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> 9/11/2000.  */
       4  /* { dg-do compile } */
       5  /* { dg-options "-Wtraditional" } */
       6  
       7  struct bar
       8  {
       9    int i;
      10    long j;
      11  };
      12  
      13  union foo
      14  {
      15    struct bar b;
      16    int i;
      17    long l;
      18  };
      19  
      20  union foo2
      21  {
      22    int i;
      23    long l;
      24  };
      25  
      26  struct baz
      27  {
      28    int a;
      29    double b;
      30    union foo c;
      31  };
      32  
      33  struct baz2
      34  {
      35    int a;
      36    double b;
      37    union foo2 c;
      38  };
      39  
      40  void
      41  testfunc ()
      42  {
      43    /* Note we only warn for nonzero initializers.  Xfail on substructures. */
      44    static union foo f1 = {{0,0}}; /* { dg-bogus "traditional C rejects initialization of unions" "initialization of unions" { xfail *-*-* } } */
      45    static union foo f2 = {{1,1}}; /* { dg-warning "traditional C rejects initialization of unions" "initialization of unions" } */
      46  
      47    static struct baz f3 = { 1, 2, {{0,0}} }; /* { dg-bogus "traditional C rejects initialization of unions" "initialization of unions" { xfail *-*-* } } */
      48    static struct baz f4 = { 1, 2, {{1,1}} }; /* { dg-warning "traditional C rejects initialization of unions" "initialization of unions" } */
      49  
      50    static struct baz2 f5 = { 1, 2, {0} };
      51    static struct baz2 f6 = { 1, 2, {1} }; /* { dg-warning "traditional C rejects initialization of unions" "initialization of unions" } */
      52  
      53  # 54 "sys-header.h" 3
      54  /* We are in system headers now, no -Wtraditional warnings should issue.  */
      55  
      56    static union foo b1 = {{0,0}};
      57    static union foo b2 = {{1,1}};
      58  
      59    static struct baz b3 = { 1, 2, {{0,0}} };
      60    static struct baz b4 = { 1, 2, {{1,1}} };
      61  
      62    static struct baz2 b5 = { 1, 2, {0} };
      63    static struct baz2 b6 = { 1, 2, {1} };
      64  }