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65f973be | 1 | /* |
11db3170 | 2 | ** Splint - annotation-assisted static program checker |
c59f5181 | 3 | ** Copyright (C) 1994-2003 University of Virginia, |
65f973be | 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 |
65f973be | 23 | */ |
24 | ||
616915dd | 25 | /* |
4ab867d6 | 26 | ** constraint.c |
616915dd | 27 | */ |
28 | ||
b7b694d6 | 29 | /* #define DEBUGPRINT 1 */ |
616915dd | 30 | |
31 | # include <ctype.h> /* for isdigit */ | |
1b8ae690 | 32 | # include "splintMacros.nf" |
616915dd | 33 | # include "basic.h" |
34 | # include "cgrammar.h" | |
35 | # include "cgrammar_tokens.h" | |
f0171cff | 36 | |
616915dd | 37 | # include "exprChecks.h" |
616915dd | 38 | # include "exprNodeSList.h" |
616915dd | 39 | |
d46ce6a4 | 40 | |
28bf4b0b | 41 | static /*@only@*/ cstring constraint_printDetailedPostCondition (/*@observer@*/ /*@temp@*/ constraint p_c); |
2934b455 | 42 | |
43 | ||
ccf0a4a8 | 44 | static /*@notnull@*/ /*@special@*/ constraint constraint_makeNew (void) |
45 | /*@post:isnull result->or, result->orig, result->generatingExpr, result->fcnPre @*/ | |
46 | /*@defines result->or, result->generatingExpr, result->orig, result->fcnPre @*/; | |
4ab867d6 | 47 | |
920a3797 | 48 | static void |
49 | advanceField (char **s) | |
50 | { | |
28bf4b0b | 51 | reader_checkChar (s, '@'); |
920a3797 | 52 | } |
53 | ||
15b3d2b2 | 54 | # if 0 |
28bf4b0b | 55 | static constraint makeConstraintParse2 (constraintExpr l, lltok relOp, exprNode cconstant) |
616915dd | 56 | { |
57 | char *t; | |
58 | int c; | |
59 | constraint ret; | |
ccf0a4a8 | 60 | ret = constraint_makeNew (); |
bb7c2085 | 61 | llassert (constraintExpr_isDefined (l)); |
d46ce6a4 | 62 | |
616915dd | 63 | ret->lexpr = constraintExpr_copy (l); |
2934b455 | 64 | |
616915dd | 65 | |
66 | if (relOp.tok == GE_OP) | |
67 | ret->ar = GTE; | |
68 | else if (relOp.tok == LE_OP) | |
69 | ret->ar = LTE; | |
70 | else if (relOp.tok == EQ_OP) | |
71 | ret->ar = EQ; | |
72 | else | |
bb7c2085 | 73 | llfatalbug (message ("Unsupported relational operator")); |
616915dd | 74 | |
75 | ||
bb7c2085 | 76 | t = cstring_toCharsSafe (exprNode_unparse (cconstant)); |
77 | c = atoi ( t); | |
616915dd | 78 | ret->expr = constraintExpr_makeIntLiteral (c); |
79 | ||
80 | ret->post = TRUE; | |
bb7c2085 | 81 | DPRINTF (("GENERATED CONSTRAINT:")); |
82 | DPRINTF ((message ("%s", constraint_print (ret)))); | |
616915dd | 83 | return ret; |
84 | } | |
15b3d2b2 | 85 | # endif |
616915dd | 86 | |
c3e695ff | 87 | bool constraint_same (constraint c1, constraint c2) |
90bc41f7 | 88 | { |
15b3d2b2 | 89 | llassert (c1 != NULL); |
90 | llassert (c2 != NULL); | |
90bc41f7 | 91 | |
15b3d2b2 | 92 | if (c1->ar != c2->ar) |
93 | { | |
94 | return FALSE; | |
95 | } | |
96 | ||
bb7c2085 | 97 | if (!constraintExpr_similar (c1->lexpr, c2->lexpr)) |
15b3d2b2 | 98 | { |
99 | return FALSE; | |
100 | } | |
90bc41f7 | 101 | |
bb7c2085 | 102 | if (!constraintExpr_similar (c1->expr, c2->expr)) |
15b3d2b2 | 103 | { |
104 | return FALSE; | |
105 | } | |
90bc41f7 | 106 | |
107 | return TRUE; | |
108 | } | |
616915dd | 109 | |
110 | constraint makeConstraintParse3 (constraintExpr l, lltok relOp, constraintExpr r) | |
111 | { | |
112 | constraint ret; | |
bb7c2085 | 113 | ret = constraint_makeNew (); |
114 | llassert (constraintExpr_isDefined (l)); | |
616915dd | 115 | |
116 | ret->lexpr = constraintExpr_copy (l); | |
616915dd | 117 | |
80489f0a | 118 | if (lltok_getTok (relOp) == GE_OP) |
119 | { | |
616915dd | 120 | ret->ar = GTE; |
80489f0a | 121 | } |
122 | else if (lltok_getTok (relOp) == LE_OP) | |
123 | { | |
124 | ret->ar = LTE; | |
125 | } | |
126 | else if (lltok_getTok (relOp) == EQ_OP) | |
127 | { | |
128 | ret->ar = EQ; | |
129 | } | |
616915dd | 130 | else |
80489f0a | 131 | llfatalbug ( message ("Unsupported relational operator")); |
616915dd | 132 | |
133 | ret->expr = constraintExpr_copy (r); | |
134 | ||
135 | ret->post = TRUE; | |
90bc41f7 | 136 | |
bb7c2085 | 137 | ret->orig = constraint_copy (ret); |
90bc41f7 | 138 | |
139 | ret = constraint_simplify (ret); | |
b7b694d6 | 140 | /* ret->orig = ret; */ |
141 | ||
bb7c2085 | 142 | DPRINTF (("GENERATED CONSTRAINT:")); |
143 | DPRINTF ((message ("%s", constraint_print (ret)))); | |
616915dd | 144 | return ret; |
145 | } | |
146 | ||
28bf4b0b | 147 | constraint constraint_copy (/*@temp@*/ /*@observer@*/ constraint c) |
616915dd | 148 | { |
149 | constraint ret; | |
90bc41f7 | 150 | |
bb7c2085 | 151 | llassert (constraint_isDefined (c)); |
b7b694d6 | 152 | |
bb7c2085 | 153 | ret = constraint_makeNew (); |
616915dd | 154 | ret->lexpr = constraintExpr_copy (c->lexpr); |
155 | ret->ar = c->ar; | |
156 | ret->expr = constraintExpr_copy (c->expr); | |
157 | ret->post = c->post; | |
795e7f34 | 158 | /*@-assignexpose@*/ |
28bf4b0b | 159 | ret->generatingExpr = c->generatingExpr; |
795e7f34 | 160 | /*@=assignexpose@*/ |
9280addf | 161 | |
616915dd | 162 | /*@i33 fix this*/ |
163 | if (c->orig != NULL) | |
164 | ret->orig = constraint_copy (c->orig); | |
165 | else | |
166 | ret->orig = NULL; | |
90bc41f7 | 167 | |
168 | if (c->or != NULL) | |
169 | ret->or = constraint_copy (c->or); | |
170 | else | |
171 | ret->or = NULL; | |
4ab867d6 | 172 | |
173 | ret->fcnPre = c->fcnPre; | |
90bc41f7 | 174 | |
616915dd | 175 | return ret; |
176 | } | |
177 | ||
178 | /*like copy expect it doesn't allocate memory for the constraint*/ | |
179 | ||
d46ce6a4 | 180 | void constraint_overWrite (constraint c1, constraint c2) |
