From: Argyrios Kyrtzidis <akyrtzi@gmail.com>
Date: Wed, 9 Nov 2011 00:22:48 +0000 (+0000)
Subject: Don't crash on invalid objc code.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=ccc9e767f21cb9be55c98f9c7cb319134410184b;p=clang

Don't crash on invalid objc code.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144150 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Sema/SemaExprObjC.cpp b/lib/Sema/SemaExprObjC.cpp
index 54a3af52ec..28a5a43055 100644
--- a/lib/Sema/SemaExprObjC.cpp
+++ b/lib/Sema/SemaExprObjC.cpp
@@ -873,6 +873,11 @@ Sema::ObjCMessageKind Sema::getObjCMessageKind(Scope *S,
     // FIXME: This is a hack. Ivar lookup should be part of normal
     // lookup.
     if (ObjCMethodDecl *Method = getCurMethodDecl()) {
+      if (!Method->getClassInterface()) {
+        // Fall back: let the parser try to parse it as an instance message.
+        return ObjCInstanceMessage;
+      }
+
       ObjCInterfaceDecl *ClassDeclared;
       if (Method->getClassInterface()->lookupInstanceVariable(Name, 
                                                               ClassDeclared))
diff --git a/test/SemaObjC/invalid-code.m b/test/SemaObjC/invalid-code.m
index 6a1e28ae9b..b50baa41a1 100644
--- a/test/SemaObjC/invalid-code.m
+++ b/test/SemaObjC/invalid-code.m
@@ -23,6 +23,7 @@ void foo() {
 @class NSView;
 @implementation IBFillView(IBFillViewIntegration) // expected-error {{cannot find interface declaration for 'IBFillView'}}
 - (NSView *)ibDesignableContentView {
+    [Cake lie]; // expected-error {{undeclared}}
     return self;
 }
 @end