1 // RUN: %clang_cc1 -std=c++11 %s -verify
2 // RUN: %clang_cc1 -std=c++1y %s -verify -DCXX1Y
3 
4 struct X {
5   constexpr int f(); // @5
6   int f();           // @6
7 };
8 
9 #ifdef CXX1Y
10 // FIXME: Detect this situation and provide a better recovery.
11 
12 // expected-error@6 {{class member cannot be redeclared}}
13 // expected-note@5 {{previous}}
14 #else
15 // expected-warning@5 {{'constexpr' non-static member function will not be implicitly 'const' in C++14; add 'const' to avoid a change in behavior}}
16 #endif
17