[objc] Emit warning when the implementation of a secondary initializer calls on

super another initializer and when the implementation does not delegate to
another initializer via a call on 'self'.

A secondary initializer is an initializer method not marked as a designated
initializer within a class that has at least one initializer marked as a
designated initializer.

llvm-svn: 196318

1 files changed, 4 insertions, 0 deletions

diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
index f243c0e8d18..dc8e66dae4c 100644
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -9826,6 +9826,10 @@ Decl *Sema::ActOnFinishFunctionBody(Decl *dcl, Stmt *Body,
            diag::note_objc_designated_init_marked_here);
       getCurFunction()->ObjCWarnForNoDesignatedInitChain = false;
     }
+    if (getCurFunction()->ObjCWarnForNoInitDelegation) {
+      Diag(MD->getLocation(), diag::warn_objc_secondary_init_missing_init_call);
+      getCurFunction()->ObjCWarnForNoInitDelegation = false;
+    }
   } else {
     return 0;
   }