Implement support for parsing pseudo-destructor expression with a nested-name-specifier, e.g.,

  typedef int Int;
  int *p;
  p->Int::~Int();

This weakens the invariant that the only types in nested-name-specifiers are tag types (restricted to class types in C++98/03). However, we weaken this invariant as little as possible, accepting arbitrary types in nested-name-specifiers only when we're in a member access expression that looks like a pseudo-destructor expression.

llvm-svn: 96743
diff --git a/clang/lib/Sema/SemaTemplateInstantiate.cpp b/clang/lib/Sema/SemaTemplateInstantiate.cpp
index f12c559..b6ddc46 100644
--- a/clang/lib/Sema/SemaTemplateInstantiate.cpp
+++ b/clang/lib/Sema/SemaTemplateInstantiate.cpp
@@ -1486,7 +1486,7 @@
                          const MultiLevelTemplateArgumentList &TemplateArgs) {
   TemplateInstantiator Instantiator(*this, TemplateArgs, Range.getBegin(),
                                     DeclarationName());
-  return Instantiator.TransformNestedNameSpecifier(NNS, Range);
+  return Instantiator.TransformNestedNameSpecifier(NNS, Range, false);
 }
 
 TemplateName