Objective-C. Turn off designated initialization warnings on

'init' methods which are unavailable. Subclasses of NSObject
have to implement such methods as a common pattern to prevent
user's own implementation. // rdar://16305460


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@203966 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 2 deletions

diff --git a/lib/Sema/SemaDeclObjC.cpp b/lib/Sema/SemaDeclObjC.cpp
index 3198b01949..ca4d20c099 100644
--- a/lib/Sema/SemaDeclObjC.cpp
+++ b/lib/Sema/SemaDeclObjC.cpp
@@ -392,11 +392,14 @@ void Sema::ActOnStartOfObjCMethodDef(Scope *FnBodyScope, Decl *D) {
     if (MDecl->getMethodFamily() == OMF_init) {
       if (MDecl->isDesignatedInitializerForTheInterface()) {
         getCurFunction()->ObjCIsDesignatedInit = true;
-        getCurFunction()->ObjCWarnForNoDesignatedInitChain =
+        // Don't issue this warning for unavaialable inits.
+        if (!MDecl->isUnavailable())
+          getCurFunction()->ObjCWarnForNoDesignatedInitChain =
             IC->getSuperClass() != 0;
       } else if (IC->hasDesignatedInitializers()) {
         getCurFunction()->ObjCIsSecondaryInit = true;
-        getCurFunction()->ObjCWarnForNoInitDelegation = true;
+        // Don't issue this warning for unavaialable inits.
+        getCurFunction()->ObjCWarnForNoInitDelegation = !MDecl->isUnavailable();
       }
     }