Undefined reference to this pointer adjustor thunk

[marczellm]

I had some C++ code in my project using multiple inheritance. The project had optimization set to -O2, I think this was imported from the Xcode settings. The linker gave me an error saying something like (I'm writing this from memory) "undefined reference to [thunk:] __thiscall MyClass::adjustor{4}".

This was solved by disabling optimization but I think this is a bug in the build system / compiler.