default-expr-arguments.cpp revision 9351c173cd538f7f7c28af1494ac7e68b815b0e8
19351c173cd538f7f7c28af1494ac7e68b815b0e8Anders Carlsson// RUN: clang-cc -fsyntax-only -verify %s 29351c173cd538f7f7c28af1494ac7e68b815b0e8Anders Carlsson 39351c173cd538f7f7c28af1494ac7e68b815b0e8Anders Carlssonstruct S { }; 49351c173cd538f7f7c28af1494ac7e68b815b0e8Anders Carlsson 59351c173cd538f7f7c28af1494ac7e68b815b0e8Anders Carlssontemplate<typename T> void f1(T a, T b = 10) { } // expected-error{{cannot initialize 'b' with an rvalue of type 'int'}} 69351c173cd538f7f7c28af1494ac7e68b815b0e8Anders Carlsson 79351c173cd538f7f7c28af1494ac7e68b815b0e8Anders Carlssontemplate<typename T> void f2(T a, T b = T()) { } 89351c173cd538f7f7c28af1494ac7e68b815b0e8Anders Carlsson 99351c173cd538f7f7c28af1494ac7e68b815b0e8Anders Carlssontemplate<typename T> void f3(T a, T b = T() + T()); // expected-error{{invalid operands to binary expression ('struct S' and 'struct S')}} 109351c173cd538f7f7c28af1494ac7e68b815b0e8Anders Carlsson 119351c173cd538f7f7c28af1494ac7e68b815b0e8Anders Carlssonvoid g() { 129351c173cd538f7f7c28af1494ac7e68b815b0e8Anders Carlsson f1(10); 139351c173cd538f7f7c28af1494ac7e68b815b0e8Anders Carlsson f1(S()); // expected-note{{in instantiation of default argument for 'f1<struct S>' required here}} 149351c173cd538f7f7c28af1494ac7e68b815b0e8Anders Carlsson 159351c173cd538f7f7c28af1494ac7e68b815b0e8Anders Carlsson f2(10); 169351c173cd538f7f7c28af1494ac7e68b815b0e8Anders Carlsson f2(S()); 179351c173cd538f7f7c28af1494ac7e68b815b0e8Anders Carlsson 189351c173cd538f7f7c28af1494ac7e68b815b0e8Anders Carlsson f3(10); 199351c173cd538f7f7c28af1494ac7e68b815b0e8Anders Carlsson f3(S()); // expected-note{{in instantiation of default argument for 'f3<struct S>' required here}} 209351c173cd538f7f7c28af1494ac7e68b815b0e8Anders Carlsson} 21