which they do. This avoids all of the default argument promotions that we (1) don't want, and (2) undo during that custom type checking, and makes sure that we don't run into trouble during template instantiation. Fixes PR11320. llvm-svn: 144110
construct a new DeclRefExpr rather than re-using the existing DeclRefExpr. Patch by Likai Liu, fixes PR8345. llvm-svn: 139373