Re: lib/56839 (GCC emits wrong codes for compare_and_swap_1 bultins on armv5 (el & eb))

[riastradh%NetBSD.org@localhost]

Synopsis: GCC emits wrong codes for compare_and_swap_1 bultins on armv5 (el & eb)

Responsible-Changed-From-To: port-arm-maintainer->lib-bug-people
Responsible-Changed-By: riastradh%NetBSD.org@localhost
Responsible-Changed-When: Fri, 24 Jul 2026 18:29:52 +0000
Responsible-Changed-Why:
Not just a port-arm issue now -- it's happening on sparc and sh3 after
the change that fixed it on arm:

https://www.netbsd.org/~martin/landisk-atf/Y2026_05/313_atf.html#lib_libc_atomic_t___sync_compare_and_swap___sync_val_compare_and_swap_1
...actually, maybe it was broken before and is still broken:
https://www.netbsd.org/~martin/landisk-atf/Y2026_04/312_atf.html#lib_libc_atomic_t___sync_compare_and_swap___sync_val_compare_and_swap_1

https://releng.netbsd.org/b5reports/sparc/commits-2026.05.html#build-2026.05.03.11.48.02