Implicitly assume that a ObjC category to an unavailable interface is also unavailable;

only give an 'unavailable' error on the @implementation of the category. rdar://10234078

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@141335 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 3 insertions, 0 deletions

diff --git a/lib/Sema/SemaDeclAttr.cpp b/lib/Sema/SemaDeclAttr.cpp
index e5ea1610ad..93efac0651 100644
--- a/lib/Sema/SemaDeclAttr.cpp
+++ b/lib/Sema/SemaDeclAttr.cpp
@@ -4002,6 +4002,9 @@ static bool isDeclDeprecated(Decl *D) {
   do {
     if (D->isDeprecated())
       return true;
+    // A category implicitly has the availability of the interface.
+    if (const ObjCCategoryDecl *CatD = dyn_cast<ObjCCategoryDecl>(D))
+      return CatD->getClassInterface()->isDeprecated();
   } while ((D = cast_or_null<Decl>(D->getDeclContext())));
   return false;
 }