From 20912d644a5eddcdf130e1ade03e884c19774978 Mon Sep 17 00:00:00 2001
From: Fariborz Jahanian <fjahanian@apple.com>
Date: Wed, 17 Feb 2010 17:00:07 +0000
Subject: [PATCH] Allow for declaration and use of ivars in a stand-alone
 implementation (toward radar 7547942).

llvm-svn: 96479
---
 clang/lib/Sema/SemaDeclObjC.cpp                  |  6 ++++++
 clang/test/SemaObjC/stand-alone-implementation.m | 12 ++++++++++++
 2 files changed, 18 insertions(+)
 create mode 100644 clang/test/SemaObjC/stand-alone-implementation.m

diff --git a/clang/lib/Sema/SemaDeclObjC.cpp b/clang/lib/Sema/SemaDeclObjC.cpp
index 1e9b56a90ed6..465c4a9ee187 100644
--- a/clang/lib/Sema/SemaDeclObjC.cpp
+++ b/clang/lib/Sema/SemaDeclObjC.cpp
@@ -823,6 +823,12 @@ void Sema::CheckImplementationIvars(ObjCImplementationDecl *ImpDecl,
   if (IDecl->isImplicitInterfaceDecl()) {
     IDecl->setIVarList(ivars, numIvars, Context);
     IDecl->setLocEnd(RBrace);
+    // Add ivar's to class's DeclContext.
+    for (unsigned i = 0, e = numIvars; i != e; ++i) {
+      ivars[i]->setLexicalDeclContext(IDecl);
+      IDecl->addDecl(ivars[i]);
+    }
+    
     return;
   }
   // If implementation has empty ivar list, just return.
diff --git a/clang/test/SemaObjC/stand-alone-implementation.m b/clang/test/SemaObjC/stand-alone-implementation.m
new file mode 100644
index 000000000000..c33b66a37bc3
--- /dev/null
+++ b/clang/test/SemaObjC/stand-alone-implementation.m
@@ -0,0 +1,12 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+// radar 7547942
+// Allow injection of ivars into implementation's implicit class.
+
+@implementation INTFSTANDALONE // expected-warning {{cannot find interface declaration for 'INTFSTANDALONE'}}
+{
+  id IVAR1;
+  id IVAR2;
+}
+- (id) Meth { return IVAR1; }
+@end
+