[cfe-dev] C++ operator overload miscompilation

[Dimitry Andric via cfe-dev]

On 8 Jun 2017, at 12:22, Adam Nowacki via cfe-dev <cfe-dev at lists.llvm.org> wrote:
> 
> For C++ code:
> 
> struct A {
>    operator int();
> };
> bool f() {
>    bool operator==(const A &, const A &);
>    return A() == A();
> }

Any particular reason why you declare operator== inside f()?  Normally, such declarations are put at the top level.


> 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.

That said, it's weird that it doesn't find operator== here.  I think it has something to do with declaring it inside the function, instead of at the top level.

-Dimitry


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