From: Fariborz Jahanian <fjahanian@apple.com>
Date: Sat, 23 Jun 2012 18:39:57 +0000 (+0000)
Subject: objective-c: issue deprecation/unavailability warnings for methods called on
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=33e6c2da2f72720ee6a34c6acd2a3e5ad37feca9;p=clang

objective-c: issue deprecation/unavailability warnings for methods called on
id <Protocol>. // rdar://11618852


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159084 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Sema/SemaExprObjC.cpp b/lib/Sema/SemaExprObjC.cpp
index 5304f567ee..598ad0b27a 100644
--- a/lib/Sema/SemaExprObjC.cpp
+++ b/lib/Sema/SemaExprObjC.cpp
@@ -2238,12 +2238,15 @@ ExprResult Sema::BuildInstanceMessage(Expr *Receiver,
 
       // We allow sending a message to a qualified ID ("id<foo>"), which is ok as
       // long as one of the protocols implements the selector (if not, warn).
+      // And as long as message is not deprecated/unavailable (warn if it is).
       if (const ObjCObjectPointerType *QIdTy 
                                    = ReceiverType->getAsObjCQualifiedIdType()) {
         // Search protocols for instance methods.
         Method = LookupMethodInQualifiedType(Sel, QIdTy, true);
         if (!Method)
           Method = LookupMethodInQualifiedType(Sel, QIdTy, false);
+        if (Method && DiagnoseUseOfDecl(Method, Loc))
+          return ExprError();
       } else if (const ObjCObjectPointerType *OCIType
                    = ReceiverType->getAsObjCInterfacePointerType()) {
         // We allow sending a message to a pointer to an interface (an object).
diff --git a/test/SemaObjC/warn-protocol-method-deprecated.m b/test/SemaObjC/warn-protocol-method-deprecated.m
new file mode 100644
index 0000000000..928694db25
--- /dev/null
+++ b/test/SemaObjC/warn-protocol-method-deprecated.m
@@ -0,0 +1,32 @@
+// RUN: %clang_cc1 -fsyntax-only -Wno-objc-root-class -verify %s
+// rdar://11618852
+
+@protocol TestProtocol 
+- (void)newProtocolMethod;
+- (void)deprecatedProtocolMethod __attribute__((deprecated)); // expected-note 2 {{method 'deprecatedProtocolMethod' declared here}}
+@end
+
+@interface NSObject @end
+
+@interface TestClass : NSObject <TestProtocol>
+
+- (void)newInstanceMethod;
+- (void)deprecatedInstanceMethod __attribute__((deprecated)); // expected-note {{method 'deprecatedInstanceMethod' declared here}}
+
+@end
+
+int main(int argc, const char * argv[])
+{
+
+    TestClass *testObj = (TestClass*)0;
+    [testObj newInstanceMethod];
+    [testObj deprecatedInstanceMethod]; // expected-warning {{'deprecatedInstanceMethod' is deprecated}}
+
+    [testObj newProtocolMethod];
+    [testObj deprecatedProtocolMethod]; // expected-warning {{'deprecatedProtocolMethod' is deprecated}}
+
+    id <TestProtocol> testProto = testObj;
+    [testProto newProtocolMethod];
+    [testProto deprecatedProtocolMethod]; // expected-warning {{'deprecatedProtocolMethod' is deprecated}}
+    return 0;
+}