616915dd | 181 | { |
72704d73 | 182 | llassert (constraint_isDefined (c1) && constraint_isDefined (c2)); |
d46ce6a4 | 183 | |
184 | llassert (c1 != c2); | |
185 | ||
bb7c2085 | 186 | DPRINTF ((message ("OverWriteing constraint %q with %q", constraint_print (c1), |
187 | constraint_print (c2)))); | |
d46ce6a4 | 188 | |
bb7c2085 | 189 | constraintExpr_free (c1->lexpr); |
190 | constraintExpr_free (c1->expr); | |
d46ce6a4 | 191 | |
616915dd | 192 | c1->lexpr = constraintExpr_copy (c2->lexpr); |
193 | c1->ar = c2->ar; | |
194 | c1->expr = constraintExpr_copy (c2->expr); | |
195 | c1->post = c2->post; | |
d46ce6a4 | 196 | |
197 | if (c1->orig != NULL) | |
198 | constraint_free (c1->orig); | |
199 | ||
616915dd | 200 | if (c2->orig != NULL) |
201 | c1->orig = constraint_copy (c2->orig); | |
202 | else | |
203 | c1->orig = NULL; | |
90bc41f7 | 204 | |
d46ce6a4 | 205 | /*@i33 make sure that the or is freed correctly*/ |
206 | if (c1->or != NULL) | |
207 | constraint_free (c1->or); | |
208 | ||
90bc41f7 | 209 | if (c2->or != NULL) |
210 | c1->or = constraint_copy (c2->or); | |
211 | else | |
212 | c1->or = NULL; | |
4ab867d6 | 213 | |
214 | c1->fcnPre = c2->fcnPre; | |
795e7f34 | 215 | |
216 | /*@-assignexpose@*/ | |
4ab867d6 | 217 | c1->generatingExpr = c2->generatingExpr; |
795e7f34 | 218 | /*@=assignexpose@*/ |
616915dd | 219 | } |
220 | ||
616915dd | 221 | |
222 | ||
d46ce6a4 | 223 | static /*@notnull@*/ /*@special@*/ constraint constraint_makeNew (void) |
ccf0a4a8 | 224 | /*@post:isnull result->or, result->orig, result->generatingExpr, result->fcnPre @*/ |
225 | /*@defines result->or, result->generatingExpr, result->orig, result->fcnPre @*/ | |
616915dd | 226 | { |
227 | constraint ret; | |
bb7c2085 | 228 | ret = dmalloc (sizeof (*ret)); |
616915dd | 229 | ret->lexpr = NULL; |
230 | ret->expr = NULL; | |
231 | ret->ar = LT; | |
232 | ret->post = FALSE; | |
233 | ret->orig = NULL; | |
90bc41f7 | 234 | ret->or = NULL; |
9280addf | 235 | ret->generatingExpr = NULL; |
4ab867d6 | 236 | ret->fcnPre = NULL; |
dc92450f | 237 | return ret; |
616915dd | 238 | } |
239 | ||
72704d73 | 240 | /*@access exprNode@*/ |
241 | ||
b37cf05e | 242 | constraint constraint_addGeneratingExpr (/*@returned@*/ constraint c, /*@exposed@*/ exprNode e) |
9280addf | 243 | { |
72704d73 | 244 | |
245 | llassert (constraint_isDefined (c) ); | |
246 | ||
9280addf | 247 | if (c->generatingExpr == NULL) |
248 | { | |
28bf4b0b | 249 | c->generatingExpr = e; |
bb7c2085 | 250 | DPRINTF ((message ("setting generatingExpr for %s to %s", constraint_print (c), exprNode_unparse (e)) )); |
9280addf | 251 | } |
252 | else | |
253 | { | |
bb7c2085 | 254 | DPRINTF ((message ("Not setting generatingExpr for %s to %s", constraint_print (c), exprNode_unparse (e)) )); |
9280addf | 255 | } |
256 | return c; | |
257 | } | |
72704d73 | 258 | /*@noaccess exprNode@*/ |
9280addf | 259 | |
4ab867d6 | 260 | constraint constraint_origAddGeneratingExpr (/*@returned@*/ constraint c, exprNode e) |
261 | { | |
72704d73 | 262 | llassert (constraint_isDefined (c) ); |
263 | ||
4ab867d6 | 264 | if (c->orig != constraint_undefined) |
265 | { | |
bb7c2085 | 266 | c->orig = constraint_addGeneratingExpr (c->orig, e); |
4ab867d6 | 267 | } |
268 | else | |
269 | { | |
bb7c2085 | 270 | DPRINTF ((message ("constraint_origAddGeneratingExpr: Not setting generatingExpr for %s to %s", constraint_print (c), exprNode_unparse (e)) )); |
4ab867d6 | 271 | } |
272 | return c; | |
273 | } | |
274 | ||
bb7c2085 | 275 | constraint constraint_setFcnPre (/*@returned@*/ constraint c) |
4ab867d6 | 276 | { |
277 | ||
72704d73 | 278 | llassert (constraint_isDefined (c) ); |
279 | ||
4ab867d6 | 280 | if (c->orig != constraint_undefined) |
281 | { | |
282 | c->orig->fcnPre = TRUE; | |
283 | } | |
284 | else | |
285 | { | |
286 | c->fcnPre = TRUE; | |
bb7c2085 | 287 | DPRINTF (( message ("Warning Setting fcnPre directly"))); |
4ab867d6 | 288 | } |
289 | return c; | |
290 | } | |
291 | ||
292 | ||
293 | ||
294 | ||
616915dd | 295 | fileloc constraint_getFileloc (constraint c) |
296 | { | |
72704d73 | 297 | |
298 | llassert (constraint_isDefined (c) ); | |
299 | ||
bb7c2085 | 300 | if (exprNode_isDefined (c->generatingExpr)) |
301 | return (fileloc_copy (exprNode_getfileloc (c->generatingExpr))); | |
72704d73 | 302 | |
bb7c2085 | 303 | return (constraintExpr_getFileloc (c->lexpr)); |
72704d73 | 304 | |
616915dd | 305 | |
306 | } | |
307 | ||
9280addf | 308 | static bool checkForMaxSet (constraint c) |
309 | { | |
72704d73 | 310 | |
311 | llassert (constraint_isDefined (c) ); | |
312 | ||
bb7c2085 | 313 | if (constraintExpr_hasMaxSet (c->lexpr) || constraintExpr_hasMaxSet (c->expr)) |
9280addf | 314 | return TRUE; |
315 | ||
316 | return FALSE; | |
317 | } | |
318 | ||
bb7c2085 | 319 | bool constraint_hasMaxSet (constraint c) |
9280addf | 320 | { |
72704d73 | 321 | |
322 | llassert (constraint_isDefined (c) ); | |
323 | ||
bb7c2085 | 324 | if (checkForMaxSet (c)) |
03d670b6 | 325 | return TRUE; |
326 | ||
dc92450f | 327 | if (c->orig != NULL) |
9280addf | 328 | { |
bb7c2085 | 329 | if (checkForMaxSet (c->orig)) |
9280addf | 330 | return TRUE; |
331 | } | |
332 | ||
03d670b6 | 333 | return FALSE; |
9280addf | 334 | } |
335 | ||
abd7f895 | 336 | constraint constraint_makeReadSafeExprNode (exprNode po, exprNode ind) |
616915dd | 337 | { |
bb7c2085 | 338 | constraint ret = constraint_makeNew (); |
b7b694d6 | 339 | |
28bf4b0b | 340 | po = po; |
341 | ind = ind; | |
