[cfe-commits] [PATCH] [VCPP] Add __ptr64 qualifier

[Charles Davis]

  He means you should add a Clang test case (like you did in {D99}) showing that names get mangled properly in 64-bit mode. (Speaking of which, I have something to say about that over there...)

  @AaronBallman The mangling for `__ptr32` is... nothing. This mangling scheme predates support for 64-bit pointers (and `__ptr64`). In fact, `__ptr64` was something that was tacked on later--hence why 64-bit pointer types have a special flag '`E`' set in their mangled names. This was carried over into the Win64 environment. Why? I don't know; probably because it makes the 64-bit mangler simpler (i.e. it's essentially identical to the 32-bit one).

http://llvm-reviews.chandlerc.com/D101