From 01cc20c17973fd4348ce866ab46038a6567356c3 Mon Sep 17 00:00:00 2001
From: Szabo Bogdan <szabobogdan@yahoo.com>
Date: Thu, 10 Jan 2019 10:33:33 +0100
Subject: [PATCH] Fix Json array clone

---
 data/vibe/data/json.d | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/data/vibe/data/json.d b/data/vibe/data/json.d
index d20c4a36eb..bba60afa79 100644
--- a/data/vibe/data/json.d
+++ b/data/vibe/data/json.d
@@ -328,9 +328,10 @@ struct Json {
 			case Type.float_: return Json(m_float);
 			case Type.string: return Json(m_string);
 			case Type.array:
-				auto ret = Json.emptyArray;
+				Json[] ret;
 				foreach (v; this.byValue) ret ~= v.clone();
-				return ret;
+
+				return Json(ret);
 			case Type.object:
 				auto ret = Json.emptyObject;
 				foreach (name, v; this.byKeyValue) ret[name] = v.clone();
@@ -2111,6 +2112,16 @@ struct JsonStringSerializer(R, bool pretty = false)
 	}
 }
 
+/// Cloning JSON arrays
+unittest
+{
+	Json value = Json([ Json([ Json.emptyArray ]), Json.emptyArray ]).clone;
+
+	assert(value.length == 2);
+	assert(value[0].length == 1);
+	assert(value[0][0].length == 0);
+}
+
 unittest
 {
 	assert(serializeToJsonString(double.nan) == "null");