https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82600
--- Comment #2 from Sylvestre Ledru <sylvestre at debian dot org> --- the command line: /usr/bin/g++-8 -std=gnu++11 -o Unified_cpp_memory_build0.o -c -I/root/firefox-gcc-last/obj-x86_64-pc-linux-gnu/dist/system_wrappers -include /root/firefox-gcc-last/config/gcc_hidden.h -DDEBUG=1 -DMOZ_MEMORY_IMPL -DMOZ_HAS_MOZGLUE -I/root/firefox-gcc-last/memory/build -I/root/firefox-gcc-last/obj-x86_64-pc-linux-gnu/memory/build -I/root/firefox-gcc-last/obj-x86_64-pc-linux-gnu/dist/include -I/root/firefox-gcc-last/obj-x86_64-pc-linux-gnu/dist/include/nspr -I/root/firefox-gcc-last/obj-x86_64-pc-linux-gnu/dist/include/nss -fPIC -DMOZILLA_CLIENT -include /root/firefox-gcc-last/obj-x86_64-pc-linux-gnu/mozilla-config.h -MD -MP -MF .deps/Unified_cpp_memory_build0.o.pp -Wall -Wc++11-compat -Wempty-body -Wignored-qualifiers -Woverloaded-virtual -Wpointer-arith -Wsign-compare -Wtype-limits -Wunreachable-code -Wwrite-strings -Wno-invalid-offsetof -Wc++14-compat -Wc++1z-compat -Wduplicated-cond -Wimplicit-fallthrough -Wno-error=maybe-uninitialized -Wno-error=deprecated-declarations -Wno-error=array-bounds -Wno-error=free-nonheap-object -Wformat -Wformat-overflow=2 -fno-exceptions -fno-strict-aliasing -fno-rtti -fno-exceptions -fno-math-errno -pthread -pipe -g -freorder-blocks -Os -fno-omit-frame-pointer -Werror -Wno-unused-function -Wno-error=uninitialized -fdiagnostics-color /root/firefox-gcc-last/obj-x86_64-pc-linux-gnu/memory/build/Unified_cpp_memory_build0.cpp