commit cd707abbc758149d9f7d37bd0b25298455c678b2
author Argyrios Kyrtzidis <akyrtzi@gmail.com> Tue Mar 13 01:09:36 2012 +0000
committer Argyrios Kyrtzidis <akyrtzi@gmail.com> Tue Mar 13 01:09:36 2012 +0000
tree 3eff0bb6d40f23d603990709797bf4e031de642c
parent 78dae24600a877f52dbb6e58bfd5778754a00974

Fix crash at @implementation with a forward reference as base class.

rdar://11020003

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152596 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Sema/SemaDeclObjC.cpp

diff --git a/lib/Sema/SemaDeclObjC.cpp b/lib/Sema/SemaDeclObjC.cpp
index 27bdcd6..d224f10 100644
--- a/lib/Sema/SemaDeclObjC.cpp
+++ b/lib/Sema/SemaDeclObjC.cpp
@@ -925,6 +925,8 @@
       Diag(PrevDecl->getLocation(), diag::note_previous_definition);
     } else {
       SDecl = dyn_cast_or_null<ObjCInterfaceDecl>(PrevDecl);
+      if (SDecl && !SDecl->hasDefinition())
+        SDecl = 0;
       if (!SDecl)
         Diag(SuperClassLoc, diag::err_undef_superclass)
           << SuperClassname << ClassName;