--- firefox-78.0/layout/base/PresShell.orig.h	2020-06-26 20:10:50.168878803 +0200
+++ firefox-78.0/layout/base/PresShell.h	2020-06-26 23:13:24.174571951 +0200
@@ -257,7 +257,7 @@
    * to the same aSize value.  AllocateFrame is infallible and will abort
    * on out-of-memory.
    */
-  void* AllocateFrame(nsQueryFrame::FrameIID aID, size_t aSize) {
+  void* __attribute__((optimize("no-lifetime-dse"))) AllocateFrame(nsQueryFrame::FrameIID aID, size_t aSize) {
 #define FRAME_ID(classname, ...)                                  \
   static_assert(size_t(nsQueryFrame::FrameIID::classname##_id) == \
                     size_t(eArenaObjectID_##classname),           \