David Majnemer ea5092a3b0 Sema: Do not merge new decls with invalid, old decls ... Sema::MergeFunctionDecl attempts merging two decls even if the old decl is invalid. This can lead to interesting circumstances where we successfully merge the decls but the result makes no sense. Take the following for example: template <typename T> int main(void); int main(void); Sema will not consider these to be overloads of the same name because main can't be overloaded, which means that this must be a redeclaration. In this case the templated decl is compatible with the non-templated decl allowing the Sema::CheckFunctionDeclaration machinery to move on and do bizarre things like setting the previous decl of a non-templated decl to a templated decl! The way I see it, we should just bail from MergeFunctionDecl if the old decl is invalid. This fixes PR16531. llvm-svn: 185779		2013-07-07 23:49:50 +00:00
..
p2.cpp	Sema: Do not merge new decls with invalid, old decls	2013-07-07 23:49:50 +00:00