From 7a8817e87fea75b3970cacd8cbf265b9bb5a2659 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Thomas=20T=2E=20Jarl=C3=B8v?=
 <ThomasTJdev@users.noreply.github.com>
Date: Sat, 15 May 2021 21:26:15 +0200
Subject: [PATCH] Escape `%00` / `\0` in `dbQuote` (#18015) [backport:1.4]

Fix https://github.com/nim-lang/Nim/issues/17925

(cherry picked from commit 99788ee50426946d954e7311f567414b39f7b8d7)
---
 lib/impure/db_postgres.nim | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/impure/db_postgres.nim b/lib/impure/db_postgres.nim
index f9f584663d..5f77c56a48 100644
--- a/lib/impure/db_postgres.nim
+++ b/lib/impure/db_postgres.nim
@@ -110,7 +110,9 @@ proc dbQuote*(s: string): string =
   ## DB quotes the string.
   result = "'"
   for c in items(s):
-    if c == '\'': add(result, "''")
+    case c
+    of '\'': add(result, "''")
+    of '\0': add(result, "\\0")
     else: add(result, c)
   add(result, '\'')