[ObjC] Follow-up r350768 and allow the use of unavailable methods that are

declared in a parent class from within the @implementation context

This commit extends r350768 and allows the use of methods marked as unavailable
that are declared in a parent class/category from within the @implementation of
the class where the method is marked as unavailable.
This allows users to call init that's marked as unavailable even if they don't
define it.

rdar://47134898

Differential Revision: https://reviews.llvm.org/D56816

llvm-svn: 351459

2 files changed, 22 insertions, 4 deletions

diff --git a/clang/test/SemaObjC/call-unavailable-init-in-self.m b/clang/test/SemaObjC/call-unavailable-init-in-self.m
index fa6f670cc99..48fc2326af4 100644
--- a/clang/test/SemaObjC/call-unavailable-init-in-self.m
+++ b/clang/test/SemaObjC/call-unavailable-init-in-self.m
@@ -5,13 +5,24 @@
 + (instancetype)new;
 + (instancetype)alloc;
 
+- (void)declaredInSuper;
+
+@end
+
+@interface NSObject (Category)
+
+- (void)declaredInSuperCategory;
+
 @end
 
 @interface Sub: NSObject
 
 - (instancetype)init __attribute__((unavailable)); // expected-note 4 {{'init' has been explicitly marked unavailable here}}
 
-- (void)notImplemented __attribute__((unavailable)); // expected-note {{'notImplemented' has been explicitly marked unavailable here}}
+- (void)notImplemented __attribute__((unavailable));
+
+- (void)declaredInSuper __attribute__((unavailable));
+- (void)declaredInSuperCategory __attribute__((unavailable));
 
 @end
 
@@ -34,7 +45,14 @@
 }
 
 - (void)reportUseOfUnimplemented {
-  [self notImplemented]; // expected-error {{'notImplemented' is unavailable}}
+  [self notImplemented];
+}
+
+- (void)allowSuperCallUsingSelf {
+  [self declaredInSuper];
+  [[Sub alloc] declaredInSuper];
+  [self declaredInSuperCategory];
+  [[Sub alloc] declaredInSuperCategory];
 }
 
 @end
diff --git a/clang/test/SemaObjC/infer-availability-from-init.m b/clang/test/SemaObjC/infer-availability-from-init.m
index f9996ec7087..7aa1e53c091 100644
--- a/clang/test/SemaObjC/infer-availability-from-init.m
+++ b/clang/test/SemaObjC/infer-availability-from-init.m
@@ -47,12 +47,12 @@ void usenotmyobject() {
 }
 
 @interface FromSelf : NSObject
--(instancetype)init __attribute__((unavailable)); // expected-note {{'init' has been explicitly marked unavailable here}}
+-(instancetype)init __attribute__((unavailable));
 +(FromSelf*)another_one;
 @end
 
 @implementation FromSelf
 +(FromSelf*)another_one {
-  [self new]; // expected-error{{'new' is unavailable}}
+  [self new];
 }
 @end