default-expr-arguments.cpp revision 8644aecd4383ce829d1eed81e96399904a948362 
1// RUN: clang-cc -fsyntax-only -verify %s
2
3struct S { };
4
5template<typename T> void f1(T a, T b = 10) { } // expected-error{{cannot initialize 'b' with an rvalue of type 'int'}}
6
7template<typename T> void f2(T a, T b = T()) { }
8
9template<typename T> void f3(T a, T b = T() + T()); // expected-error{{invalid operands to binary expression ('struct S' and 'struct S')}}
10
11void g() {
12  f1(10);
13  f1(S()); // expected-note{{in instantiation of default argument for 'f1<struct S>' required here}}
14
15  f2(10);
16  f2(S());
17
18  f3(10);
19  f3(S()); // expected-note{{in instantiation of default argument for 'f3<struct S>' required here}}
20}
21
22template<typename T> struct F {
23	F(T t = 10);
24};
25
26void g2() {
27	F<int> f;
28}
29