gcc/testsuite/gcc.target/i386/990424-1.c

   1 /* Test that stack alignment is preserved with pending_stack_adjust
   2    with stdcall functions.  */
   3
   4 /* { dg-do run } */
   5 /* { dg-require-effective-target ilp32 } */
   6 /* { dg-options -mpreferred-stack-boundary=4 } */
   7
   8 void __attribute__((stdcall)) foo(int a, int b, int c);
   9
  10 extern void abort (void);
  11 extern void exit (int);
  12
  13 int
  14 main ()
  15 {
  16   foo(1, 2, 3);
  17   foo(1, 2, 3);
  18   exit (0);
  19 }
  20
  21 void __attribute__((stdcall))
  22 foo(int a, int b, int c)
  23 {
  24   static int last_align = -1;
  25   int dummy, align = (int)&dummy & 15;
  26   if (last_align < 0)
  27     last_align = align;
  28   else if (align != last_align)
  29     abort ();
  30 }