gcc/testsuite/gcc.dg/torture/stackalign/alloca-1.c

   1 /* { dg-do run } */
   2 /* { dg-skip-if "Stack alignment is too small" { hppa*-*-hpux* } } */
   3 /* { dg-require-effective-target alloca } */
   4
   5 #include "check.h"
   6
   7 #ifndef ALIGNMENT
   8 #define ALIGNMENT       64
   9 #endif
  10
  11 typedef int aligned __attribute__((aligned(ALIGNMENT)));
  12
  13 int global;
  14
  15 void
  16 bar (char *p, int size)
  17 {
  18   __builtin_strncpy (p, "good", size);
  19 }
  20
  21 void
  22 foo (int size)
  23 {
  24   char *p = __builtin_alloca (size + 1);
  25   aligned i;
  26
  27   bar (p, size);
  28   if (__builtin_strncmp (p, "good", size) != 0)
  29     {
  30 #ifdef DEBUG
  31       p[size] = '\0';
  32       printf ("Failed: %s != good\n", p);
  33 #endif
  34       abort ();
  35     }
  36
  37   if (check_int (&i,  __alignof__(i)) != i)
  38     abort ();
  39 }
  40
  41 int
  42 main()
  43 {
  44   foo (5);
  45   return 0;
  46 }