[Bug target/114968] [14/15 Regression] missing `__thiscall` attribute on builtin declaration of `__cxa_thread_atexit()`

[lh_mouse at 126 dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114968

--- Comment #23 from LIU Hao <lh_mouse at 126 dot com> ---
I am afraid I can't do a complete bootstrap any more due to
https://sourceware.org/bugzilla/show_bug.cgi?id=31720. LD is segfaulting
randomly.

I will backport the commit to GCC 14 branch and make a non-bootstrapped build,
then build others as usual.