1  /* Test for -Wtraditional warnings on union initialization.
       2     Note, gcc should omit these warnings in system header files.
       3     By Kaveh R. Ghazi <ghazi@caip.rutgers.edu> 8/22/2000.  */
       4  /* { dg-do compile } */
       5  /* { dg-options "-Wtraditional" } */
       6  
       7  union foo
       8  {
       9    int i;
      10    long l;
      11  };
      12  
      13  void
      14  testfunc ()
      15  {
      16    /* Note we only warn for nonzero initializers.  */
      17    static union foo f1 = { 0 };
      18    static union foo f2 = { 1 }; /* { dg-warning "traditional C rejects initialization of unions" "initialization of unions" } */
      19  
      20  # 21 "sys-header.h" 3
      21  /* We are in system headers now, no -Wtraditional warnings should issue.  */
      22  
      23    static union foo f3 = { 0 };
      24    static union foo f4 = { 1 };
      25  }