1 files changed, 27 insertions, 0 deletions
diff --git a/clang/test/SemaObjC/class-stub-attr.m b/clang/test/SemaObjC/class-stub-attr.m
new file mode 100644
index 00000000000..46c07d8b5f7
--- /dev/null
+++ b/clang/test/SemaObjC/class-stub-attr.m
@@ -0,0 +1,27 @@
+// RUN: %clang -target x86_64-apple-darwin -fsyntax-only -Xclang -verify %s
+// RUN: %clang -target x86_64-apple-darwin -x objective-c++ -fsyntax-only -Xclang -verify %s
+
+@interface NSObject
+@end
+
+__attribute__((objc_class_stub))
+@interface MissingSubclassingRestrictedAttribute : NSObject // expected-error {{'objc_class_stub' attribute cannot be specified on a class that does not have the 'objc_subclassing_restricted' attribute}}
+@end
+
+__attribute__((objc_class_stub))
+__attribute__((objc_subclassing_restricted))
+@interface ValidClassStubAttribute : NSObject
+@end
+
+@implementation ValidClassStubAttribute // expected-error {{cannot declare implementation of a class declared with the 'objc_class_stub' attribute}}
+@end
+
+@implementation ValidClassStubAttribute (MyCategory)
+@end
+
+__attribute__((objc_class_stub(123))) // expected-error {{'objc_class_stub' attribute takes no arguments}}
+@interface InvalidClassStubAttribute : NSObject
+@end
+
+__attribute__((objc_class_stub)) // expected-error {{'objc_class_stub' attribute only applies to Objective-C interfaces}}
+int cannotHaveObjCClassStubAttribute() {}