gcc/testsuite/gcc.dg/misaligned-expand-2.c

   1 /* Test that expand can generate correct stores to misaligned data even on
   2    strict alignment platforms.  */
   3
   4 /* { dg-do run } */
   5 /* { dg-options "-O0" } */
   6
   7 extern void abort ();
   8
   9 typedef unsigned int myint __attribute__((aligned(1)));
  10
  11 void
  12 foo (myint *p, unsigned int i)
  13 {
  14   *p = i;
  15 }
  16
  17 #define cst (int) 0xdeadbeef
  18 #define NUM 8
  19
  20 struct blah
  21 {
  22   char c;
  23   myint i[NUM];
  24 };
  25
  26 struct blah g;
  27
  28 int
  29 main (int argc, char **argv)
  30 {
  31   int k;
  32
  33   for (k = 0; k < NUM; k++)
  34     {
  35       foo (&g.i[k], cst);
  36       if (g.i[k] != cst)
  37         abort ();
  38     }
  39   return 0;
  40 }