bb7c2085 | 342 | ret->lexpr = constraintExpr_makeMaxReadExpr (po); |
616915dd | 343 | ret->ar = GTE; |
344 | ret->expr = constraintExpr_makeValueExpr (ind); | |
d46ce6a4 | 345 | ret->post = FALSE; |
616915dd | 346 | return ret; |
347 | } | |
348 | ||
28bf4b0b | 349 | constraint constraint_makeWriteSafeInt ( exprNode po, int ind) |
616915dd | 350 | { |
bb7c2085 | 351 | constraint ret = constraint_makeNew (); |
616915dd | 352 | |
353 | ||
bb7c2085 | 354 | ret->lexpr =constraintExpr_makeMaxSetExpr (po); |
616915dd | 355 | ret->ar = GTE; |
c3e695ff | 356 | ret->expr = constraintExpr_makeIntLiteral (ind); |
616915dd | 357 | /*@i1*/return ret; |
358 | } | |
359 | ||
84c9ffbf | 360 | constraint constraint_makeSRefSetBufferSize (sRef s, long int size) |
616915dd | 361 | { |
bb7c2085 | 362 | constraint ret = constraint_makeNew (); |
4ab867d6 | 363 | ret->lexpr = constraintExpr_makeSRefMaxset (s); |
616915dd | 364 | ret->ar = EQ; |
84c9ffbf | 365 | ret->expr = constraintExpr_makeIntLiteral ((int)size); |
616915dd | 366 | ret->post = TRUE; |
332e22fa | 367 | /*@i1*/ |
368 | return ret; | |
616915dd | 369 | } |
370 | ||
371 | constraint constraint_makeSRefWriteSafeInt (sRef s, int ind) | |
372 | { | |
bb7c2085 | 373 | constraint ret = constraint_makeNew (); |
616915dd | 374 | |
375 | ||
bb7c2085 | 376 | ret->lexpr = constraintExpr_makeSRefMaxset ( s); |
616915dd | 377 | ret->ar = GTE; |
c3e695ff | 378 | ret->expr = constraintExpr_makeIntLiteral (ind); |
616915dd | 379 | ret->post = TRUE; |
332e22fa | 380 | /*@i1*/ |
381 | return ret; | |
616915dd | 382 | } |
383 | ||
384 | /* drl added 01/12/2000 | |
385 | ||
bb7c2085 | 386 | makes the constraint: Ensures index <= MaxRead (buffer) */ |
616915dd | 387 | |
bb7c2085 | 388 | constraint constraint_makeEnsureLteMaxRead (exprNode index, exprNode buffer) |
616915dd | 389 | { |
bb7c2085 | 390 | constraint ret = constraint_makeNew (); |
616915dd | 391 | |
392 | ret->lexpr = constraintExpr_makeValueExpr (index); | |
393 | ret->ar = LTE; | |
bb7c2085 | 394 | ret->expr = constraintExpr_makeMaxReadExpr (buffer); |
616915dd | 395 | ret->post = TRUE; |
396 | return ret; | |
397 | } | |
398 | ||
399 | constraint constraint_makeWriteSafeExprNode (exprNode po, exprNode ind) | |
400 | { | |
bb7c2085 | 401 | constraint ret = constraint_makeNew (); |
616915dd | 402 | |
403 | ||
bb7c2085 | 404 | ret->lexpr =constraintExpr_makeMaxSetExpr (po); |
616915dd | 405 | ret->ar = GTE; |
406 | ret->expr = constraintExpr_makeValueExpr (ind); | |
407 | /*@i1*/return ret; | |
408 | } | |
409 | ||
410 | ||
28bf4b0b | 411 | constraint constraint_makeReadSafeInt ( exprNode t1, int index) |
616915dd | 412 | { |
bb7c2085 | 413 | constraint ret = constraint_makeNew (); |
616915dd | 414 | |
bb7c2085 | 415 | ret->lexpr = constraintExpr_makeMaxReadExpr (t1); |
616915dd | 416 | ret->ar = GTE; |
28bf4b0b | 417 | ret->expr = constraintExpr_makeIntLiteral (index); |
d46ce6a4 | 418 | ret->post = FALSE; |
616915dd | 419 | return ret; |
420 | } | |
421 | ||
470b7798 | 422 | constraint constraint_makeSRefReadSafeInt (sRef s, int ind) |
423 | { | |
bb7c2085 | 424 | constraint ret = constraint_makeNew (); |
470b7798 | 425 | |
426 | ||
bb7c2085 | 427 | ret->lexpr = constraintExpr_makeSRefMaxRead (s); |
470b7798 | 428 | ret->ar = GTE; |
c3e695ff | 429 | ret->expr = constraintExpr_makeIntLiteral (ind); |
470b7798 | 430 | ret->post = TRUE; |
332e22fa | 431 | return ret; |
470b7798 | 432 | } |
433 | ||
28bf4b0b | 434 | constraint constraint_makeEnsureMaxReadAtLeast (exprNode t1, exprNode t2, fileloc sequencePoint) |
616915dd | 435 | { |
d46ce6a4 | 436 | constraint ret; |
616915dd | 437 | |
72704d73 | 438 | ret = constraint_makeReadSafeExprNode (t1, t2); |
439 | llassert (constraint_isDefined (ret) ); | |
440 | ||
b7b694d6 | 441 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); |
616915dd | 442 | ret->post = TRUE; |
443 | ||
616915dd | 444 | return ret; |
445 | } | |
446 | ||
d46ce6a4 | 447 | static constraint constraint_makeEnsuresOpConstraintExpr (/*@only@*/ constraintExpr c1, /*@only@*/ constraintExpr c2, fileloc sequencePoint, arithType ar) |
470b7798 | 448 | { |
449 | ||
450 | constraint ret; | |
451 | ||
bb7c2085 | 452 | llassert (constraintExpr_isDefined (c1) && constraintExpr_isDefined (c2)); |
470b7798 | 453 | |
bb7c2085 | 454 | ret = constraint_makeNew (); |
470b7798 | 455 | |
456 | ret->lexpr = c1; | |
457 | ret->ar = ar; | |
458 | ret->post = TRUE; | |
459 | ret->expr = c2; | |
460 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); | |
461 | return ret; | |
462 | } | |
616915dd | 463 | |
28bf4b0b | 464 | static constraint constraint_makeEnsuresOp (/*@dependent@*/ exprNode e1, /*@dependent@*/ exprNode e2, fileloc sequencePoint, arithType ar) |
616915dd | 465 | { |
470b7798 | 466 | constraintExpr c1, c2; |
467 | constraint ret; | |
616915dd | 468 | exprNode e; |
470b7798 | 469 | |
bb7c2085 | 470 | if (! (exprNode_isDefined (e1) && exprNode_isDefined (e2))) |
616915dd | 471 | { |
bb7c2085 | 472 | llcontbug ((message ("null exprNode, Exprnodes are %s and %s", |
473 | exprNode_unparse (e1), exprNode_unparse (e2)) | |
474 | )); | |
616915dd | 475 | } |
470b7798 | 476 | |
28bf4b0b | 477 | e = e1; |
470b7798 | 478 | c1 = constraintExpr_makeValueExpr (e); |
479 | ||
28bf4b0b | 480 | e = e2; |
470b7798 | 481 | c2 = constraintExpr_makeValueExpr (e); |
482 | ||
483 | ret = constraint_makeEnsuresOpConstraintExpr (c1, c2, sequencePoint, ar); | |
616915dd | 484 | |
616915dd | 485 | return ret; |
486 | } | |
487 | ||
488 | ||
