gcc/testsuite/gcc.dg/packed-vla.c

   1 /* PR middle-end/27945 */
   2 /* { dg-do run } */
   3 /* { dg-options "" } */
   4
   5 extern int printf (const char *, ...);
   6 extern void abort ();
   7
   8 int func(int levels)
   9 {
  10   struct bar {
  11     unsigned char       a;
  12     int                 b[levels];
  13   } __attribute__ ((__packed__)) bar;
  14
  15   struct foo {
  16     unsigned char       a;
  17     int                 b[4];
  18   } __attribute__ ((__packed__)) foo;
  19
  20   printf("foo %d\n", sizeof(foo));
  21   printf("bar %d\n", sizeof(bar));
  22
  23   if (sizeof (foo) != sizeof (bar))
  24     abort ();
  25 }
  26
  27 int main()
  28 {
  29   func(4);
  30   return 0;
  31 }