gcc/testsuite/gcc.dg/torture/stackalign/nested-3.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 extern int strncmp (const char *, const char *, size_t);
  13
  14 int global;
  15
  16 void
  17 copy (char *p, int size)
  18 {
  19   __builtin_strncpy (p, "good", size);
  20 }
  21
  22 void
  23 foo (int size)
  24 {
  25   aligned j;
  26
  27    __attribute__ ((__noinline__))
  28   void bar (int size)
  29     {
  30       char *p = __builtin_alloca (size + 1);
  31       aligned i;
  32
  33       copy (p, size);
  34       if (strncmp (p, "good", size) != 0)
  35         {
  36 #ifdef DEBUG
  37           p[size] = '\0';
  38           printf ("Failed: %s != good\n", p);
  39 #endif
  40           abort ();
  41         }
  42
  43       if (check_int (&i,  __alignof__(i)) != i)
  44         abort ();
  45
  46       if (check_int (&j,  __alignof__(j)) != j)
  47         abort ();
  48
  49       j = -20;
  50     }
  51   bar (size);
  52
  53   if (j != -20)
  54     abort ();
  55
  56   if (check_int (&j,  __alignof__(j)) != j)
  57     abort ();
  58 }
  59
  60 int
  61 main()
  62 {
  63   foo (5);
  64   return 0;
  65 }