gcc-4_9-branch/gcc/testsuite/gcc.dg/stack-usage-2.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-Wstack-usage=512" } */
   3
   4 int foo1 (void)  /* { dg-bogus "stack usage" } */
   5 {
   6   char arr[16];
   7   arr[0] = 1;
   8   return 0;
   9 }
  10
  11 int foo2 (void)  /* { dg-warning "stack usage is \[0-9\]* bytes" } */
  12 {
  13   char arr[1024];
  14   arr[0] = 1;
  15   return 0;
  16 }
  17
  18 int foo3 (void) /* { dg-warning "stack usage might be \[0-9\]* bytes" } */
  19 {
  20   char arr[1024] __attribute__((aligned (512)));
  21   arr[0] = 1;
  22   /* Force dynamic realignment of argument pointer.  */
  23   __builtin_apply ((void (*)()) foo2, 0, 0);
  24   return 0;
  25 }
  26
  27 int foo4 (int n) /* { dg-warning "stack usage might be unbounded" } */
  28 {
  29   char arr[n];
  30   arr[0] = 1;
  31   return 0;
  32 }