---

yaml
---
r: 345530
b: refs/heads/master
c: dd7190c
h: refs/heads/master

Author: swift-ci

[refs]

@@ -1,5 +1,5 @@
 ---
-refs/heads/master: 08fcca31e82895c983ee4898472c811f12b42a4a
+refs/heads/master: dd7190c0404c50839133e565f8fb128388e29366
 refs/heads/master-next: 203b3026584ecad859eb328b2e12490099409cd5
 refs/tags/osx-passed: b6b74147ef8a386f532cf9357a1bde006e552c54
 refs/tags/swift-2.2-SNAPSHOT-2015-12-01-a: 6bb18e013c2284f2b45f5f84f2df2887dc0f7dea

trunk/stdlib/public/runtime/ReflectionMirror.mm

@@ -172,6 +172,7 @@ static bool loadSpecialReferenceStorage(OpaqueValue *fieldData,
                               reinterpret_cast<OpaqueValue *>(temporaryValue));
 
   type->deallocateBufferIn(&temporaryBuffer);
+  swift_unknownObjectRelease(strongValue);
 
   return true;
 }

trunk/test/stdlib/WeakMirror.swift

@@ -99,6 +99,24 @@ mirrors.test("struct/StructHasNativeWeakReference") {
   print(extractedChild)
 }
 
+// SR-8878: Using Mirror to access a weak reference results in object
+// being retained indefinitely
+mirrors.test("class/NativeSwiftClassHasNativeWeakReferenceNoLeak") {
+  weak var verifier: AnyObject?
+  do {
+    let parent = NativeSwiftClassHasWeak(x: 1010)
+    let child = NativeSwiftClass(x: 2020)
+    verifier = child
+    parent.weakProperty = child
+    let mirror = Mirror(reflecting: parent)
+    let children = Array(mirror.children)
+    let extractedChild = children[0].1 as! NativeSwiftClass
+    expectNotNil(extractedChild)
+    expectNotNil(verifier)
+  }
+  expectNil(verifier)
+}
+
 #if _runtime(_ObjC)
 
 import Foundation