https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80122
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2017-03-21
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot
gnu.org
Ever confirmed|0 |1
Known to fail| |4.6.4
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
With 4.4.7 it works at -O0 but fails at -O2. Starting with 4.5 it fails at -O0
as well.
The issue is that we first inline send_msg_to_gm_w_dev_t into send_msg_to_gm
where the magic doesn't work, and then we inline send_msg_to_gm.
This is how early inlining works (inline from the leafs), this is best to
catch optimizations but it doesn't work for __builtin_va_arg_pack () handling
(well, we simply need to retain it instead of expansing it to nothing).
Confirmed.
