From 325727953cc316a8cad1340380fc36c8e25dac94 Mon Sep 17 00:00:00 2001
From: Sergey Linev <S.Linev@gsi.de>
Date: Mon, 31 Oct 2016 09:15:52 +0100
Subject: [PATCH] json: store empty const char* as "", not as null

this is how binary I/O works.
Empty string or null will be always restored as empty string

Signed-off-by: Sergey Linev <S.Linev@gsi.de>
---
 io/io/src/TBufferJSON.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/io/io/src/TBufferJSON.cxx b/io/io/src/TBufferJSON.cxx
index c99e9a9144376..2632659205ad0 100644
--- a/io/io/src/TBufferJSON.cxx
+++ b/io/io/src/TBufferJSON.cxx
@@ -1398,7 +1398,7 @@ void TBufferJSON::PerformPostProcessing(TJSONStackObj *stack,
 
    if (isCharStar) {
       stack->fValues.Delete();
-      if (fValue == "0") fValue = "null";
+      if (fValue == "0") fValue = "\"\"";
    } else if (isTString || isSTLstring) {
       // just remove all kind of string length information