public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/55388] [4.8 regression] ICE in int_mode_for_mode at stor-layout.c:423 breaks sparc64-linux bootstrap
Date: Thu, 22 Nov 2012 17:48:00 -0000 [thread overview]
Message-ID: <bug-55388-4-MJIbflmIP5@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-55388-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55388
Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
AssignedTo|unassigned at gcc dot |ebotcazou at gcc dot
|gnu.org |gnu.org
Target Milestone|--- |4.8.0
--- Comment #10 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2012-11-22 17:47:38 UTC ---
> It's caused by r193599:
> http://gcc.gnu.org/ml/gcc-cvs/2012-11/msg00546.html
Yep, the problem is that alias.c:nonoverlapping_component_refs_p considers that
accesses to bitfields never overlap with accesses to other components...
I also think that the size handling in set_mem_attributes_minus_bitpos might
need to be further refined, now that bitfields are handled:
/* Respect mode size. */
attrs.size_known_p = defattrs->size_known_p;
attrs.size = defattrs->size;
/* ??? Is this really necessary? We probably should always get
the size from the type below. */
I don't see how the final size can be smaller than the mode size.
next prev parent reply other threads:[~2012-11-22 17:48 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-19 9:11 [Bug bootstrap/55388] New: " mikpe at it dot uu.se
2012-11-19 19:33 ` [Bug bootstrap/55388] " mikpe at it dot uu.se
2012-11-20 22:22 ` mikpe at it dot uu.se
2012-11-21 7:52 ` mikpe at it dot uu.se
2012-11-21 18:56 ` rsandifo at gcc dot gnu.org
2012-11-21 21:00 ` mikpe at it dot uu.se
2012-11-21 21:09 ` mikpe at it dot uu.se
2012-11-21 23:29 ` rsandifo at gcc dot gnu.org
2012-11-22 8:33 ` ebotcazou at gcc dot gnu.org
2012-11-22 11:03 ` ebotcazou at gcc dot gnu.org
2012-11-22 17:48 ` ebotcazou at gcc dot gnu.org [this message]
2012-11-22 18:27 ` ebotcazou at gcc dot gnu.org
2012-11-23 7:56 ` [Bug rtl-optimization/55388] [4.8 regression] ICE in int_mode_for_mode at stor-layout.c:423 rsandifo at gcc dot gnu.org
2012-11-23 16:01 ` ebotcazou at gcc dot gnu.org
2012-11-23 16:02 ` ebotcazou at gcc dot gnu.org
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=bug-55388-4-MJIbflmIP5@http.gcc.gnu.org/bugzilla/ \
--to=gcc-bugzilla@gcc.gnu.org \
--cc=gcc-bugs@gcc.gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).