[Bug target/122565] RISC-V: libstdc++ using mutexes (vs. atomics) [AKA potential flag day issues for RISC-V]

[palmer at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122565

--- Comment #3 from Palmer Dabbelt <palmer at gcc dot gnu.org> ---
(In reply to Jeffrey A. Law from comment #2)
> We also have the vector passing ABI that is a potential flag day issue.
> 
> We have the control flow integrity bits that may need a flag day as well.

OK, so maybe we should just make a list somewhere?