gcc/testsuite/gcc.dg/pr48335-6.c

   1 /* PR middle-end/48335 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -fno-tree-sra" } */
   4
   5 typedef long long T __attribute__((may_alias, aligned (1)));
   6 typedef short U __attribute__((may_alias, aligned (1)));
   7
   8 struct S
   9 {
  10   _Complex float d __attribute__((aligned (8)));
  11 };
  12
  13 T
  14 f1 (struct S x)
  15 {
  16   struct S s = x;
  17   return *(T *) ((char *) &s.d + 1);
  18 }
  19
  20 int
  21 f2 (struct S x)
  22 {
  23   struct S s = x;
  24   return ((U *)((char *) &s.d + 1))[0];
  25 }
  26
  27 int
  28 f3 (struct S x)
  29 {
  30   struct S s = x;
  31   return ((U *)((char *) &s.d + 1))[1];
  32 }
  33
  34 int
  35 f4 (struct S x)
  36 {
  37   struct S s = x;
  38   return ((U *)((char *) &s.d + 1))[2];
  39 }
  40
  41 int
  42 f5 (struct S x)
  43 {
  44   struct S s = x;
  45   return ((U *)((char *) &s.d + 1))[3];
  46 }