[cfe-dev] C++ operator overload miscompilation

[Adam Nowacki via cfe-dev]

For C++ code:

struct A {
    operator int();
};
bool f() {
    bool operator==(const A &, const A &);
    return A() == A();
}

clang emits calls to A::operator int() and then performs the == comparison on ints - which is incorrect, only a call to operator==(const A &, const A &) should be emitted.
Other compilers handle this correctly (gcc, icc, cl).

https://godbolt.org/g/IpXmfw