diff -r d6a688186de0 -r 27c3f029180a MozillaFirefox/MozillaFirefox.spec
--- a/MozillaFirefox/MozillaFirefox.spec	Wed Dec 18 02:16:48 2019 +0100
+++ b/MozillaFirefox/MozillaFirefox.spec	Tue Jan 07 09:47:03 2020 +0100
@@ -27,7 +27,7 @@
 %define devpkg         1
 
 # always build with GCC as SUSE Security Team requires that
-%define clang_build 1
+%define clang_build 0
 
 # PIE, full relro
 %define build_hardened 1
@@ -183,7 +183,7 @@
 Patch20:        mozilla-fix-top-level-asm.patch
 Patch21:        mozilla-bmo1504834-part4.patch
 Patch22:        mozilla-bmo849632.patch
-Patch23:        mozilla-gcc9-lto.patch
+Patch23:        mozilla-bmo1601707.patch
 # Firefox/browser
 Patch101:       firefox-kde.patch
 Patch102:       firefox-branded-icons.patch