2 ** LCLint - annotation-assisted static program checker
3 ** Copyright (C) 1994-2001 University of Virginia,
4 ** Massachusetts Institute of Technology
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.
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.
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.
20 ** For information on lclint: lclint-request@cs.virginia.edu
21 ** To report a bug: lclint-bug@cs.virginia.edu
22 ** For more information: http://lclint.cs.virginia.edu
28 # include "lclintMacros.nf"
31 static /*@notnull@*/ stateClauseList stateClauseList_new (void)
33 stateClauseList s = (stateClauseList) dmalloc (sizeof (*s));
36 s->nspace = stateClauseListBASESIZE;
37 s->elements = (stateClause *)
38 dmalloc (sizeof (*s->elements) * stateClauseListBASESIZE);
44 stateClauseList_grow (stateClauseList s)
47 stateClause *newelements;
49 llassert (stateClauseList_isDefined (s));
51 s->nspace += stateClauseListBASESIZE;
53 newelements = (stateClause *)
54 dmalloc (sizeof (*newelements) * (s->nelements + s->nspace));
56 for (i = 0; i < s->nelements; i++)
58 newelements[i] = s->elements[i];
62 s->elements = newelements;
65 stateClauseList stateClauseList_add (stateClauseList s, stateClause el)
67 DPRINTF (("Adding: %s", stateClause_unparse (el)));
69 if (stateClauseList_isUndefined (s))
71 s = stateClauseList_new ();
75 stateClauseList_elements (s, cl)
77 if (stateClause_sameKind (cl, el))
81 message ("Multiple %q clauses for one function (ignoring second)",
82 stateClause_unparseKind (cl)),
85 stateClause_free (el);
88 } end_stateClauseList_elements ;
93 stateClauseList_grow (s);
97 s->elements[s->nelements] = el;
103 cstring stateClauseList_unparse (stateClauseList s)
105 cstring st = cstring_undefined;
108 if (stateClauseList_isDefined (s))
110 for (i = 0; i < stateClauseList_size (s); i++)
114 st = message ("%q;", stateClause_unparse (s->elements[i]));
117 st = message ("%q %q;", st, stateClause_unparse (s->elements[i]));
124 stateClauseList stateClauseList_copy (stateClauseList s)
126 if (stateClauseList_isDefined (s))
128 stateClauseList t = (stateClauseList) dmalloc (sizeof (*t));
131 t->nelements = s->nelements;
134 if (s->nelements > 0)
136 t->elements = (stateClause *) dmalloc (sizeof (*t->elements) * t->nelements);
137 for (i = 0; i < s->nelements; i++)
139 t->elements[i] = stateClause_copy (s->elements[i]);
151 return stateClauseList_undefined;
156 stateClauseList_free (stateClauseList s)
158 if (!stateClauseList_isUndefined (s))
162 for (i = 0; i < s->nelements; i++)
164 stateClause_free (s->elements[i]);
172 cstring stateClauseList_dump (stateClauseList s)
174 cstring st = cstring_undefined;
176 if (stateClauseList_isUndefined (s)) return st;
178 stateClauseList_elements (s, current)
180 st = message ("%q%q$", st, stateClause_dump (current));
181 } end_stateClauseList_elements;
186 stateClauseList stateClauseList_undump (char **s)
189 stateClauseList pn = stateClauseList_new ();
194 while (c != '#' && c != '@')
196 stateClause sc = stateClause_undump (s);
198 pn = stateClauseList_add (pn, sc);
199 reader_checkChar (s, '$');
207 int stateClauseList_compare (stateClauseList s1, stateClauseList s2)
209 if (stateClauseList_isUndefined (s1)
210 && stateClauseList_isUndefined (s2))
216 if ((int) s1 > (int) s2)
227 static /*@exposed@*/ sRefSet
228 stateClauseList_getClause (stateClauseList s, stateClause k)
230 stateClauseList_elements (s, el)
232 if (stateClause_matchKind (el, k))
234 return stateClause_getRefs (el);
236 } end_stateClauseList_elements ;
238 return sRefSet_undefined;
241 void stateClauseList_checkAll (uentry ue)
243 stateClauseList clauses = uentry_getStateClauseList (ue);
244 sRef res = uentry_getSref (ue);
245 bool specialResult = FALSE;
247 DPRINTF (("Check state clauses: %s", uentry_unparseFull (ue)));
249 stateClauseList_elements (clauses, cl)
251 bool isPre = stateClause_isBeforeOnly (cl);
