1 files changed, 2 insertions, 1 deletions
diff --git a/lib/AST/TypePrinter.cpp b/lib/AST/TypePrinter.cpp
index d7b7103faa..dacbf9a96d 100644
--- a/lib/AST/TypePrinter.cpp
+++ b/lib/AST/TypePrinter.cpp
@@ -1204,7 +1204,8 @@ void TypePrinter::printTag(TagDecl *D, raw_ostream &OS) {
   // arguments.
   if (const auto *Spec = dyn_cast<ClassTemplateSpecializationDecl>(D)) {
     ArrayRef<TemplateArgument> Args;
-    if (TypeSourceInfo *TAW = Spec->getTypeAsWritten()) {
+    TypeSourceInfo *TAW = Spec->getTypeAsWritten();
+    if (!Policy.PrintCanonicalTypes && TAW) {
       const TemplateSpecializationType *TST =
         cast<TemplateSpecializationType>(TAW->getType());
       Args = TST->template_arguments();