1  /* { dg-do compile } */
       2  /* { dg-options "-fshow-column -std=gnu89" } */
       3  /* test redeclarations with void and implicit int */
       4  extern foo1(); /* { dg-message "8:note: previous declaration" } */
       5  extern void foo1(); /* { dg-error "13:conflicting types" } */
       6  
       7  extern void foo2(); /* { dg-message "13:note: previous declaration" } */
       8  extern foo2(); /* { dg-error "8:conflicting types" } */
       9  
      10  void foo3() {} /* { dg-message "6:note: previous definition" } */
      11  extern foo3(); /* { dg-error "8:conflicting types" } */
      12  
      13  extern foo4(); /* { dg-message "8:note: previous declaration" } */
      14  void foo4() {} /* { dg-error "6:conflicting types" } */
      15  
      16  extern void foo5(); /* { dg-message "13:note: previous declaration" } */
      17  foo5() {} /* { dg-warning "1:conflicting types" } */
      18  
      19  foo6() {} /* { dg-message "1:note: previous definition" } */
      20  extern void foo6(); /* { dg-error "13:conflicting types" } */
      21  
      22  foo7() {} /* { dg-message "1:note: previous definition" } */
      23  void foo7() {} /* { dg-error "6:conflicting types" } */
      24  
      25  void foo8() {} /* { dg-message "6:note: previous definition" } */
      26  foo8() {} /* { dg-error "1:conflicting types" } */
      27  
      28  int use9() { foo9(); } /* { dg-message "note: previous implicit declaration" } */
      29  extern void foo9(); /* { dg-warning "13:conflicting types" } */
      30  
      31  int use10() { foo10(); } /* { dg-message "note: previous implicit declaration" } */
      32  void foo10() {} /* { dg-warning "6:conflicting types" } */
      33