From: Fariborz Jahanian <fjahanian@apple.com>
Date: Sat, 4 Aug 2012 01:24:33 +0000 (+0000)
Subject: objective-C string literal has no side-effect,
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=b34eb0c6f0ea24047ad2439825b4f6348e380315;p=clang

objective-C string literal has no side-effect,
resulting in issuance of unused static variable
warning now. // rdar://10777111


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161291 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/AST/ExprConstant.cpp b/lib/AST/ExprConstant.cpp
index cbcd5e8f74..48131f940a 100644
--- a/lib/AST/ExprConstant.cpp
+++ b/lib/AST/ExprConstant.cpp
@@ -2315,6 +2315,7 @@ public:
   bool VisitIntegerLiteral(const IntegerLiteral *E) { return false; }
   bool VisitFloatingLiteral(const FloatingLiteral *E) { return false; }
   bool VisitStringLiteral(const StringLiteral *E) { return false; }
+  bool VisitObjCStringLiteral(const ObjCStringLiteral *E) { return false; }
   bool VisitCharacterLiteral(const CharacterLiteral *E) { return false; }
   bool VisitUnaryExprOrTypeTraitExpr(const UnaryExprOrTypeTraitExpr *E)
     { return false; }
diff --git a/test/SemaObjC/unused.m b/test/SemaObjC/unused.m
index 975b9a96a7..5c7542bf47 100644
--- a/test/SemaObjC/unused.m
+++ b/test/SemaObjC/unused.m
@@ -51,3 +51,5 @@ void test2() {
 }
 @end
 
+// rdar://10777111
+static NSString *x = @"hi"; // expected-warning {{unused variable 'x'}}