From ebc790d4d80bd6aeed7a29b510071416b6509b74 Mon Sep 17 00:00:00 2001
From: Steve Naroff <snaroff@apple.com>
Date: Tue, 7 Apr 2009 15:07:57 +0000
Subject: Tweak Sema::ActOnInstanceMessage() to look for a class method when
 dealing with qualified id's. This change is motivated by our desire to not
 support the "Class<foo>" idiom. Note that the change makes perfect sense
 (since all ObjC classes are also id/instances).

This allow us to document a simple migration path...change "Class <foo>" to "id <foo>".

This effects:
- <rdar://problem/6761939> TASK: File source change radars for "qualified Class" errors
- <rdar://problem/6761864> Protocol qualified Class is unsupported

llvm-svn: 68517
---
 .../protocol-qualified-class-unsupported.m         | 40 ++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 clang/test/SemaObjC/protocol-qualified-class-unsupported.m

(limited to 'clang/test/SemaObjC/protocol-qualified-class-unsupported.m')

diff --git a/clang/test/SemaObjC/protocol-qualified-class-unsupported.m b/clang/test/SemaObjC/protocol-qualified-class-unsupported.m
new file mode 100644
index 00000000000..ad1ed5dc941
--- /dev/null
+++ b/clang/test/SemaObjC/protocol-qualified-class-unsupported.m
@@ -0,0 +1,40 @@
+// RUN: clang-cc -fsyntax-only -verify %s
+
+#include <stddef.h>
+
+typedef struct objc_class *Class;
+typedef struct objc_object {
+    Class isa;
+} *id;
+id objc_getClass(const char *s);
+
+@interface Object
++ self;
+@end
+
+@protocol Func
++ (void) class_func0;
+- (void) instance_func0;
+@end
+
+@interface Derived: Object <Func>
+@end
+
+@interface Derived2: Object <Func>
+@end
+
+static void doSomething(Class <Func> unsupportedObjectType) { // expected-error {{protocol qualified 'Class' is unsupported}}
+  [unsupportedObjectType class_func0];
+}
+
+static void doSomethingElse(id <Func> pleaseConvertToThisType) {
+  [pleaseConvertToThisType class_func0];
+}
+
+int main(int argv, char *argc[]) {
+  doSomething([Derived self]);
+  doSomething([Derived2 self]);
+  doSomethingElse([Derived self]);
+  doSomethingElse([Derived2 self]);
+}
+
-- 
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