[Bug libstdc++/71049] [6/7 Regression] libstdc++ fails to build --with-default-libstdcxx-abi=gcc4-compatible --disable-libstdcxx-dual-abi

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71049

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Actually, the errors involving CTORDTOR suggest this is a problem with the TM
library support. I think that's meant to be disabled completely with
--disable-libstdcxx-dual-abi, but seems to be causing a bootstrap failure
instead.