489 | /* make constraint ensures e1 == e2 */ | |
490 | ||
491 | constraint constraint_makeEnsureEqual (exprNode e1, exprNode e2, fileloc sequencePoint) | |
492 | { | |
bb7c2085 | 493 | return ( constraint_makeEnsuresOp (e1, e2, sequencePoint, EQ)); |
616915dd | 494 | } |
495 | ||
496 | /*make constraint ensures e1 < e2 */ | |
497 | constraint constraint_makeEnsureLessThan (exprNode e1, exprNode e2, fileloc sequencePoint) | |
498 | { | |
470b7798 | 499 | constraintExpr t1, t2; |
d9daf826 | 500 | constraint t3; |
470b7798 | 501 | |
502 | t1 = constraintExpr_makeValueExpr (e1); | |
503 | t2 = constraintExpr_makeValueExpr (e2); | |
504 | ||
505 | /*change this to e1 <= (e2 -1) */ | |
506 | ||
507 | t2 = constraintExpr_makeDecConstraintExpr (t2); | |
d9daf826 | 508 | |
509 | t3 = constraint_makeEnsuresOpConstraintExpr (t1, t2, sequencePoint, LTE); | |
510 | ||
511 | t3 = constraint_simplify(t3); | |
512 | return (t3); | |
616915dd | 513 | } |
514 | ||
515 | constraint constraint_makeEnsureLessThanEqual (exprNode e1, exprNode e2, fileloc sequencePoint) | |
516 | { | |
bb7c2085 | 517 | return ( constraint_makeEnsuresOp (e1, e2, sequencePoint, LTE)); |
616915dd | 518 | } |
519 | ||
520 | constraint constraint_makeEnsureGreaterThan (exprNode e1, exprNode e2, fileloc sequencePoint) | |
521 | { | |
470b7798 | 522 | constraintExpr t1, t2; |
d9daf826 | 523 | constraint t3; |
470b7798 | 524 | |
525 | t1 = constraintExpr_makeValueExpr (e1); | |
526 | t2 = constraintExpr_makeValueExpr (e2); | |
527 | ||
528 | ||
529 | /* change this to e1 >= (e2 + 1) */ | |
530 | t2 = constraintExpr_makeIncConstraintExpr (t2); | |
531 | ||
d9daf826 | 532 | t3 = constraint_makeEnsuresOpConstraintExpr (t1, t2, sequencePoint, GTE); |
533 | ||
534 | t3 = constraint_simplify(t3); | |
470b7798 | 535 | |
d9daf826 | 536 | return t3; |
616915dd | 537 | } |
538 | ||
539 | constraint constraint_makeEnsureGreaterThanEqual (exprNode e1, exprNode e2, fileloc sequencePoint) | |
540 | { | |
bb7c2085 | 541 | return ( constraint_makeEnsuresOp (e1, e2, sequencePoint, GTE)); |
616915dd | 542 | } |
543 | ||
544 | ||
616915dd | 545 | |
2934b455 | 546 | /* Makes the constraint e = e + f */ |
547 | constraint constraint_makeAddAssign (exprNode e, exprNode f, fileloc sequencePoint) | |
548 | { | |
549 | constraintExpr x1, x2, y; | |
550 | constraint ret; | |
551 | ||
bb7c2085 | 552 | ret = constraint_makeNew (); |
2934b455 | 553 | |
554 | x1 = constraintExpr_makeValueExpr (e); | |
bb7c2085 | 555 | x2 = constraintExpr_copy (x1); |
2934b455 | 556 | y = constraintExpr_makeValueExpr (f); |
557 | ||
558 | ret->lexpr = x1; | |
559 | ret->ar = EQ; | |
560 | ret->post = TRUE; | |
561 | ret->expr = constraintExpr_makeAddExpr (x2, y); | |
562 | ||
563 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); | |
564 | ||
565 | return ret; | |
566 | } | |
567 | ||
568 | ||
569 | /* Makes the constraint e = e - f */ | |
570 | constraint constraint_makeSubtractAssign (exprNode e, exprNode f, fileloc sequencePoint) | |
571 | { | |
572 | constraintExpr x1, x2, y; | |
573 | constraint ret; | |
574 | ||
bb7c2085 | 575 | ret = constraint_makeNew (); |
2934b455 | 576 | |
577 | x1 = constraintExpr_makeValueExpr (e); | |
bb7c2085 | 578 | x2 = constraintExpr_copy (x1); |
2934b455 | 579 | y = constraintExpr_makeValueExpr (f); |
580 | ||
581 | ret->lexpr = x1; | |
582 | ret->ar = EQ; | |
583 | ret->post = TRUE; | |
584 | ret->expr = constraintExpr_makeSubtractExpr (x2, y); | |
585 | ||
586 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); | |
587 | ||
588 | return ret; | |
589 | } | |
590 | ||
616915dd | 591 | constraint constraint_makeMaxSetSideEffectPostDecrement (exprNode e, fileloc sequencePoint) |
592 | { | |
bb7c2085 | 593 | constraint ret = constraint_makeNew (); |
616915dd | 594 | |
616915dd | 595 | ret->lexpr = constraintExpr_makeValueExpr (e); |
596 | ret->ar = EQ; | |
597 | ret->post = TRUE; | |
598 | ret->expr = constraintExpr_makeValueExpr (e); | |
599 | ret->expr = constraintExpr_makeDecConstraintExpr (ret->expr); | |
616915dd | 600 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); |
616915dd | 601 | return ret; |
602 | } | |
603 | constraint constraint_makeMaxSetSideEffectPostIncrement (exprNode e, fileloc sequencePoint) | |
604 | { | |
bb7c2085 | 605 | constraint ret = constraint_makeNew (); |
616915dd | 606 | |
616915dd | 607 | ret->lexpr = constraintExpr_makeValueExpr (e); |
608 | ret->ar = EQ; | |
609 | ret->post = TRUE; | |
610 | ret->expr = constraintExpr_makeValueExpr (e); | |
611 | ret->expr = constraintExpr_makeIncConstraintExpr (ret->expr); | |
612 | ||
613 | ret->lexpr = constraintExpr_setFileloc (ret->lexpr, sequencePoint); | |
616915dd | 614 | return ret; |
615 | } | |
616 | ||
617 | ||
920a3797 | 618 | void constraint_free (/*@only@*/ constraint c) |
d46ce6a4 | 619 | { |
bb7c2085 | 620 | llassert (constraint_isDefined (c)); |
d46ce6a4 | 621 | |
622 | ||
bb7c2085 | 623 | if (constraint_isDefined (c->orig)) |
d46ce6a4 | 624 | constraint_free (c->orig); |
bb7c2085 | 625 | if ( constraint_isDefined (c->or)) |
d46ce6a4 | 626 | constraint_free (c->or); |
627 | ||
bb25bea6 | 628 | |
bb7c2085 | 629 | constraintExpr_free (c->lexpr); |
630 | constraintExpr_free (c->expr); | |
bb25bea6 | 631 | |
632 | c->orig = NULL; | |
633 | c->or = NULL; | |
634 | c->lexpr = NULL; | |
635 | c->expr = NULL; | |
636 | ||
d46ce6a4 | 637 | free (c); |
638 | ||
639 | } | |
640 | ||
dc92450f | 641 | cstring arithType_print (arithType ar) /*@*/ |
616915dd | 642 | { |
643 | cstring st = cstring_undefined; | |
