Tweak -Wdeprecated-objc-pointer-introspection to have a subgroup for results of using -performSelectorXXX.

-performSelector: and friends return a value that is boxed as an Objective-C
pointer.  Sometimes it is an Objective-C pointer, sometimes it isn't.
Some clients may wish to silence this warning based on calling
this method.

Fixes <rdar://problem/14147304>

llvm-svn: 184789

1 files changed, 7 insertions, 0 deletions

diff --git a/clang/test/SemaObjC/deprecated-objc-introspection.m b/clang/test/SemaObjC/deprecated-objc-introspection.m
index faaef254d59..4f748414586 100644
--- a/clang/test/SemaObjC/deprecated-objc-introspection.m
+++ b/clang/test/SemaObjC/deprecated-objc-introspection.m
@@ -14,9 +14,11 @@ typedef struct objc_object {
   id firstobj;
   struct objc_class *isa;
 }
+- (id)performSelector:(SEL)aSelector;;
 @end
 @interface Whatever : NSObject
 +self;
+-(id)foo;
 @end
 
 static void func() {
@@ -94,4 +96,9 @@ void testBitmasking(NSObject *p) {
   (void) (0x1 & ((NSUInteger) p)); // expected-warning {{bitmasking for introspection of Objective-C object pointers is strongly discouraged}}
   (void) (((NSUInteger) p) ^ 0x1); // no-warning
   (void) (0x1 ^ ((NSUInteger) p)); // no-warning
+  (void) (0x1 & ((NSUInteger) [p performSelector:@selector(foo)])); // expected-warning {{bitmasking for introspection of Objective-C object pointers is strongly discouraged}}
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-objc-pointer-introspection-performSelector"
+  (void) (0x1 & ((NSUInteger) [p performSelector:@selector(foo)])); // no-warning
+#pragma clang diagnostic pop
 }
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