Delay lookup of simple default template arguments under -fms-compatibility

MSVC delays parsing of default arguments until instantiation.  If the
default argument is never used, it is never parsed.  We don't model
this.

Instead, if lookup of a type name fails in a template argument context,
we form a DependentNameType, which will be looked up at instantiation
time.

This fixes errors about 'CControlWinTraits' in atlwin.h.

Reviewers: rsmith

Differential Revision: http://reviews.llvm.org/D3995

llvm-svn: 210382

1 files changed, 0 insertions, 2 deletions

diff --git a/clang/lib/AST/ASTContext.cpp b/clang/lib/AST/ASTContext.cpp
index 3f48e798687..4dff88bbebe 100644
--- a/clang/lib/AST/ASTContext.cpp
+++ b/clang/lib/AST/ASTContext.cpp
@@ -3318,8 +3318,6 @@ QualType ASTContext::getDependentNameType(ElaboratedTypeKeyword Keyword,
                                           NestedNameSpecifier *NNS,
                                           const IdentifierInfo *Name,
                                           QualType Canon) const {
-  assert(NNS->isDependent() && "nested-name-specifier must be dependent");
-
   if (Canon.isNull()) {
     NestedNameSpecifier *CanonNNS = getCanonicalNestedNameSpecifier(NNS);
     ElaboratedTypeKeyword CanonKeyword = Keyword;