; | |
6283 | } | |
6284 | } | |
6285 | /*@switchbreak@*/ | |
6286 | break; | |
6287 | case CGE_LOOKALIKE: | |
6288 | if (numchars == 0 | |
6289 | || (cstring_length (name) <= numchars)) | |
6290 | { | |
6291 | if (optgenerror | |
6292 | (FLG_DISTINCTINTERNALNAMES, | |
6293 | message | |
6294 | ("Internal identifier %q is not distinguishable from %q " | |
6295 | "except by lookalike characters", | |
6296 | uentry_getName (e), | |
6297 | uentry_getName (oe)), | |
6298 | uentry_whereLast (e))) | |
6299 | { | |
6300 | uentry_showWhereAny (oe); | |
6301 | uentry_setHasNameError (oe); | |
6302 | return TRUE; | |
6303 | } | |
6304 | } | |
6305 | else | |
6306 | { | |
6307 | if (optgenerror | |
6308 | (FLG_DISTINCTINTERNALNAMES, | |
6309 | message | |
6310 | ("Internal identifier %q is not distinguishable from %q " | |
6311 | "in the first %d characters except by lookalike characters", | |
6312 | uentry_getName (e), | |
6313 | uentry_getName (oe), | |
abd7f895 | 6314 | size_toInt (numchars)), |
616915dd | 6315 | uentry_whereLast (e))) |
6316 | { | |
6317 | uentry_showWhereAny (oe); | |
6318 | uentry_setHasNameError (oe); | |
6319 | return TRUE; | |
6320 | } | |
6321 | } | |
6322 | } | |
6323 | } end_usymtab_entries ; | |
6324 | ||
6325 | ttab = ttab->env; | |
6326 | } | |
6327 | ||
6328 | return FALSE; | |
6329 | } | |
6330 | ||
6331 | void usymtab_checkDistinctName (uentry e, int scope) | |
6332 | /*@globals utab, globtab@*/ | |
6333 | { | |
6334 | bool hasError = FALSE; | |
6335 | fileloc where = uentry_whereLast (e); | |
6336 | ||
6337 | if (!fileloc_isPreproc (where) && !fileloc_isBuiltin (where)) | |
6338 | { | |
6339 | if (scope == globScope) | |
6340 | { | |
6341 | if (context_getFlag (FLG_DISTINCTEXTERNALNAMES)) | |
6342 | { | |
6343 | hasError = checkDistinctExternalName (e); | |
6344 | } | |
6345 | } | |
6346 | ||
6347 | if (!hasError && context_getFlag (FLG_DISTINCTINTERNALNAMES)) | |
6348 | { | |
6349 | hasError = checkDistinctInternalName (e); | |
6350 | } | |
6351 | } | |
6352 | ||
6353 | if (hasError) | |
6354 | { | |
28bf4b0b | 6355 | uentry_setHasNameError (e); |
616915dd | 6356 | } |
6357 | } | |
6358 | ||
28bf4b0b | 6359 | /*@exposed@*/ sRef usymtab_lookupGlobalMarker (void) /*@globals utab@*/ |
6360 | { | |
6361 | uentry ue; | |
6362 | ||
6363 | ue = usymtab_lookupAux (utab, GLOBAL_MARKER_NAME); | |
6364 | llassert (uentry_isValid (ue)); | |
6365 | ||
6366 | return uentry_getSref (ue); | |
6367 | } | |
6368 | ||
6483a926 | 6369 | |
6370 | # ifdef DEBUGSPLINT | |
6371 | /* | |
6372 | ** For debugging only | |
6373 | */ | |
6374 | ||
6375 | void | |
6376 | usymtab_checkAllValid () /*@globals utab@*/ | |
6377 | { | |
6378 | usymtab tab = utab; | |
6379 | ||
6380 | while (tab != GLOBAL_ENV) | |
6381 | { | |
6382 | int i; | |
6383 | ||
6384 | for (i = 0; i < utab->nentries; i++) | |
6385 | { | |
6386 | uentry e = utab->entries[i]; | |
6387 | ||
6388 | uentry_checkValid (e); | |
6389 | } | |
6390 | ||
6391 | aliasTable_checkValid (tab->aliases); | |
6392 | tab = tab->env; | |
6393 | } | |
6394 | } | |
6395 | # endif | |
6396 | ||
6397 | ||
6398 | ||
6399 | ||
6400 | ||
6401 |