From 0b76654b712b7bd5f2f15f782e8fa887d78346d3 Mon Sep 17 00:00:00 2001
From: John-David Dalton <john.david.dalton@gmail.com>
Date: Fri, 26 Feb 2016 09:33:30 -0800
Subject: [PATCH] Ensure `stack` is popped after recursive merge so that it
 doesn't affect sibling properties. [closes #2060]

---
 lodash.js    | 1 +
 test/test.js | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/lodash.js b/lodash.js
index 67227155c..3496f8a1f 100644
--- a/lodash.js
+++ b/lodash.js
@@ -3209,6 +3209,7 @@
         // Recursively merge objects and arrays (susceptible to call stack limits).
         mergeFunc(newValue, srcValue, srcIndex, customizer, stack);
       }
+      stack['delete'](srcValue);
       assignMergeValue(object, key, newValue);
     }
 
diff --git a/test/test.js b/test/test.js
index 6343a80f5..869ce0e8c 100644
--- a/test/test.js
+++ b/test/test.js
@@ -14023,7 +14023,7 @@
       source.bar.b = source.foo.b;
 
       var actual = _.merge(object, source);
-      assert.ok(actual.bar.b === actual.foo.b && actual.foo.b.c.d === actual.foo.b.c.d.foo.b.c.d);
+      assert.ok(actual.bar.b !== actual.foo.b && actual.foo.b.c.d === actual.foo.b.c.d.foo.b.c.d);
     });
 
     QUnit.test('should work with four arguments', function(assert) {