gcc/testsuite/gcc.dg/stack-usage-2.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-Wstack-usage=512" } */
   3
   4 int foo1 (void)
   5 {
   6   char arr[16];
   7   arr[0] = 1;
   8   return 0;
   9 } /* { dg-bogus "stack usage" } */
  10
  11 int foo2 (void)
  12 {
  13   char arr[1024];
  14   arr[0] = 1;
  15   return 0;
  16 } /* { dg-warning "stack usage is \[0-9\]* bytes" } */
  17
  18 int foo3 (void)
  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 } /* { dg-warning "stack usage might be \[0-9\]* bytes" } */
  27
  28 int foo4 (int n)
  29 {
  30   char arr[n];
  31   arr[0] = 1;
  32   return 0;
  33 } /* { dg-warning "stack usage might be unbounded" } */