1  /*
       2    { dg-options "-Wuninitialized -ftrack-macro-expansion=2" }
       3    { dg-do compile }
       4  */
       5  
       6  void f (unsigned);
       7  
       8  #define CODE_WITH_WARNING \
       9    int a; /* { dg-message "was declared here" } */	 \
      10    f (a)	 /* { dg-error "used uninitialized" } */
      11  
      12  #pragma GCC diagnostic ignored "-Wuninitialized"
      13  
      14  void
      15  g (void)
      16  {
      17    /* No warning expected here since the #pragma is in effect.  */
      18    CODE_WITH_WARNING;
      19  }
      20  
      21  #pragma GCC diagnostic error "-Wuninitialized"
      22  
      23  void
      24  h (void)
      25  {
      26    CODE_WITH_WARNING; /* { dg-message "in expansion of macro 'CODE_WITH_WARNING'" } */
      27  }
      28  
      29  /* { dg-regexp {.*some warnings being treated as errors} } */