1 files changed, 56 insertions, 0 deletions
diff --git a/clang/test/SemaObjCXX/protocol-lookup.mm b/clang/test/SemaObjCXX/protocol-lookup.mm
new file mode 100644
index 0000000..bd8444c
--- /dev/null
+++ b/clang/test/SemaObjCXX/protocol-lookup.mm
@@ -0,0 +1,56 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+@protocol NSObject
+- retain;
+- release;
+@end
+
+@interface NSObject
+- init;
+- dealloc;
+@end
+
+@protocol Foo <NSObject>
+@end
+
+@protocol Bar <Foo>
+@end
+
+@interface Baz : NSObject {
+	id <Foo> _foo;
+	id <Bar> _bar;
+}
+- (id)initWithFoo:(id <Foo>)foo bar:(id <Bar>)bar;
+@end
+
+@implementation Baz
+
+- (id)init
+{
+	return [self initWithFoo:0 bar:0];
+}
+
+- (id)initWithFoo:(id <Foo>)foo bar:(id <Bar>)bar
+{
+	self = [super init];
+	if (self != 0) {
+		_foo = [foo retain];
+		_bar = [bar retain];
+	}
+	return self;
+}
+
+- dealloc
+{
+	[_foo release];
+	[_bar release];
+	[super dealloc];
+	return 0;
+}
+
+@end
+
+void rdar8575095(id a) {
+  [id<NSObject>(a) retain];
+  id<NSObject> x(id<NSObject>(0));
+  id<NSObject> x2(id<NSObject>(y)); // expected-warning{{parentheses were disambiguated as a function declarator}}
+}