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[Bug c/54006] __atomic_always_lock_free inconsistent with __GCC_ATOMIC_INT_LOCK_FREE et al.
- From: "hp at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 20 Jul 2012 04:06:41 +0000
- Subject: [Bug c/54006] __atomic_always_lock_free inconsistent with __GCC_ATOMIC_INT_LOCK_FREE et al.
- Auto-submitted: auto-generated
- References: <bug-54006-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54006
--- Comment #2 from Hans-Peter Nilsson <hp at gcc dot gnu.org> 2012-07-20 04:06:41 UTC ---
FWIW, cpp_atomic_builtins is called before the target TARGET_INIT_LIBFUNCS is
called (at least on the 4.7 branch) so using can_compare_and_swap_p as the / in
the common function (as is needed) requires moving some initialization bits to
avoid a SEGV. There be dragons there. (Not that they shouldn't be slayed,
just beware.)