gcc/testsuite/gcc.dg/misaligned-expand-3.c

   1 /* Test that expand can generate correct stores to misaligned data of complex
   2    type even on strict alignment platforms.  */
   3
   4 /* { dg-do run } */
   5 /* { dg-options "-O0" } */
   6
   7 extern void abort ();
   8
   9 typedef _Complex float mycmplx __attribute__((aligned(1)));
  10
  11 void
  12 foo (mycmplx *p, float r, float i)
  13 {
  14   __real__ *p = r;
  15   __imag__ *p = i;
  16 }
  17
  18 #define cvr 3.2f
  19 #define cvi 2.5f
  20 #define NUM 8
  21
  22 struct blah
  23 {
  24   char c;
  25   mycmplx x[NUM];
  26 } __attribute__((packed));
  27
  28 struct blah g;
  29
  30 int
  31 main (int argc, char **argv)
  32 {
  33   int k;
  34
  35   for (k = 0; k < NUM; k++)
  36     {
  37       foo (&g.x[k], cvr, cvi);
  38       if (__real__ g.x[k] != cvr
  39           || __imag__ g.x[k] != cvi)
  40         abort ();
  41     }
  42   return 0;
  43 }