gcc/testsuite/gcc.dg/990424-1.c

   1 /* Test that stack alignment is preserved with pending_stack_adjust
   2    with stdcall functions.  */
   3
   4 /* { dg-do run { target i?86-*-* } } */
   5 /* { dg-options -mpreferred-stack-boundary=4 } */
   6
   7 void __attribute__((stdcall)) foo(int a, int b, int c);
   8
   9 extern void abort (void);
  10 extern void exit (int);
  11
  12 int
  13 main ()
  14 {
  15   foo(1, 2, 3);
  16   foo(1, 2, 3);
  17   exit (0);
  18 }
  19
  20 void __attribute__((stdcall))
  21 foo(int a, int b, int c)
  22 {
  23   static int last_align = -1;
  24   int dummy, align = (int)&dummy & 15;
  25   if (last_align < 0)
  26     last_align = align;
  27   else if (align != last_align)
  28     abort ();
  29 }