gcc/testsuite/c-c++-common/transparent-union-1.c

   1 /* PR c++/51228 */
   2 /* { dg-options "-Wno-c++-compat" { target c } } */
   3
   4 typedef union {} U __attribute__((transparent_union)); /* { dg-warning "ignored" } */
   5
   6 void foo(U u) {}