From: Douglas Gregor <dgregor@apple.com>
Date: Mon, 11 Jan 2010 22:30:10 +0000 (+0000)
Subject: C++0x [dcl.typedef]p4, take 3, where we actually figure out what "that
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=05f650001bc66c2dc238e7cee709cb7896bd8a37;p=clang

C++0x [dcl.typedef]p4, take 3, where we actually figure out what "that
is not also a typedef-name" actually means. For anyone keeping score,
that's John: 2, Doug: 0.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@93196 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Sema/SemaDecl.cpp b/lib/Sema/SemaDecl.cpp
index dc91431cdd..d2f254c718 100644
--- a/lib/Sema/SemaDecl.cpp
+++ b/lib/Sema/SemaDecl.cpp
@@ -832,7 +832,7 @@ void Sema::MergeTypeDefDecl(TypedefDecl *New, LookupResult &OldDecls) {
     //   };
     //
     // since that was the intent of DR56.
-    if (isa<ElaboratedType>(New->getUnderlyingType()))
+    if (!isa<TypedefDecl >(Old))
       return;
 
     Diag(New->getLocation(), diag::err_redefinition)
diff --git a/test/CXX/dcl.dcl/dcl.spec/dcl.typedef/p4.cpp b/test/CXX/dcl.dcl/dcl.spec/dcl.typedef/p4.cpp
index 7fbd77cf59..c16ba201df 100644
--- a/test/CXX/dcl.dcl/dcl.spec/dcl.typedef/p4.cpp
+++ b/test/CXX/dcl.dcl/dcl.spec/dcl.typedef/p4.cpp
@@ -2,11 +2,14 @@
 
 struct S {
   typedef struct A {} A; // expected-note {{previous definition is here}}
-  typedef struct B {} B;
+  typedef struct B B;
   typedef A A; // expected-error {{redefinition of 'A'}}
 
-  struct C { }; // expected-note{{previous definition is here}}
+  struct C { };
   typedef struct C OtherC;
-  typedef OtherC C; // expected-error{{redefinition of 'C'}}
+  typedef OtherC C;
+
+  typedef struct D { } D2;
+  typedef D2 D;
 };