gcc/testsuite/gcc.dg/Walloca-7.c

   1 /* { dg-do compile } */
   2 /* { dg-require-effective-target alloca } */
   3 /* { dg-options "-Walloca -O0" } */
   4
   5 extern void f(void *);
   6
   7 void foo(void)
   8 {
   9   // Test that strict -Walloca works even without optimization.
  10   f (__builtin_alloca(500)); // { dg-warning "use of 'alloca'" }
  11 }
  12
  13 void bar(void)
  14 {
  15   // Test that we warn on alloca() calls, not just __builtin_alloca calls.
  16   extern void *alloca(__SIZE_TYPE__);
  17   f (alloca (123)); // { dg-warning "use of 'alloca'" }
  18 }