1 files changed, 3 insertions, 0 deletions
diff --git a/clang/lib/Sema/SemaTemplate.cpp b/clang/lib/Sema/SemaTemplate.cpp
index c38c724ed9b..943e8f422a7 100755
--- a/clang/lib/Sema/SemaTemplate.cpp
+++ b/clang/lib/Sema/SemaTemplate.cpp
@@ -3817,6 +3817,9 @@ TypeResult Sema::ActOnTagTemplateIdType(TagUseKind TUK,
                                         SourceLocation LAngleLoc,
                                         ASTTemplateArgsPtr TemplateArgsIn,
                                         SourceLocation RAngleLoc) {
+  if (SS.isInvalid())
+    return TypeResult(true);
+
   TemplateName Template = TemplateD.get();
 
   // Translate the parser's template argument list in our AST format.