gcc/testsuite/gcc.c-torture/execute/nest-align-1.c

   1 /* Test for alignment handling when a variable is accessed by nested
   2    function.  */
   3 /* Origin: Joey Ye <joey.ye@intel.com> */
   4
   5 /* Force bigger stack alignment for PowerPC EABI targets.  */
   6 /* { dg-options "-mno-eabi" { target powerpc-*-eabi* } } */
   7
   8 #include <stddef.h>
   9
  10 typedef int aligned __attribute__((aligned));
  11 extern void abort (void);
  12
  13 void
  14 check (int *i)
  15 {
  16   *i = 20;
  17   if ((((ptrdiff_t) i) & (__alignof__(aligned) - 1)) != 0)
  18     abort ();
  19 }
  20
  21 void
  22 foo (void)
  23 {
  24   aligned jj;
  25   void bar ()
  26     {
  27       jj = -20;
  28     }
  29   jj = 0;
  30   bar ();
  31   if (jj != -20)
  32     abort ();
  33   check (&jj);
  34   if (jj != 20)
  35     abort ();
  36 }
  37
  38 int
  39 main()
  40 {
  41   foo ();
  42   return 0;
  43 }