From 62ad140d1852ac6f90d16e4e03d168896f08d8a7 Mon Sep 17 00:00:00 2001
From: Christopher Dunn <cdunn2001@gmail.com>
Date: Fri, 6 Mar 2015 12:35:58 -0600
Subject: [PATCH] rejectDupKeys

---
 src/lib_json/json_reader.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/lib_json/json_reader.cpp b/src/lib_json/json_reader.cpp
index c79abdf..9ceaf38 100644
--- a/src/lib_json/json_reader.cpp
+++ b/src/lib_json/json_reader.cpp
@@ -1432,6 +1432,11 @@ bool OurReader::readObject(Token& tokenStart) {
           "Missing ':' after object member name", colon, tokenObjectEnd);
     }
     if (name.length() >= (1U<<30)) throw std::runtime_error("keylength >= 2^30");
+    if (features_.rejectDupKeys_ && currentValue().isMember(name)) {
+      std::string msg = "Duplicate key: '" + name + "'";
+      return addErrorAndRecover(
+          msg, tokenName, tokenObjectEnd);
+    }
     Value& value = currentValue()[name];
     nodes_.push(&value);
     bool ok = readValue();