gcc/testsuite/gcc.dg/Walloc-size-1.c

   1 /* Tests the warnings for insufficient allocation size.
   2    { dg-do compile }
   3    { dg-options "-Walloc-size" }
   4  * */
   5
   6 struct b { int x[10]; };
   7
   8 void fo0(void)
   9 {
  10         struct b *p = __builtin_malloc(sizeof *p);
  11 }
  12
  13 void fo1(void)
  14 {
  15         struct b *p = __builtin_malloc(sizeof p);       /* { dg-warning "allocation of insufficient size" } */
  16 }
  17
  18 void fo2(void)
  19 {
  20         struct b *p = __builtin_alloca(sizeof p);       /* { dg-warning "allocation of insufficient size" } */
  21 }
  22
  23 void fo3(void)
  24 {
  25         struct b *p = __builtin_calloc(1, sizeof p);    /* { dg-warning "allocation of insufficient size" } */
  26 }
  27
  28 void g(struct b* p);
  29
  30 void fo4(void)
  31 {
  32         g(__builtin_malloc(4));                         /* { dg-warning "allocation of insufficient size" } */
  33 }
  34