1 // RUN: %clang_cc1 -verify -std=c++11 %s
2 // RUN: cp %s %t
3 // RUN: %clang_cc1 -x c++ -std=c++11 -fixit %t
4 // RUN: %clang_cc1 -Wall -pedantic-errors -Werror -x c++ -std=c++11 %t
5 // RUN: %clang_cc1 -Wall -pedantic-errors -Werror -x c++ -std=c++1y %t
6 
7 // This is a test of the code modification hints for C++1y-compatibility problems.
8 
9 struct S {
10   constexpr int &f(); // expected-warning {{'constexpr' non-static member function will not be implicitly 'const' in C++1y; add 'const' to avoid a change in behavior}}
11   int &f();
12 };
13