1 // RUN: %clang_cc1 -fsyntax-only -fshow-overloads=best -verify -triple x86_64-linux-gnu -std=c++17 %s
2 
3 struct BoolRef {
4   operator bool&();
5 };
6 
foo(BoolRef br)7 void foo(BoolRef br) {
8   // C++ [over.built]p3: Increment for bool was removed in C++17.
9   bool b = br++; // expected-error{{cannot increment value of type 'BoolRef'}}
10 }