Those hashes are exactly designed in the way that any such changes will alter hashes and thus stop linkage. Virtually all C++ name mangling schemes don't even c

Those hashes are exactly designed in the way that any such changes will alter hashes and thus stop linkage. Virtually all C++ name mangling schemes don't even consider such cases: `void foo(T&);` will probably result in the same mangled name even though T's layout or any type referenced by T has been changed. In Rust they do affect mangling.