gcc/testsuite/gcc.dg/transparent-union-6.c

   1 /* PR c/54391 - transparent_union typedef'ing inconsistent
   2    { dg-do compile }
   3    { dg-options "-Wall" } */
   4
   5 typedef union m30_u m30_t;
   6
   7 union __attribute__((transparent_union)) m30_u {
   8   int u;
   9 };
  10
  11 double make_double (m30_t);
  12
  13 double f (void)
  14 {
  15   int bar = 17;
  16   return make_double (bar);
  17 }