https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71291
--- Comment #5 from Georg Koppen <gk at torproject dot org> --- And that's the g++ command line: /usr/bin/g++ -std=gnu++11 -o Unified_cpp_gfx_layers2.o -c -I/home/thomas/Arbeit/Tor/mozilla-central/obj-x86_64-pc-linux-gnu/dist/stl_wrappers -I/home/thomas/Arbeit/Tor/mozilla-central/obj-x86_64-pc-linux-gnu/dist/system_wrappers -include /home/thomas/Arbeit/Tor/mozilla-central/config/gcc_hidden.h -DNDEBUG=1 -DTRIMMED=1 -DGOOGLE_PROTOBUF_NO_RTTI -DOS_POSIX=1 -DOS_LINUX=1 -DSTATIC_EXPORTABLE_JS_API -DMOZILLA_INTERNAL_API -DIMPL_LIBXUL -I/home/thomas/Arbeit/Tor/mozilla-central/gfx/layers -I/home/thomas/Arbeit/Tor/mozilla-central/obj-x86_64-pc-linux-gnu/gfx/layers -I/home/thomas/Arbeit/Tor/mozilla-central/obj-x86_64-pc-linux-gnu/ipc/ipdl/_ipdlheaders -I/home/thomas/Arbeit/Tor/mozilla-central/ipc/chromium/src -I/home/thomas/Arbeit/Tor/mozilla-central/ipc/glue -I/home/thomas/Arbeit/Tor/mozilla-central/docshell/base -I/home/thomas/Arbeit/Tor/mozilla-central/layout/base -I/home/thomas/Arbeit/Tor/mozilla-central/layout/generic -I/home/thomas/Arbeit/Tor/mozilla-central/gfx/skia -I/home/thomas/Arbeit/Tor/mozilla-central/gfx/skia/skia/include/config -I/home/thomas/Arbeit/Tor/mozilla-central/gfx/skia/skia/include/core -I/home/thomas/Arbeit/Tor/mozilla-central/gfx/skia/skia/include/gpu -I/home/thomas/Arbeit/Tor/mozilla-central/gfx/skia/skia/include/utils -I/home/thomas/Arbeit/Tor/mozilla-central/obj-x86_64-pc-linux-gnu/dist/include -I/home/thomas/Arbeit/Tor/mozilla-central/obj-x86_64-pc-linux-gnu/dist/include/nspr -I/home/thomas/Arbeit/Tor/mozilla-central/obj-x86_64-pc-linux-gnu/dist/include/nss -fPIC -DMOZILLA_CLIENT -include /home/thomas/Arbeit/Tor/mozilla-central/obj-x86_64-pc-linux-gnu/mozilla-config.h -MD -MP -MF .deps/Unified_cpp_gfx_layers2.o.pp -Wall -Wc++11-compat -Wempty-body -Wignored-qualifiers -Woverloaded-virtual -Wpointer-arith -Wsign-compare -Wtype-limits -Wunreachable-code -Wwrite-strings -Wc++14-compat -Wno-invalid-offsetof -Wno-error=maybe-uninitialized -Wno-error=deprecated-declarations -Wno-error=array-bounds -fsanitize=address -Dxmalloc=myxmalloc -fno-exceptions -fno-strict-aliasing -fno-rtti -fno-exceptions -fno-math-errno -pthread -pipe -g -freorder-blocks -Os -fno-omit-frame-pointer -I/home/thomas/Arbeit/Tor/mozilla-central/obj-x86_64-pc-linux-gnu/dist/include/cairo -I/home/thomas/Arbeit/Tor/mozilla-central/widget/gtk/compat-gtk3 -pthread -I/usr/include/gtk-3.0/unix-print -I/usr/include/gtk-3.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/dbus-1.0 -I/usr/lib/x86_64-linux-gnu/dbus-1.0/include -I/usr/include/gtk-3.0 -I/usr/include/gio-unix-2.0/ -I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/include/harfbuzz -I/usr/include/pango-1.0 -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/libpng16 -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -Wno-error=shadow /home/thomas/Arbeit/Tor/mozilla-central/obj-x86_64-pc-linux-gnu/gfx/layers/Unified_cpp_gfx_layers2.cpp Let me know if you need something more or I could do something to help tracking this down.