https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96378
--- Comment #5 from Nick Briggs ---
Thanks! configuring with --enable-checking=release allowed it to compile.
The final configure that I used was:
../gcc-master/configure prefix=/opt/gcc --disable-werror
--enable-checking=release CC="gcc -m64
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96378
--- Comment #3 from Nick Briggs ---
This is still a problem, tested at commit
217d5beaff9987a9845155fc796322b5f8bb876d, Dec 17th, 2020
Starting with the same gcc (7.3.0) as before, but invoked with CC="gcc -m64" to
make sure that we're building
