[cfe-dev] Pointer Arithmetic

[Keith Bauer]

After further reflection, I've realized that the test

if (isa<PointerType>(ExprTy)) {

in

case BinaryOperator::Sub

should not detect (pointer - pointer), since the type of that
expression should be integral (ptrdiff_t).  However, it *is* detecting
(pointer - pointer), which is causing at least one of the problems I
had with implementing it...

Where is that expression's type coming from?

-Keith