From 7cca16e9f1d491879cb472263449f4228a086a20 Mon Sep 17 00:00:00 2001
From: Tuomas Tynkkynen <tuomas@tuxera.com>
Date: Tue, 21 Aug 2018 13:29:17 +0300
Subject: [PATCH] spidermonkey_52: Fix on ARMv6

Arch Linux applies the CFLAGS always, as does Debian, so do the same.
---
 pkgs/development/interpreters/spidermonkey/52.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pkgs/development/interpreters/spidermonkey/52.nix b/pkgs/development/interpreters/spidermonkey/52.nix
index bfbc48e753b7..ecbb1abb40ca 100644
--- a/pkgs/development/interpreters/spidermonkey/52.nix
+++ b/pkgs/development/interpreters/spidermonkey/52.nix
@@ -13,6 +13,12 @@ in stdenv.mkDerivation rec {
   buildInputs = [ readline icu zlib nspr ];
   nativeBuildInputs = [ autoconf213 pkgconfig perl which python2 zip ];
 
+  # Apparently this package fails to build correctly with modern compilers, which at least
+  # on ARMv6 causes polkit testsuite to break with an assertion failure in spidermonkey.
+  # These flags were stolen from:
+  # https://git.archlinux.org/svntogit/packages.git/tree/trunk/PKGBUILD?h=packages/js52
+  NIX_CFLAGS_COMPILE = "-fno-delete-null-pointer-checks -fno-strict-aliasing -fno-tree-vrp";
+
   patches = [
     # needed to build gnome3.gjs
     (fetchpatch {