1 // RUN: %clang_cc1 -fsyntax-only -verify %s -std=c++11
2
3 struct A {
4 operator int&();
5 operator long*& ();
6 };
7
8 struct B {
9 operator long&();
10 operator int*& ();
11 };
12
13 struct C : B, A { };
14
test(C c)15 void test(C c) {
16 ++c; // expected-error {{use of overloaded operator '++' is ambiguous}}\
17 // expected-note {{built-in candidate operator++(int &)}} \
18 // expected-note {{built-in candidate operator++(long &)}} \
19 // expected-note {{built-in candidate operator++(long *&)}} \
20 // expected-note {{built-in candidate operator++(int *&)}}
21 }
22
23 struct A1 { operator volatile int&(); };
24
25 struct B1 { operator volatile long&(); };
26
27 struct C1 : B1, A1 { };
28
test(C1 c)29 void test(C1 c) {
30 ++c; // expected-error {{use of overloaded operator '++' is ambiguous}} \
31 // expected-note {{built-in candidate operator++(volatile int &)}} \
32 // expected-note {{built-in candidate operator++(volatile long &)}}
33 }
34
35