From 2ded5d25a9d4b718b249f29aa06d34fe2101e91c Mon Sep 17 00:00:00 2001
From: John McCall <rjmccall@apple.com>
Date: Wed, 11 Aug 2010 23:52:36 +0000
Subject: Don't try to implicitly declare special members of an invalid class.
 Fixes a crash in a rather large and difficult-to-reduce test case.

llvm-svn: 110882
---
 clang/lib/Sema/SemaLookup.cpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'clang/lib')

diff --git a/clang/lib/Sema/SemaLookup.cpp b/clang/lib/Sema/SemaLookup.cpp
index a54716c679b..024aa131bed 100644
--- a/clang/lib/Sema/SemaLookup.cpp
+++ b/clang/lib/Sema/SemaLookup.cpp
@@ -469,6 +469,10 @@ static bool LookupBuiltin(Sema &S, LookupResult &R) {
 /// the class at this point.
 static bool CanDeclareSpecialMemberFunction(ASTContext &Context,
                                             const CXXRecordDecl *Class) {
+  // Don't do it if the class is invalid.
+  if (Class->isInvalidDecl())
+    return false;
+  
   // We need to have a definition for the class.
   if (!Class->getDefinition() || Class->isDependentContext())
     return false;
-- 
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