644 | switch (ar) | |
645 | { | |
646 | case LT: | |
a779b61e | 647 | st = cstring_makeLiteral ("<"); |
616915dd | 648 | break; |
649 | case LTE: | |
a779b61e | 650 | st = cstring_makeLiteral ("<="); |
616915dd | 651 | break; |
652 | case GT: | |
a779b61e | 653 | st = cstring_makeLiteral (">"); |
616915dd | 654 | break; |
655 | case GTE: | |
a779b61e | 656 | st = cstring_makeLiteral (">="); |
616915dd | 657 | break; |
658 | case EQ: | |
a779b61e | 659 | st = cstring_makeLiteral ("=="); |
616915dd | 660 | break; |
661 | case NONNEGATIVE: | |
a779b61e | 662 | st = cstring_makeLiteral ("NONNEGATIVE"); |
616915dd | 663 | break; |
664 | case POSITIVE: | |
a779b61e | 665 | st = cstring_makeLiteral ("POSITIVE"); |
616915dd | 666 | break; |
667 | default: | |
bb7c2085 | 668 | llassert (FALSE); |
616915dd | 669 | break; |
670 | } | |
671 | return st; | |
672 | } | |
673 | ||
8f299805 | 674 | void constraint_printErrorPostCondition (constraint c, fileloc loc) |
675 | { | |
676 | cstring string; | |
677 | fileloc errorLoc, temp; | |
678 | ||
679 | string = constraint_printDetailedPostCondition (c); | |
680 | ||
681 | errorLoc = loc; | |
682 | ||
683 | loc = NULL; | |
684 | ||
bb7c2085 | 685 | temp = constraint_getFileloc (c); |
8f299805 | 686 | |
9276a168 | 687 | |
688 | if (context_getFlag (FLG_BOUNDSCOMPACTERRORMESSAGES ) ) | |
689 | { | |
690 | string = cstring_replaceChar(string, '\n', ' '); | |
691 | } | |
692 | ||
bb7c2085 | 693 | if (fileloc_isDefined (temp)) |
8f299805 | 694 | { |
695 | errorLoc = temp; | |
696 | voptgenerror ( FLG_CHECKPOST, string, errorLoc); | |
bb7c2085 | 697 | fileloc_free (temp); |
8f299805 | 698 | } |
699 | else | |
700 | { | |
701 | voptgenerror ( FLG_CHECKPOST, string, errorLoc); | |
702 | } | |
703 | } | |
704 | ||
f4ec8018 | 705 | /*drl added 8-11-001*/ |
706 | cstring constraint_printLocation (/*@observer@*/ /*@temp@*/ constraint c) /*@*/ | |
707 | { | |
708 | cstring string, ret; | |
709 | fileloc errorLoc; | |
710 | ||
bb7c2085 | 711 | string = constraint_print (c); |
f4ec8018 | 712 | |
bb7c2085 | 713 | errorLoc = constraint_getFileloc (c); |
f4ec8018 | 714 | |
bb7c2085 | 715 | ret = message ("constraint: %q @ %q", string, fileloc_unparse (errorLoc)); |
f4ec8018 | 716 | |
bb7c2085 | 717 | fileloc_free (errorLoc); |
f4ec8018 | 718 | return ret; |
719 | ||
720 | } | |
8f299805 | 721 | |
722 | ||
723 | ||
616915dd | 724 | void constraint_printError (constraint c, fileloc loc) |
725 | { | |
726 | cstring string; | |
4ab867d6 | 727 | fileloc errorLoc, temp; |
e5f31c00 | 728 | |
fba0ed37 | 729 | bool isLikely; |
e5f31c00 | 730 | |
72704d73 | 731 | |
732 | llassert (constraint_isDefined (c) ); | |
733 | ||
e5f31c00 | 734 | /*drl 11/26/2001 avoid printing tautological constraints */ |
bb7c2085 | 735 | if (constraint_isAlwaysTrue (c)) |
e5f31c00 | 736 | { |
737 | return; | |
738 | } | |
739 | ||
740 | ||
616915dd | 741 | string = constraint_printDetailed (c); |
9280addf | 742 | |
743 | errorLoc = loc; | |
744 | ||
bb7c2085 | 745 | temp = constraint_getFileloc (c); |
4ab867d6 | 746 | |
bb7c2085 | 747 | if (fileloc_isDefined (temp)) |
616915dd | 748 | { |
4ab867d6 | 749 | errorLoc = temp; |
84380658 | 750 | } |
751 | else | |
752 | { | |
bb7c2085 | 753 | llassert (FALSE); |
754 | DPRINTF (("constraint %s had undefined fileloc %s", constraint_print (c), fileloc_unparse (temp))); | |
755 | fileloc_free (temp); | |
756 | errorLoc = fileloc_copy (errorLoc); | |
84380658 | 757 | } |
9276a168 | 758 | |
759 | ||
760 | if (context_getFlag (FLG_BOUNDSCOMPACTERRORMESSAGES ) ) | |
761 | { | |
762 | string = cstring_replaceChar(string, '\n', ' '); | |
763 | } | |
764 | ||
fba0ed37 | 765 | /*drl added 12/19/2002 print |
766 | a different error fro "likely" bounds-errors*/ | |
767 | ||
768 | isLikely = constraint_isConstantOnly(c); | |
9276a168 | 769 | |
fba0ed37 | 770 | if (isLikely) |
771 | { | |
772 | if (c->post) | |
773 | { | |
774 | voptgenerror (FLG_FUNCTIONPOST, string, errorLoc); | |
775 | } | |
776 | else | |
777 | { | |
778 | if (constraint_hasMaxSet (c)) | |
779 | { | |
780 | voptgenerror (FLG_LIKELYBOUNDSWRITE, string, errorLoc); | |
781 | } | |
782 | else | |
783 | { | |
784 | voptgenerror (FLG_LIKELYBOUNDSREAD, string, errorLoc); | |
785 | } | |
786 | } | |
787 | } | |
788 | else if (c->post) | |
84380658 | 789 | { |
790 | voptgenerror (FLG_FUNCTIONPOST, string, errorLoc); | |
616915dd | 791 | } |
792 | else | |
793 | { | |
bb7c2085 | 794 | if (constraint_hasMaxSet (c)) |
795 | { | |
796 | voptgenerror (FLG_BOUNDSWRITE, string, errorLoc); | |
797 | } | |
4ab867d6 | 798 | else |
bb7c2085 | 799 | { |
800 | voptgenerror (FLG_BOUNDSREAD, string, errorLoc); | |
801 | } | |
616915dd | 802 | } |
84380658 | 803 | |
86d93ed3 | 804 | fileloc_free(errorLoc); |
616915dd | 805 | } |
806 | ||
28bf4b0b | 807 | static cstring constraint_printDeep (constraint c) |
616915dd | 808 | { |
28bf4b0b | 809 | cstring genExpr; |
616915dd | 810 | cstring st = cstring_undefined; |
811 | ||
72704d73 | 812 | |
813 | llassert (constraint_isDefined (c) ); | |
814 | ||
815 | ||
86d93ed3 | 816 | st = constraint_print(c); |
28bf4b0b | 817 | |
4ab867d6 | 818 | if (c->orig != constraint_undefined) |
819 | { | |
bb7c2085 | 820 | st = cstring_appendChar (st, '\n'); |
821 | genExpr = exprNode_unparse (c->orig->generatingExpr); | |
822 | ||
4ab867d6 | 823 | if (!c->post) |
824 | { | |
825 | if (c->orig->fcnPre) | |
bb7c2085 | 826 | { |
827 | st = cstring_concatFree (st, message (" derived from %s precondition: %q", | |
