https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114742
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2024-04-16
Ever confirmed|0 |1
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I think we need something like this in <bits/c++config.h>
#ifndef __VSX__
# undef _GLIBCXX_LONG_DOUBLE_ALT128_COMPAT
#endif
Otherwise we might set the ALT128_COMPAT macro during configure, but then it
becomes invalidated during compilation of user code if they "downgrade" to
something that doesn't support ieee128, using -mcpu=power6 and/or
-mlong-double-64
