Fix objc rewriting bug casting to qualified objective-c pointetr.

// rdar://9056351


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126536 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Rewrite/RewriteObjC.cpp

@@ -2988,9 +2988,9 @@ Stmt *RewriteObjC::SynthMessageExpr(ObjCMessageExpr *Exp,
     // Make all implicit casts explicit...ICE comes in handy:-)
     if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(userExpr)) {
       // Reuse the ICE type, it is exactly what the doctor ordered.
-      QualType type = ICE->getType()->isObjCQualifiedIdType()
-                                ? Context->getObjCIdType()
-                                : ICE->getType();
+      QualType type = ICE->getType();
+      if (needToScanForQualifiers(type))
+        type = Context->getObjCIdType();
       // Make sure we convert "type (^)(...)" to "type (*)(...)".
       (void)convertBlockPointerToFunctionPointer(type);
       userExpr = NoTypeInfoCStyleCastExpr(Context, type, CK_BitCast,

test/Rewriter/rewrite-vararg.m

@@ -0,0 +1,27 @@
+// RUN: %clang_cc1 -x objective-c++ -Wno-return-type -fblocks -fms-extensions -rewrite-objc %s -o %t-rw.cpp
+// RUN: %clang_cc1 -fsyntax-only -fblocks -Wno-address-of-temporary -D"id=void*" -D"SEL=void*" -D"__declspec(X)=" %t-rw.cpp
+
+// rdar://9056351
+void *sel_registerName(const char *);
+
+@interface NSObject @end
+@class NSString;
+
+@protocol P
+  -(void)ParliamentFunkadelic;
+@end
+	
+@interface Foo {
+  NSObject <P> *_dataSource;
+}
+@end
+	
+@interface Bar { }
++(void)WhateverBar:(NSString*)format, ...;
+@end
+	
+@implementation Foo
+-(void)WhateverFoo {
+	[Bar WhateverBar:@"ISyncSessionDriverDataSource %@ responded poorly", _dataSource];
+}
+@end