gcc/testsuite/gcc.dg/torture/stackalign/vararg-2.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 <stdarg.h>
   6 #include "check.h"
   7
   8 #ifndef ALIGNMENT
   9 #define ALIGNMENT       64
  10 #endif
  11
  12 typedef int aligned __attribute__((aligned(ALIGNMENT)));
  13
  14 int global;
  15
  16 void
  17 bar (char *p, int size)
  18 {
  19   __builtin_strncpy (p, "good", size);
  20 }
  21
  22 void
  23 test (va_list arg)
  24 {
  25   char *p;
  26   aligned i;
  27   int size;
  28   double x;
  29
  30   size = va_arg (arg, int);
  31   if (size != 5)
  32     abort ();
  33
  34   p = __builtin_alloca (size + 1);
  35
  36   x = va_arg (arg, double);
  37   if (x != 5.0)
  38     abort ();
  39
  40   bar (p, size);
  41   if (__builtin_strncmp (p, "good", size) != 0)
  42     {
  43 #ifdef DEBUG
  44       p[size] = '\0';
  45       printf ("Failed: %s != good\n", p);
  46 #endif
  47       abort ();
  48     }
  49
  50   if (check_int (&i,  __alignof__(i)) != i)
  51     abort ();
  52 }
  53
  54 void
  55 foo (const char *fmt, ...)
  56 {
  57   va_list arg;
  58   va_start (arg, fmt);
  59   test (arg);
  60   va_end (arg);
  61 }
  62 int
  63 main()
  64 {
  65   foo ("foo", 5, 5.0);
  66   return 0;
  67 }