1 files changed, 32 insertions, 0 deletions
diff --git a/clang/test/SemaObjC/duplicate-ivar-in-class-extension.m b/clang/test/SemaObjC/duplicate-ivar-in-class-extension.m
new file mode 100644
index 0000000..9b9d58c
--- /dev/null
+++ b/clang/test/SemaObjC/duplicate-ivar-in-class-extension.m
@@ -0,0 +1,32 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+
+@interface Root @end
+
+@interface SuperClass  : Root 
+{
+  int iSuper;	// expected-note {{previous declaration is here}}
+}
+@end
+
+@interface SubClass : SuperClass {
+    int ivar;	// expected-error {{duplicate member 'ivar'}}
+    int another_ivar;	// expected-error {{duplicate member 'another_ivar'}}
+    int iSuper;	// expected-error {{duplicate member 'iSuper'}}
+}
+@end
+
+@interface SuperClass () {
+   int ivar;	// expected-note {{previous declaration is here}}
+}
+@end
+
+@interface Root () {
+  int another_ivar;	// expected-note {{previous declaration is here}}
+}
+@end
+
+@implementation SubClass
+-(int) method {
+        return self->ivar;  // would be ambiguous if the duplicate ivar were allowed
+}
+@end