gcc/testsuite/gcc.dg/free-1.c

   1 /* PR c/36970 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2" } */
   4
   5 extern void free (void *);
   6
   7 char *p, buf3[10], d;
   8 struct S { char a; int b; } *r;
   9
  10 void foo (void)
  11 {
  12   char buf[10], buf2[10], c;
  13   static char buf4[10], e;
  14   char *q = buf;
  15   free (p);
  16   free (q);           /* { dg-warning "attempt to free a non-heap object" } */
  17   free (buf2);        /* { dg-warning "attempt to free a non-heap object" } */
  18   free (&c);          /* { dg-warning "attempt to free a non-heap object" } */
  19   free (buf3);        /* { dg-warning "attempt to free a non-heap object" } */
  20   free (&d);          /* { dg-warning "attempt to free a non-heap object" } */
  21   free (buf4);        /* { dg-warning "attempt to free a non-heap object" } */
  22   free (&e);          /* { dg-warning "attempt to free a non-heap object" } */
  23   free (&r->a);
  24   free ("abcd");      /* { dg-warning "attempt to free a non-heap object" } */
  25   free (L"abcd");     /* { dg-warning "attempt to free a non-heap object" } */
  26 }