1 files changed, 45 insertions, 0 deletions
diff --git a/test/PCH/objc_parameterized_classes.m b/test/PCH/objc_parameterized_classes.m
new file mode 100644
index 000000000000..0c1885871045
--- /dev/null
+++ b/test/PCH/objc_parameterized_classes.m
@@ -0,0 +1,45 @@
+// RUN: %clang_cc1 -emit-pch %s -o %t
+// RUN: %clang_cc1 -include-pch %t -verify %s
+
+#ifndef HEADER_INCLUDED
+
+#define HEADER_INCLUDED
+
+@protocol NSObject
+@end
+
+__attribute__((objc_root_class))
+@interface NSObject
+@end
+
+@interface PC1<__covariant T, U : NSObject *> : NSObject
+// expected-note@-2{{type parameter 'U' declared here}}
+@end
+
+@interface PC1<__covariant T, U : NSObject *> (Cat1)
+@end
+
+typedef PC1<id, NSObject *> PC1Specialization1;
+
+typedef PC1Specialization1 <NSObject> PC1Specialization2;
+#else
+
+@interface PC1<T : NSObject *, // expected-error{{type bound 'NSObject *' for type parameter 'T' conflicts with implicit bound 'id}}
+ // expected-note@15{{type parameter 'T' declared here}}
+               U : id> (Cat2) // expected-error{{type bound 'id' for type parameter 'U' conflicts with previous bound 'NSObject *'}}
+ // expected-note@15{{type parameter 'U' declared here}}
+@end
+
+typedef PC1Specialization1<id, NSObject *> PC1Specialization3; // expected-error{{type arguments cannot be applied to already-specialized class type 'PC1Specialization1' (aka 'PC1<id,NSObject *>')}}
+
+typedef PC1Specialization2<id, NSObject *> PC1Specialization4; // expected-error{{already-specialized class type 'PC1Specialization2' (aka 'PC1Specialization1<NSObject>')}}
+
+@interface NSString : NSObject
+@end
+
+void testCovariance(PC1<NSObject *, NSObject *> *pc1a,
+                    PC1<NSString *, NSObject *> *pc1b) {
+  pc1a = pc1b;
+}
+
+#endif