diff --git a/lib/Sema/SemaDeclCXX.cpp b/lib/Sema/SemaDeclCXX.cpp
index 03cec4c..a4ddba3 100644
--- a/lib/Sema/SemaDeclCXX.cpp
+++ b/lib/Sema/SemaDeclCXX.cpp
@@ -2965,7 +2965,11 @@
              NumInitializers * sizeof(CXXCtorInitializer*));
       Constructor->setCtorInitializers(baseOrMemberInitializers);
     }
-    
+
+    // Let template instantiation know whether we had errors.
+    if (AnyErrors)
+      Constructor->setInvalidDecl();
+
     return false;
   }
 
diff --git a/lib/Sema/SemaTemplateInstantiateDecl.cpp b/lib/Sema/SemaTemplateInstantiateDecl.cpp
index 8c1722f..d1c30bd 100644
--- a/lib/Sema/SemaTemplateInstantiateDecl.cpp
+++ b/lib/Sema/SemaTemplateInstantiateDecl.cpp
@@ -2986,7 +2986,7 @@
                            const MultiLevelTemplateArgumentList &TemplateArgs) {
 
   SmallVector<CXXCtorInitializer*, 4> NewInits;
-  bool AnyErrors = false;
+  bool AnyErrors = Tmpl->isInvalidDecl();
 
   // Instantiate all the initializers.
   for (CXXConstructorDecl::init_const_iterator Inits = Tmpl->init_begin(),