828 | genExpr, constraint_printDeep (c->orig))); | |
829 | } | |
4ab867d6 | 830 | else |
bb7c2085 | 831 | { |
832 | st = cstring_concatFree (st, message (" needed to satisfy precondition:\n%q", | |
833 | constraint_printDeep (c->orig))); | |
834 | } | |
4ab867d6 | 835 | } |
836 | else | |
837 | { | |
bb7c2085 | 838 | st = cstring_concatFree (st, message ("derived from: %q", |
839 | constraint_printDeep (c->orig))); | |
4ab867d6 | 840 | } |
841 | } | |
842 | ||
843 | return st; | |
4ab867d6 | 844 | } |
845 | ||
2934b455 | 846 | |
847 | static /*@only@*/ cstring constraint_printDetailedPostCondition (/*@observer@*/ /*@temp@*/ constraint c) | |
8f299805 | 848 | { |
849 | cstring st = cstring_undefined; | |
28bf4b0b | 850 | cstring genExpr; |
72704d73 | 851 | |
852 | ||
853 | llassert (constraint_isDefined (c) ); | |
854 | ||
bb7c2085 | 855 | st = message ("Unsatisfied ensures constraint condition:\nSplint is unable to verify the constraint %q", constraint_printDeep (c)); |
28bf4b0b | 856 | |
857 | genExpr = exprNode_unparse (c->generatingExpr); | |
858 | ||
bb7c2085 | 859 | if (context_getFlag (FLG_CONSTRAINTLOCATION)) |
8f299805 | 860 | { |
861 | cstring temp; | |
b7b694d6 | 862 | |
863 | temp = message ("\nOriginal Generating expression %q: %s\n", | |
bb7c2085 | 864 | fileloc_unparse ( exprNode_getfileloc (c->generatingExpr)), |
865 | genExpr); | |
8f299805 | 866 | st = cstring_concatFree (st, temp); |
867 | ||
bb7c2085 | 868 | if (constraint_hasMaxSet (c)) |
8f299805 | 869 | { |
870 | temp = message ("Has MaxSet\n"); | |
871 | st = cstring_concatFree (st, temp); | |
872 | } | |
873 | } | |
874 | return st; | |
875 | } | |
876 | ||
4ab867d6 | 877 | cstring constraint_printDetailed (constraint c) |
878 | { | |
879 | cstring st = cstring_undefined; | |
03d670b6 | 880 | cstring temp = cstring_undefined; |
9276a168 | 881 | cstring genExpr; |
fba0ed37 | 882 | bool isLikely; |
72704d73 | 883 | |
884 | llassert (constraint_isDefined (c) ); | |
885 | ||
616915dd | 886 | if (!c->post) |
887 | { | |
bb7c2085 | 888 | st = message ("Unable to resolve constraint:\n%q", constraint_printDeep (c)); |
616915dd | 889 | } |
890 | else | |
891 | { | |
bb7c2085 | 892 | st = message ("Block Post condition:\nThis function block has the post condition %q", constraint_printDeep (c)); |
616915dd | 893 | } |
9280addf | 894 | |
fba0ed37 | 895 | isLikely = constraint_isConstantOnly(c); |
896 | ||
897 | if (isLikely) | |
03d670b6 | 898 | { |
fba0ed37 | 899 | if (constraint_hasMaxSet (c)) |
900 | { | |
901 | temp = cstring_makeLiteral ("Likely out-of-bounds store:\n"); | |
902 | } | |
903 | else | |
904 | { | |
905 | temp = cstring_makeLiteral ("Likely out-of-bounds read:\n"); | |
906 | } | |
03d670b6 | 907 | } |
908 | else | |
909 | { | |
fba0ed37 | 910 | |
911 | if (constraint_hasMaxSet (c)) | |
912 | { | |
913 | temp = cstring_makeLiteral ("Possible out-of-bounds store:\n"); | |
914 | } | |
915 | else | |
916 | { | |
917 | temp = cstring_makeLiteral ("Possible out-of-bounds read:\n"); | |
918 | } | |
03d670b6 | 919 | } |
03d670b6 | 920 | |
28bf4b0b | 921 | genExpr = exprNode_unparse (c->generatingExpr); |
7bf96067 | 922 | |
bb7c2085 | 923 | if (context_getFlag (FLG_CONSTRAINTLOCATION)) |
9280addf | 924 | { |
7bf96067 | 925 | cstring temp2; |
bb7c2085 | 926 | temp2 = message ("%s\n", genExpr); |
7bf96067 | 927 | temp = cstring_concatFree (temp, temp2); |
9280addf | 928 | } |
7bf96067 | 929 | |
bb7c2085 | 930 | st = cstring_concatFree (temp,st); |
7bf96067 | 931 | |
616915dd | 932 | return st; |
933 | } | |
934 | ||
d46ce6a4 | 935 | /*@only@*/ cstring constraint_print (constraint c) /*@*/ |
616915dd | 936 | { |
937 | cstring st = cstring_undefined; | |
938 | cstring type = cstring_undefined; | |
dc92450f | 939 | llassert (c !=NULL); |
616915dd | 940 | if (c->post) |
941 | { | |
bb7c2085 | 942 | if (context_getFlag (FLG_PARENCONSTRAINT)) |
a779b61e | 943 | { |
944 | type = cstring_makeLiteral ("ensures: "); | |
945 | } | |
946 | else | |
947 | { | |
948 | type = cstring_makeLiteral ("ensures"); | |
949 | } | |
616915dd | 950 | } |
951 | else | |
952 | { | |
bb7c2085 | 953 | if (context_getFlag (FLG_PARENCONSTRAINT)) |
a779b61e | 954 | { |
955 | type = cstring_makeLiteral ("requires: "); | |
956 | } | |
957 | else | |
958 | { | |
959 | type = cstring_makeLiteral ("requires"); | |
960 | } | |
961 | ||
616915dd | 962 | } |
bb7c2085 | 963 | if (context_getFlag (FLG_PARENCONSTRAINT)) |
a779b61e | 964 | { |
965 | st = message ("%q: %q %q %q", | |
966 | type, | |
967 | constraintExpr_print (c->lexpr), | |
bb7c2085 | 968 | arithType_print (c->ar), |
969 | constraintExpr_print (c->expr) | |
a779b61e | 970 | ); |
971 | } | |
972 | else | |
973 | { | |
974 | st = message ("%q %q %q %q", | |
975 | type, | |
976 | constraintExpr_print (c->lexpr), | |
bb7c2085 | 977 | arithType_print (c->ar), |
978 | constraintExpr_print (c->expr) | |
616915dd | 979 | ); |
a779b61e | 980 | } |
616915dd | 981 | return st; |
982 | } | |
983 | ||
90bc41f7 | 984 | cstring constraint_printOr (constraint c) /*@*/ |
985 | { | |
986 | cstring ret; | |
987 | constraint temp; | |
988 | ||
989 | ret = cstring_undefined; | |
72704d73 | 990 | |
991 | llassert (constraint_isDefined (c) ); | |
992 | ||
90bc41f7 | 993 | temp = c; |
994 | ||
bb7c2085 | 995 | ret = cstring_concatFree (ret, constraint_print (temp)); |
90bc41f7 | 996 | |
997 | temp = temp->or; | |
998 | ||
bb7c2085 | 999 | while ( constraint_isDefined (temp)) |
90bc41f7 | 1000 | { |
