Add the clang library to the repo (with some of my changes, too).

1 files changed, 64 insertions, 0 deletions

diff --git a/clang/test/SemaObjC/arc-unavailable-for-weakref.m b/clang/test/SemaObjC/arc-unavailable-for-weakref.m
new file mode 100644
index 0000000..8498de6
--- /dev/null
+++ b/clang/test/SemaObjC/arc-unavailable-for-weakref.m
@@ -0,0 +1,64 @@
+// RUN: %clang_cc1 -triple x86_64-apple-darwin11 -fobjc-runtime-has-weak -fsyntax-only -fobjc-arc -verify -Wno-objc-root-class %s
+// rdar://9693477
+
+__attribute__((objc_arc_weak_reference_unavailable))
+@interface NSOptOut1072  // expected-note {{class is declared here}}
+@end
+
+@interface sub : NSOptOut1072 @end // expected-note 2 {{class is declared here}}
+
+int main() {
+  __weak sub *w2; // expected-error {{class is incompatible with __weak references}}
+
+  __weak NSOptOut1072 *ns1; // expected-error {{class is incompatible with __weak references}}
+
+  id obj;
+
+  ns1 = (__weak sub *)obj; // expected-error {{assignment of a weak-unavailable object to a __weak object}} \
+                           // expected-error {{class is incompatible with __weak references}} \
+                           // expected-error {{explicit ownership qualifier on cast result has no effect}}
+}
+
+// rdar://9732636
+__attribute__((objc_arc_weak_reference_unavailable))
+@interface NOWEAK
++ (id) new;
+@end
+
+NOWEAK * Test1() {
+  NOWEAK * strong1 = [NOWEAK new];
+  __weak id weak1;
+  weak1 = strong1; // expected-error {{assignment of a weak-unavailable object to a __weak object}}
+
+  __weak id weak2 = strong1; // expected-error {{assignment of a weak-unavailable object to a __weak object}}
+  return (__weak id)strong1; // expected-error {{cast of weak-unavailable object of type 'NOWEAK *' to a __weak object of type '__weak id'}} \
+                             // expected-error {{explicit ownership qualifier on cast result has no effect}}
+}
+
+@protocol P @end
+@protocol P1 @end
+
+NOWEAK<P, P1> * Test2() {
+  NOWEAK<P, P1> * strong1 = 0;
+  __weak id<P> weak1;
+  weak1 = strong1; // expected-error {{assignment of a weak-unavailable object to a __weak object}}
+
+  __weak id<P> weak2 = strong1; // expected-error {{assignment of a weak-unavailable object to a __weak object}}
+  return (__weak id<P>)strong1; // expected-error {{cast of weak-unavailable object of type 'NOWEAK<P,P1> *' to a __weak object of type '__weak id<P>'}} \
+                                // expected-error {{explicit ownership qualifier on cast result has no effect}}
+}
+
+// rdar://10535245
+__attribute__((objc_arc_weak_reference_unavailable))
+@interface NSFont
+@end
+
+@interface I
+{
+}
+@property (weak) NSFont *font; // expected-note {{property declared here}}
+@end
+
+@implementation I
+@synthesize font = _font; // expected-error {{synthesis of a weak-unavailable property is disallowed because it requires synthesis of an ivar of the __weak object}}
+@end