From bd1ea14e442c23bffea37501dec6a2d7cfd2794e Mon Sep 17 00:00:00 2001
From: Franz Pletz <fpletz@fnordicwalking.de>
Date: Sun, 3 Nov 2019 13:32:09 +0100
Subject: [PATCH] libreswan: fix build with gcc9

---
 pkgs/tools/networking/libreswan/default.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pkgs/tools/networking/libreswan/default.nix b/pkgs/tools/networking/libreswan/default.nix
index 9a0b8c9ebf5..dd0137a1463 100644
--- a/pkgs/tools/networking/libreswan/default.nix
+++ b/pkgs/tools/networking/libreswan/default.nix
@@ -30,6 +30,7 @@ stdenv.mkDerivation {
     "-Wno-error=implicit-fallthrough"
     "-Wno-error=format-truncation"
     "-Wno-error=pointer-compare"
+    "-Wno-error=stringop-truncation"
   ];
 
   nativeBuildInputs = [ makeWrapper pkgconfig ];