https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94409
--- Comment #2 from gcc-bugzilla at vlasiu dot net --- (In reply to Jonathan Wakely from comment #1) > N.B. GCC 7 is no longer supported and will not be fixed (but the bug is also > present in supported releases). We are going to switch soon to GCC 8.3.1 or 9.1.1. It would be nice to have a patch for any of those versions. Thank you.