1 // { dg-do assemble }
2 // { dg-options "-Wconversion" }
3 // Test that we resolve this case as mandated by the standard, but also
4 // warn about it. We choose op char* not because it is a member of B --
5 // the standard says that all conversion ops are treated as coming from
6 // the type of the argument -- but because it is non-const.
7
8 struct A {
9 operator const char *() const { return ""; }
10 };
11
12 struct B : public A {
13 operator char *() { return 0; }
14 };
15
main()16 int main()
17 {
18 B b;
19 if ((const char *)b != 0) // { dg-warning "choosing 'B" "B" } surprising overload resolution
20 // { dg-warning "for conversion" "conv" { target *-*-* } 19 }
21 // { dg-message "note" "note" { target *-*-* } 19 }
22 return 1;
23 if ((const char *)(const B)b == 0)
24 return 2;
25 if ((const char *)(const B &)b == 0)
26 return 3;
27 }
28