gcc/testsuite/c-c++-common/attr-may-alias-2.c

   1 /* We used to reject this because types differentiating only in
   2    TYPE_REF_CAN_ALIAS_ALL were deemed incompatible.  */
   3 /* { dg-do compile } */
   4
   5 struct sockaddr;
   6 struct sockaddr *f (void);
   7
   8 struct __attribute__((may_alias)) sockaddr { int j; };
   9 struct sockaddr *
  10 f (void)
  11 {
  12   return
  13 #ifndef __cplusplus
  14     (void *)
  15 #endif
  16     0;
  17 }