253 if (stateClause_isGlobal (cl))
259 sRefSet refs = stateClause_getRefs (cl);
261 sRefSet_allElements (refs, el)
263 sRef rb = sRef_getRootBase (el);
265 DPRINTF (("Check: %s", sRef_unparse (el)));
267 if (stateClause_setsMetaState (cl))
269 qual q = stateClause_getMetaQual (cl);
270 annotationInfo qa = qual_getAnnotationInfo (q);
272 if (!annotationInfo_matchesContextRef (qa, el))
275 (FLG_ANNOTATIONERROR,
276 message ("Meta state anntation %s used on inappropriate reference %q in %q clause of %q: %q",
279 stateClause_unparseKind (cl),
281 stateClause_unparse (cl)),
282 uentry_whereLast (ue)))
284 /*@i! annotationInfo_showContextError (ainfo, ue); */
289 if (sRef_isResult (rb))
295 message ("Function result is used in %q clause of %q "
296 "(%q applies to the state before function is "
297 "called, so should not use result): %q",
298 stateClause_unparseKind (cl),
300 stateClause_unparseKind (cl),
302 uentry_whereLast (ue));
306 if (!sRef_isStateSpecial (res))
308 DPRINTF (("Here we are: %s", sRef_unparseFull (res)));
312 sstate pstate = sRef_getDefState (res);
314 if (!sRef_makeStateSpecial (res))
318 message ("Function result is used in %q clause of %q "
319 "but was previously annotated with %s: %q",
320 stateClause_unparseKind (cl),
322 sstate_unparse (pstate),
324 uentry_whereLast (ue)))
326 specialResult = TRUE;
332 DPRINTF (("Fixing result type! %s", sRef_unparseFull (el)));
333 (void) sRef_fixResultType (el, sRef_getType (res), ue);
336 else if (sRef_isParam (rb))
338 DPRINTF (("Make special: %s", sRef_unparseFull (rb)));
340 if (!sRef_makeStateSpecial (rb))
342 if (fileloc_isXHFile (uentry_whereLast (ue)))
344 ; /* Okay to override in .xh files */
350 message ("Reference %q used in %q clause of %q, "
351 "but was previously annotated with %s: %q",
353 stateClause_unparseKind (cl),
355 sstate_unparse (sRef_getDefState (res)),
357 uentry_whereLast (ue));
361 DPRINTF (("Made special: %s", sRef_unparseFull (rb)));
363 else if (sRef_isInvalid (rb))
365 /*@innercontinue@*/ continue;
370 /*@innercontinue@*/ continue;
373 if (stateClause_isMemoryAllocation (cl))
375 if (!ctype_isVisiblySharable (sRef_getType (el)))
378 (FLG_ANNOTATIONERROR,
379 /*@-sefparams@*/ /* This is okay because its fresh storage. */ /*@i32@*/
381 ("%q clauses includes %q of "
382 "non-dynamically allocated type %s",
383 cstring_capitalizeFree (stateClause_unparseKind (cl)),
385 ctype_unparse (sRef_getType (el))),
386 uentry_whereLast (ue));
391 } end_sRefSet_allElements ;
393 } end_stateClauseList_elements ;
396 void stateClauseList_checkEqual (uentry old, uentry unew)
398 stateClauseList oldClauses = uentry_getStateClauseList (old);
399 stateClauseList newClauses = uentry_getStateClauseList (unew);
401 if (stateClauseList_isDefined (newClauses))
403 stateClauseList_elements (newClauses, cl)
405 if (stateClause_isGlobal (cl))
411 sRefSet sc = stateClauseList_getClause (oldClauses, cl);
413 if (!sRefSet_equal (sc, stateClause_getRefs (cl)))
417 message ("Function %q %rdeclared with inconsistent %q clause: %q",
418 uentry_getName (old),
419 uentry_isDeclared (old),
420 stateClause_unparseKind (cl),
421 sRefSet_unparsePlain (stateClause_getRefs (cl))),
424 uentry_showWhereLastExtra (old, sRefSet_unparsePlain (sc));
428 } end_stateClauseList_elements ;
430 stateClauseList_elements (oldClauses, cl)
432 if (stateClause_isGlobal (cl))
438 sRefSet sc = stateClauseList_getClause (newClauses, cl);
440 if (sRefSet_isUndefined (sc) && !sRefSet_isEmpty (stateClause_getRefs (cl)))
444 message ("Function %q %rdeclared without %q clause (either "
445 "use no special clauses in redeclaration, or "
446 "they must match exactly: %q",
447 uentry_getName (old),
448 uentry_isDeclared (old),
449 stateClause_unparseKind (cl),
450 sRefSet_unparsePlain (stateClause_getRefs (cl))),
453 uentry_showWhereLastExtra (old, sRefSet_unparsePlain (sc));
457 } end_stateClauseList_elements ;