public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
From: "ro at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/67912] New: [6 regression] ICE in gen_lowpart_common, at emit-rtl.c:1399
Date: Fri, 09 Oct 2015 17:42:00 -0000	[thread overview]
Message-ID: <bug-67912-4@http.gcc.gnu.org/bugzilla/> (raw)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67912

            Bug ID: 67912
           Summary: [6 regression] ICE in gen_lowpart_common, at
                    emit-rtl.c:1399
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ro at gcc dot gnu.org
                CC: hubicka at gcc dot gnu.org
  Target Milestone: ---
              Host: i386-pc-solaris2.*
            Target: i386-pc-solaris2.*
             Build: i386-pc-solaris2.*

Solaris/x86 bootstrap is currently broken compiling the 64-bit s-regpat.adb:

$ /var/gcc/regression/trunk/10-gcc/build/./gcc/xgcc
-B/var/gcc/regression/trunk/10-gcc/build/./gcc/
-B/vol/gcc/i386-pc-solaris2.10/bin/ -B/vol/gcc/i386-pc-solaris2.10/lib/
-isystem /vol/gcc/i386-pc-solaris2.10/include -isystem
/vol/gcc/i386-pc-solaris2.10/sys-include    -c -g -O2 -m64 -fpic  -W -Wall
-gnatpg -nostdinc -m64  s-regpat.adb -o s-regpat.o
+===========================GNAT BUG DETECTED==============================+
| 6.0.0 20151009 (experimental) [trunk revision 228636] (i386-pc-solaris2.10)
GCC error:|
| in gen_lowpart_common, at emit-rtl.c:1399                                |
| Error detected around s-regpat.adb:1029:22           

This happens already with the stage1 compiler, though.  A reghunt determined
that
this patch

2015-10-07  Jan Hubicka  <hubicka@ucw.cz>

        * expr.c (store_expr_with_bounds): Handle aggregate moves from
        BLKmode.
        * gimple-expr.c (useless_type_conversion_p): Do not use TYPE_CANONICAL
        to define gimple type system; compare aggregates only by size.

is the culprit.

  Rainer


             reply	other threads:[~2015-10-09 17:42 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-10-09 17:42 ro at gcc dot gnu.org [this message]
2015-10-09 17:42 ` [Bug middle-end/67912] " ro at gcc dot gnu.org
2015-10-10  7:59 ` dominiq at lps dot ens.fr
2015-10-11 12:34 ` ro at CeBiTec dot Uni-Bielefeld.DE
2015-10-11 21:47 ` doko at gcc dot gnu.org
2015-10-12 16:07 ` [Bug middle-end/67912] [6 Regression] " danglin at gcc dot gnu.org
2015-10-13 16:35 ` aoliva at gcc dot gnu.org
2015-10-13 16:39 ` aoliva 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-67912-4@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).