From bbb3bcb1652a2fa837e5d9e49d36876f6d9e231e Mon Sep 17 00:00:00 2001
From: Yaroslav Bolyukin <iam@lach.pw>
Date: Sun, 22 Aug 2021 00:26:22 +0300
Subject: Replace invalid characters in json logger

Fixes #5159

Signed-off-by: Yaroslav Bolyukin <iam@lach.pw>
---
 src/libutil/logging.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libutil/logging.cc b/src/libutil/logging.cc
index 6b9b850ca..7d6090e0a 100644
--- a/src/libutil/logging.cc
+++ b/src/libutil/logging.cc
@@ -163,7 +163,7 @@ struct JSONLogger : Logger {
 
     void write(const nlohmann::json & json)
     {
-        prevLogger.log(lvlError, "@nix " + json.dump());
+        prevLogger.log(lvlError, "@nix " + json.dump(-1, ' ', false, nlohmann::json::error_handler_t::replace));
     }
 
     void log(Verbosity lvl, const FormatOrString & fs) override
-- 
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