https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80463
--- Comment #14 from Arseny Solokha <asolokha at gmx dot com> --- Thank you for the analysis. I can fill a separate PR for this testcase if that's more appropriate. Meanwhile, I got two more testcases which I've just reported as PR83972 and PR83973 not to clutter this PR too much, though both of them may be actually duplicates of this one.