Bug#122547: marked as done ([gcc-3.0] cc1plus segfault in strength reduction)
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>From randolph@tausq.org Wed Dec 05 11:06:48 2001
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Date: Wed, 5 Dec 2001 09:06:43 -0800
From: Randolph Chung <tausq@debian.org>
To: submit@bugs.debian.org
Subject: [gcc-3.0] cc1plus segfault in strength reduction
Message-ID: <[🔎] 20011205090643.R944@tausq.org>
Reply-To: Randolph Chung <tausq@debian.org>
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Package: gcc-3.0
Version: 3.0.2ds4-4
Severity: important
Tags: patch
The attached patch fixes a strength reduction ICE seen when compiling
groff on hppa-linux. It was contributed by Alan Modra. I'm still in the
process of verifying this with the gcc hppa maintainer (Dave Anglin) but
wanted to send this to the bts first as a heads up.
randolph
--
Debian Developer <tausq@debian.org>
http://www.TauSq.org/
#! /bin/sh -e
# DP: Patch to fix strength-reduction optimization from Alan Modra
dir=
if [ $# -eq 3 -a "$2" = '-d' ]; then
pdir="-d $3"
dir="$3/"
elif [ $# -ne 1 ]; then
echo >&2 "`basename $0`: script expects -patch|-unpatch as argument"
exit 1
fi
case "$1" in
-patch)
patch $pdir -f --no-backup-if-mismatch -p1 < $0
#cd ${dir}gcc && autoconf
;;
-unpatch)
patch $pdir -f --no-backup-if-mismatch -R -p1 < $0
#rm ${dir}gcc/configure
;;
*)
echo >&2 "`basename $0`: script expects -patch|-unpatch as argument"
exit 1
esac
exit 0
--- gcc/unroll.c.orig Wed Dec 5 08:54:17 2001
+++ gcc/unroll.c Wed Dec 5 08:55:54 2001
@@ -3508,13 +3508,16 @@
do
{
- if (GET_CODE (temp) == JUMP_INSN
- /* Previous unrolling may have generated new insns not covered
- by the uid_luid array. */
- && INSN_UID (JUMP_LABEL (temp)) < max_uid_for_loop
+ if (GET_CODE (temp) != JUMP_INSN)
+ continue;
+ if (/* It's an addr_diff_vec */
+ JUMP_LABEL(temp) == 0
+ || (/* Previous unrolling may have generated new insns not covered
+ by the uid_luid array. */
+ INSN_UID (JUMP_LABEL (temp)) < max_uid_for_loop
/* Check if we jump back into the loop body. */
&& INSN_LUID (JUMP_LABEL (temp)) > INSN_LUID (loop->top)
- && INSN_LUID (JUMP_LABEL (temp)) < INSN_LUID (loop->cont))
+ && INSN_LUID (JUMP_LABEL (temp)) < INSN_LUID (loop->cont)))
{
if (loop_dump_stream)
fprintf (loop_dump_stream,
---------------------------------------
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Date: Sun, 9 Dec 2001 22:09:37 +0100
To: 122547-done@bugs.debian.org, 121924-done@bugs.debian.org
Subject: fixed in gcc-3.0 (3.0.3-0pre011209)
X-Mailer: VM 6.89 under 21.1 (patch 14) "Cuyahoga Valley" XEmacs Lucid
Delivered-To: 122547-done@bugs.debian.org
gcc-3.0 (1:3.0.3ds0-0pre011209) unstable; urgency=medium
.
* Update to CVS sources (011208). Frozen for upstream 3.0.3 release.
* Apply contrib/PR3145.patch, a backport of Nathan Sidwell's patch to
fix PR c++/3145, the infamous "virtual inheritance" bug. This affected
especially KDE2 (eg. artsd). Franz Sirl <Franz.Sirl-kernel@lauterbach.com>
* cc1plus segfault in strength reduction fixed upstream. Closes: #122547.
* debian/patches/gcc-ia64-NaT.dpatch: Add patch to avoid a bug that can
cause miscompiled userapps to crash the kernel. Closes: #121924.
* Reenable shared libgcc for powerpc. Fixed upstream.
http://gcc.gnu.org/ml/gcc-patches/2001-11/msg00340.html
debian/patches/libgcc-powerpc.dpatch: New patch.
* Add upstream changelogs.
* Remove gij alternative. Move to gij package.
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