gcc/testsuite/gcc.dg/torture/stackalign/ret-struct-1.c

   1 /* { dg-do run } */
   2 /* { dg-skip-if "Stack alignment is too small" { hppa*-*-hpux* } "*" "" } */
   3 /* { dg-skip-if "Stack alignment causes use of alloca" { nvptx-*-* } "*" "" } */
   4
   5 #include "check.h"
   6
   7 #ifndef ALIGNMENT
   8 #define ALIGNMENT       64
   9 #endif
  10
  11 extern void abort();
  12 typedef struct my_struct
  13 {
  14         char str[31];
  15 } stype ;
  16
  17 stype g_s;
  18
  19 stype __attribute__((noinline))
  20 foo (char arg1, char arg2, char arg3)
  21 {
  22         stype __attribute__((aligned(ALIGNMENT))) s;
  23         s.str[0] = arg1;
  24         s.str[1] = arg2;
  25         s.str[30] = arg3;
  26         check(&s, ALIGNMENT);
  27         return s;
  28 }
  29
  30 int main()
  31 {
  32         g_s = foo(1,2,3);
  33
  34         if (g_s.str[0] != 1 || g_s.str[1] != 2 || g_s.str[30] !=3)
  35           abort();
  36         return 0;
  37 }