Teach CursorVisitor about duplicate ObjCPropertyDecls that can arise because of a current
design limitation in how we handle Objective-C class extensions. This was causing the CursorVisitor
to essentially visit an @property twice (once in the @interface, the other in the class extension).
Fixes <rdar://problem/7410145>.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104055 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Index/properties-class-extensions.m b/test/Index/properties-class-extensions.m
new file mode 100644
index 0000000..8bca37e
--- /dev/null
+++ b/test/Index/properties-class-extensions.m
@@ -0,0 +1,28 @@
+// Test that @properties within class extensions are visited by
+// clang_visitChildren only in the class extension, not the original
+// @interface (where we have a duplicate declaration - to be removed).
+@interface Foo {} @end
+@interface Foo (Cat)
+ @property int a;
+@end
+@interface Foo ()
+ @property int b;
+ - (void) bar;
+@end
+
+// RUN: c-index-test -test-load-source local %s | FileCheck %s
+// CHECK: properties-class-extensions.m:4:12: ObjCInterfaceDecl=Foo:4:12 Extent=[4:1 - 4:23]
+// CHECK: properties-class-extensions.m:5:12: ObjCCategoryDecl=Cat:5:12 Extent=[5:1 - 7:5]
+// CHECK: properties-class-extensions.m:5:12: ObjCClassRef=Foo:4:12 Extent=[5:12 - 5:15]
+// CHECK: properties-class-extensions.m:6:17: ObjCPropertyDecl=a:6:17 Extent=[6:17 - 6:18]
+// CHECK: properties-class-extensions.m:6:17: ObjCInstanceMethodDecl=a:6:17 Extent=[6:17 - 6:18]
+// CHECK: properties-class-extensions.m:6:17: ObjCInstanceMethodDecl=setA::6:17 Extent=[6:17 - 6:18]
+// CHECK: properties-class-extensions.m:6:17: ParmDecl=a:6:17 (Definition) Extent=[6:17 - 6:18]
+// CHECK: properties-class-extensions.m:8:12: ObjCCategoryDecl=:8:12 Extent=[8:1 - 11:5]
+// CHECK: properties-class-extensions.m:8:12: ObjCClassRef=Foo:4:12 Extent=[8:12 - 8:15]
+// CHECK: properties-class-extensions.m:9:17: ObjCPropertyDecl=b:9:17 Extent=[9:17 - 9:18]
+// CHECK: properties-class-extensions.m:9:17: ObjCInstanceMethodDecl=b:9:17 Extent=[9:17 - 9:18]
+// CHECK: properties-class-extensions.m:9:17: ObjCInstanceMethodDecl=setB::9:17 Extent=[9:17 - 9:18]
+// CHECK: properties-class-extensions.m:9:17: ParmDecl=b:9:17 (Definition) Extent=[9:17 - 9:18]
+// CHECK: properties-class-extensions.m:10:3: ObjCInstanceMethodDecl=bar:10:3 Extent=[10:3 - 10:16]
+