https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95381
--- Comment #14 from John Paul Adrian Glaubitz <glaubitz at physik dot fu-berlin.de> --- Quick update. The bug actually occurs with "--disable-bootstrap" which is how Matthias Klose configures gcc when building the gcc-snapshot package. Removing the configure flag makes the bootstrap succeed. So my guess is that the system compiler is miscompiling stage1 which then fails to build libstdc++ and only the stage2(3?) compiler works properly. Guess we can mark this PR as invalid then? PS: Happy New Year!