bb7c2085 | 1001 | ret = cstring_concatFree (ret, cstring_makeLiteral (" OR ")); |
1002 | ret = cstring_concatFree (ret, constraint_print (temp)); | |
90bc41f7 | 1003 | temp = temp->or; |
1004 | } | |
1005 | ||
1006 | return ret; | |
1007 | ||
1008 | } | |
1009 | ||
dc92450f | 1010 | /*@only@*/ constraint constraint_doSRefFixBaseParam (/*@returned@*/ /*@only@*/ constraint precondition, |
616915dd | 1011 | exprNodeList arglist) |
1012 | { | |
72704d73 | 1013 | |
1014 | llassert (constraint_isDefined (precondition) ); | |
1015 | ||
616915dd | 1016 | precondition->lexpr = constraintExpr_doSRefFixBaseParam (precondition->lexpr, |
1017 | arglist); | |
1018 | precondition->expr = constraintExpr_doSRefFixBaseParam (precondition->expr, | |
1019 | arglist); | |
1020 | ||
1021 | return precondition; | |
1022 | } | |
1023 | ||
1024 | ||
28bf4b0b | 1025 | constraint constraint_doFixResult (constraint postcondition, /*@dependent@*/ exprNode fcnCall) |
616915dd | 1026 | { |
1027 | postcondition = constraint_copy (postcondition); | |
72704d73 | 1028 | |
1029 | llassert (constraint_isDefined (postcondition) ); | |
1030 | ||
1031 | ||
616915dd | 1032 | postcondition->lexpr = constraintExpr_doFixResult (postcondition->lexpr, fcnCall); |
1033 | postcondition->expr = constraintExpr_doFixResult (postcondition->expr, fcnCall); | |
1034 | ||
1035 | return postcondition; | |
1036 | } | |
86d93ed3 | 1037 | /*Commenting out temporally |
1038 | ||
1039 | / *@only@* /constraint constraint_doSRefFixInvarConstraint(constraint invar, sRef s, ctype ct ) | |
1040 | { | |
1041 | ||
1042 | invar = constraint_copy (invar); | |
1043 | invar->lexpr = constraintExpr_doSRefFixInvarConstraint (invar->lexpr, s, ct); | |
1044 | invar->expr = constraintExpr_doSRefFixInvarConstraint (invar->expr, s, ct); | |
1045 | ||
1046 | return invar; | |
1047 | } | |
1048 | */ | |
616915dd | 1049 | |
d46ce6a4 | 1050 | /*@only@*/ constraint constraint_doSRefFixConstraintParam (constraint precondition, |
616915dd | 1051 | exprNodeList arglist) |
1052 | { | |
1053 | ||
1054 | precondition = constraint_copy (precondition); | |
72704d73 | 1055 | |
1056 | llassert (constraint_isDefined (precondition) ); | |
1057 | ||
616915dd | 1058 | precondition->lexpr = constraintExpr_doSRefFixConstraintParam (precondition->lexpr, arglist); |
1059 | precondition->expr = constraintExpr_doSRefFixConstraintParam (precondition->expr, arglist); | |
1060 | ||
4ab867d6 | 1061 | precondition->fcnPre = FALSE; |
d9daf826 | 1062 | return constraint_simplify(precondition); |
616915dd | 1063 | } |
1064 | ||
d46ce6a4 | 1065 | constraint constraint_preserveOrig (/*@returned@*/ constraint c) /*@modifies c @*/ |
616915dd | 1066 | { |
4ab867d6 | 1067 | |
bb7c2085 | 1068 | DPRINTF ((message ("Doing constraint_preserverOrig for %q ", constraint_printDetailed (c)))); |
72704d73 | 1069 | |
1070 | llassert (constraint_isDefined (c) ); | |
1071 | ||
d46ce6a4 | 1072 | if (c->orig == constraint_undefined) |
1073 | c->orig = constraint_copy (c); | |
4ab867d6 | 1074 | |
1075 | else if (c->orig->fcnPre) | |
1076 | { | |
1077 | constraint temp; | |
1078 | ||
1079 | temp = c->orig; | |
1080 | ||
1081 | /* avoid infinite loop */ | |
1082 | c->orig = NULL; | |
1083 | c->orig = constraint_copy (c); | |
72704d73 | 1084 | /*drl 03/2/2003 if c != NULL then the copy of c will != null*/ |
1085 | llassert (constraint_isDefined (c->orig) ); | |
1086 | ||
4ab867d6 | 1087 | if (c->orig->orig == NULL) |
920a3797 | 1088 | { |
1089 | c->orig->orig = temp; | |
1090 | temp = NULL; | |
1091 | } | |
4ab867d6 | 1092 | else |
920a3797 | 1093 | { |
bb7c2085 | 1094 | llcontbug ((message ("Expected c->orig->orig to be null"))); |
1095 | constraint_free (c->orig->orig); | |
920a3797 | 1096 | c->orig->orig = temp; |
1097 | temp = NULL; | |
1098 | } | |
4ab867d6 | 1099 | } |
1100 | else | |
1101 | { | |
bb7c2085 | 1102 | DPRINTF ((message ("Not changing constraint"))); |
4ab867d6 | 1103 | } |
d46ce6a4 | 1104 | |
bb7c2085 | 1105 | DPRINTF ((message ("After Doing constraint_preserverOrig for %q ", constraint_printDetailed (c)))); |
4ab867d6 | 1106 | |
616915dd | 1107 | return c; |
1108 | } | |
1109 | /*@=fcnuse*/ | |
1110 | /*@=assignexpose*/ | |
1111 | /*@=czechfcns@*/ | |
84c9ffbf | 1112 | |
2934b455 | 1113 | |
84c9ffbf | 1114 | constraint constraint_togglePost (/*@returned@*/ constraint c) |
1115 | { | |
72704d73 | 1116 | llassert (constraint_isDefined (c) ); |
1117 | ||
84c9ffbf | 1118 | c->post = !c->post; |
1119 | return c; | |
1120 | } | |
2934b455 | 1121 | |
1122 | constraint constraint_togglePostOrig (/*@returned@*/ constraint c) | |
1123 | { | |
72704d73 | 1124 | llassert (constraint_isDefined (c) ); |
1125 | ||
2934b455 | 1126 | if (c->orig != NULL) |
bb7c2085 | 1127 | c->orig = constraint_togglePost (c->orig); |
2934b455 | 1128 | return c; |
1129 | } | |
1130 | ||
bb7c2085 | 1131 | bool constraint_hasOrig ( /*@observer@*/ /*@temp@*/ constraint c) |
2934b455 | 1132 | { |
72704d73 | 1133 | |
1134 | llassert (constraint_isDefined (c) ); | |
1135 | ||
1136 | if (c->orig == NULL) | |
2934b455 | 1137 | return FALSE; |
1138 | else | |
1139 | return TRUE; | |
1140 | } | |
920a3797 | 1141 | |
1142 | ||
1143 | constraint constraint_undump (FILE *f) | |
1144 | { | |
1145 | constraint c; | |
1146 | bool fcnPre; | |
1147 | bool post; | |
1148 | arithType ar; | |
1149 | ||
1150 | constraintExpr lexpr; | |
1151 | constraintExpr expr; | |
28bf4b0b | 1152 | |
920a3797 | 1153 | |
1154 | char * s; | |
1155 | ||
1156 | char *os; | |
1157 | ||
