1 // RUN: %clang_cc1 %s -fsyntax-only -verify -fms-compatibility
2
3 struct S {
4 mutable int &a; // expected-warning {{'mutable' on a reference type is a Microsoft extension}}
SS5 S(int &b) : a(b) {}
6 };
7
main()8 int main() {
9 int a = 0;
10 const S s(a);
11 s.a = 10;
12 return s.a + a;
13 }
14