Check for unexpanded parameter packs in non-type template parameter types.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@121964 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 9 insertions, 3 deletions

diff --git a/lib/Sema/SemaTemplate.cpp b/lib/Sema/SemaTemplate.cpp
index a79c17cdbf..f94f34626d 100644
--- a/lib/Sema/SemaTemplate.cpp
+++ b/lib/Sema/SemaTemplate.cpp
@@ -626,12 +626,18 @@ Decl *Sema::ActOnNonTypeTemplateParameter(Scope *S, Declarator &D,
                                                            PrevDecl);
   }
 
-  T = CheckNonTypeTemplateParameterType(T, D.getIdentifierLoc());
-  if (T.isNull()) {
+  if (DiagnoseUnexpandedParameterPack(D.getIdentifierLoc(), TInfo, 
+                                      UPPC_NonTypeTemplateParameterType)) {
     T = Context.IntTy; // Recover with an 'int' type.
     Invalid = true;
+  } else {  
+    T = CheckNonTypeTemplateParameterType(T, D.getIdentifierLoc());
+    if (T.isNull()) {
+      T = Context.IntTy; // Recover with an 'int' type.
+      Invalid = true;
+    }
   }
-
+  
   NonTypeTemplateParmDecl *Param
     = NonTypeTemplateParmDecl::Create(Context, Context.getTranslationUnitDecl(),
                                       D.getIdentifierLoc(),