3be9a165 | 1158 | os = mstring_create (MAX_DUMP_LINE_LENGTH); |
920a3797 | 1159 | |
bb7c2085 | 1160 | s = fgets (os, MAX_DUMP_LINE_LENGTH, f); |
920a3797 | 1161 | |
72704d73 | 1162 | if (! mstring_isDefined(s) ) |
1163 | { | |
1164 | llfatalbug(message("Library file is corrupted") ); | |
1165 | } | |
920a3797 | 1166 | |
28bf4b0b | 1167 | fcnPre = (bool) reader_getInt (&s); |
bb7c2085 | 1168 | advanceField (&s); |
28bf4b0b | 1169 | post = (bool) reader_getInt (&s); |
bb7c2085 | 1170 | advanceField (&s); |
28bf4b0b | 1171 | ar = (arithType) reader_getInt (&s); |
920a3797 | 1172 | |
bb7c2085 | 1173 | s = fgets (os, MAX_DUMP_LINE_LENGTH, f); |
920a3797 | 1174 | |
72704d73 | 1175 | if (! mstring_isDefined(s) ) |
1176 | { | |
1177 | llfatalbug(message("Library file is corrupted") ); | |
1178 | } | |
1179 | ||
28bf4b0b | 1180 | reader_checkChar (&s, 'l'); |
920a3797 | 1181 | |
1182 | lexpr = constraintExpr_undump (f); | |
1183 | ||
bb7c2085 | 1184 | s = fgets (os, MAX_DUMP_LINE_LENGTH, f); |
920a3797 | 1185 | |
28bf4b0b | 1186 | reader_checkChar (&s, 'r'); |
72704d73 | 1187 | |
1188 | if (! mstring_isDefined(s) ) | |
1189 | { | |
1190 | llfatalbug(message("Library file is corrupted") ); | |
1191 | } | |
1192 | ||
920a3797 | 1193 | expr = constraintExpr_undump (f); |
1194 | ||
bb7c2085 | 1195 | c = constraint_makeNew (); |
920a3797 | 1196 | |
1197 | c->fcnPre = fcnPre; | |
1198 | c->post = post; | |
1199 | c->ar = ar; | |
1200 | ||
1201 | c->lexpr = lexpr; | |
1202 | c->expr = expr; | |
1203 | ||
bb7c2085 | 1204 | free (os); |
1205 | c = constraint_preserveOrig (c); | |
920a3797 | 1206 | return c; |
1207 | } | |
1208 | ||
1209 | ||
1210 | void constraint_dump (/*@observer@*/ constraint c, FILE *f) | |
1211 | { | |
1212 | bool fcnPre; | |
1213 | bool post; | |
1214 | arithType ar; | |
1215 | ||
1216 | constraintExpr lexpr; | |
1217 | constraintExpr expr; | |
28bf4b0b | 1218 | |
72704d73 | 1219 | llassert (constraint_isDefined (c) ); |
1220 | ||
920a3797 | 1221 | fcnPre = c->fcnPre; |
1222 | post = c->post; | |
1223 | ar = c->ar; | |
1224 | lexpr = c->lexpr; | |
1225 | expr = c->expr; | |
1226 | ||
bb7c2085 | 1227 | fprintf (f, "%d@%d@%d\n", (int) fcnPre, (int) post, (int) ar); |
1228 | fprintf (f,"l\n"); | |
920a3797 | 1229 | constraintExpr_dump (lexpr, f); |
bb7c2085 | 1230 | fprintf (f,"r\n"); |
920a3797 | 1231 | constraintExpr_dump (expr, f); |
1232 | } | |
1233 | ||
1234 | ||
f4ec8018 | 1235 | int constraint_compare (/*@observer@*/ /*@temp@*/ const constraint * c1, /*@observer@*/ /*@temp@*/ const constraint * c2) /*@*/ |
02984642 | 1236 | { |
1237 | fileloc loc1, loc2; | |
1238 | ||
1239 | int ret; | |
1240 | ||
bb7c2085 | 1241 | llassert (constraint_isDefined (*c1)); |
1242 | llassert (constraint_isDefined (*c2)); | |
02984642 | 1243 | |
bb7c2085 | 1244 | if (constraint_isUndefined (*c1)) |
02984642 | 1245 | { |
bb7c2085 | 1246 | if (constraint_isUndefined (*c2)) |
02984642 | 1247 | return 0; |
1248 | else | |
1249 | return 1; | |
1250 | } | |
1251 | ||
bb7c2085 | 1252 | if (constraint_isUndefined (*c2)) |
02984642 | 1253 | { |
1254 | return -1; | |
1255 | } | |
1256 | ||
bb7c2085 | 1257 | loc1 = constraint_getFileloc (*c1); |
1258 | loc2 = constraint_getFileloc (*c2); | |
02984642 | 1259 | |
bb7c2085 | 1260 | ret = fileloc_compare (loc1, loc2); |
02984642 | 1261 | |
bb7c2085 | 1262 | fileloc_free (loc1); |
1263 | fileloc_free (loc2); | |
02984642 | 1264 | |
1265 | return ret; | |
1266 | } | |
1267 | ||
1268 | ||
84380658 | 1269 | bool constraint_isPost (/*@observer@*/ /*@temp@*/ constraint c) |
1270 | { | |
bb7c2085 | 1271 | llassert (constraint_isDefined (c)); |
84380658 | 1272 | |
bb7c2085 | 1273 | if (constraint_isUndefined (c)) |
84380658 | 1274 | return FALSE; |
1275 | ||
1276 | return (c->post); | |
1277 | } | |
a779b61e | 1278 | |
1279 | ||
bb7c2085 | 1280 | static int constraint_getDepth (/*@observer@*/ /*@temp@*/ constraint c) |
a779b61e | 1281 | { |
1282 | int l , r; | |
72704d73 | 1283 | |
1284 | llassert (constraint_isDefined (c) ); | |
1285 | ||
bb7c2085 | 1286 | l = constraintExpr_getDepth (c->lexpr); |
1287 | r = constraintExpr_getDepth (c->expr); | |
a779b61e | 1288 | |
1289 | if (l > r) | |
1290 | { | |
bb7c2085 | 1291 | DPRINTF (( message ("constraint depth returning %d for %s", l, constraint_print (c)))); |
a779b61e | 1292 | return l; |
1293 | } | |
1294 | else | |
1295 | { | |
bb7c2085 | 1296 | DPRINTF (( message ("constraint depth returning %d for %s", r, constraint_print (c)))); |
a779b61e | 1297 | return r; |
1298 | } | |
1299 | } | |
1300 | ||
1301 | ||
1302 | bool constraint_tooDeep (/*@observer@*/ /*@temp@*/ constraint c) | |
1303 | { | |
1304 | int temp; | |
1305 | ||
bb7c2085 | 1306 | temp = constraint_getDepth (c); |
a779b61e | 1307 | |
bb7c2085 | 1308 | if (temp >= 20) |
a779b61e | 1309 | { |
1310 | return TRUE; | |
1311 | } | |
1312 | ||
1313 | return FALSE; | |
1314 | ||
1315 | } | |
fba0ed37 | 1316 | |
1317 | /*drl added 12/19/2002*/ | |
1318 | /*whether constraints consist only of | |
1319 | terms which are constants*/ | |
1320 | bool constraint_isConstantOnly (constraint c) | |
1321 | { | |
1322 | bool l, r; | |
72704d73 | 1323 | |
1324 | llassert (constraint_isDefined (c) ); | |
1325 | ||
fba0ed37 | 1326 | l = constraintExpr_isConstantOnly(c->lexpr); |
1327 | r = constraintExpr_isConstantOnly(c->expr); | |
1328 | ||
1329 | if (l && r) | |
1330 | { | |
1331 | return TRUE; | |
1332 | } | |
1333 | ||
1334 | else | |
1335 | { | |
1336 | return FALSE; | |
1337 | } | |
1338 | ||
1339 | } |