From 6c110f385b78ab617d3e3598c55dca79905435f9 Mon Sep 17 00:00:00 2001
From: Douglas Gregor <dgregor@apple.com>
Date: Thu, 16 Dec 2010 01:14:37 +0000
Subject: Check for unexpanded parameter packs in friend declarations.

llvm-svn: 121934
---
 clang/lib/Sema/SemaDecl.cpp    | 4 ++++
 clang/lib/Sema/SemaDeclCXX.cpp | 9 +++++++++
 2 files changed, 13 insertions(+)

(limited to 'clang/lib/Sema')

diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
index c3384a51628..b46561851cd 100644
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -2332,6 +2332,10 @@ Decl *Sema::HandleDeclarator(Scope *S, Declarator &D,
   if (D.getCXXScopeSpec().isInvalid())
     D.setInvalidType();
   else if (D.getCXXScopeSpec().isSet()) {
+    if (DiagnoseUnexpandedParameterPack(D.getCXXScopeSpec(), 
+                                        UPPC_DeclarationQualifier))
+      return 0;
+
     bool EnteringContext = !D.getDeclSpec().isFriendSpecified();
     DC = computeDeclContext(D.getCXXScopeSpec(), EnteringContext);
     if (!DC) {
diff --git a/clang/lib/Sema/SemaDeclCXX.cpp b/clang/lib/Sema/SemaDeclCXX.cpp
index 4a9abec5838..0cf5f99b644 100644
--- a/clang/lib/Sema/SemaDeclCXX.cpp
+++ b/clang/lib/Sema/SemaDeclCXX.cpp
@@ -6383,6 +6383,9 @@ Decl *Sema::ActOnFriendTypeDecl(Scope *S, const DeclSpec &DS,
   if (TheDeclarator.isInvalidType())
     return 0;
 
+  if (DiagnoseUnexpandedParameterPack(Loc, TSI, UPPC_FriendDeclaration))
+    return 0;
+
   // This is definitely an error in C++98.  It's probably meant to
   // be forbidden in C++0x, too, but the specification is just
   // poorly written.
@@ -6482,6 +6485,12 @@ Decl *Sema::ActOnFriendFunctionDecl(Scope *S, Declarator &D, bool IsDefinition,
   DeclarationName Name = NameInfo.getName();
   assert(Name);
 
+  // Check for unexpanded parameter packs.
+  if (DiagnoseUnexpandedParameterPack(Loc, TInfo, UPPC_FriendDeclaration) ||
+      DiagnoseUnexpandedParameterPack(NameInfo, UPPC_FriendDeclaration) ||
+      DiagnoseUnexpandedParameterPack(SS, UPPC_FriendDeclaration))
+    return 0;
+
   // The context we found the declaration in, or in which we should
   // create the declaration.
   DeclContext *DC;
-- 
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