/* { dg-do compile } */ /* test redeclarations with void and implicit int */ extern foo1(); /* { dg-error "error: previous declaration" } */ extern void foo1(); /* { dg-error "error: conflicting types" } */ extern void foo2(); /* { dg-error "error: previous declaration" } */ extern foo2(); /* { dg-error "error: conflicting types" } */ void foo3() {} /* { dg-error "error: previous definition" } */ extern foo3(); /* { dg-error "error: conflicting types" } */ extern foo4(); /* { dg-error "error: previous declaration" } */ void foo4() {} /* { dg-error "error: conflicting types" } */ extern void foo5(); /* { dg-warning "previous declaration" } */ foo5() {} /* { dg-warning "conflicting types" } */ foo6() {} /* { dg-error "error: previous definition" } */ extern void foo6(); /* { dg-error "error: conflicting types" } */ foo7() {} /* { dg-error "error: previous definition" } */ void foo7() {} /* { dg-error "error: conflicting types" } */ void foo8() {} /* { dg-error "error: previous definition" } */ foo8() {} /* { dg-error "error: conflicting types" } */ int use9() { foo9(); } /* { dg-warning "previous implicit declaration" } */ extern void foo9(); /* { dg-warning "conflicting types" } */ int use10() { foo10(); } /* { dg-warning "previous implicit declaration" } */ void foo10() {} /* { dg-warning "conflicting types" } */