From mboxrd@z Thu Jan  1 00:00:00 1970
From: dje@watson.ibm.com
To: gcc-gnats@gcc.gnu.org
Cc: john@feith.com
Subject: other/4520: cselib.c hash_rtx incorrectly hashes based on rtx address
Date: Wed, 10 Oct 2001 07:56:00 -0000
Message-id: <20011010144755.14575.qmail@sourceware.cygnus.com>
X-SW-Source: 2001-10/msg00192.html
List-Id: <gcc-prs.sourceware.org>

>Number:         4520
>Category:       other
>Synopsis:       cselib.c hash_rtx incorrectly hashes based on rtx address
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Oct 10 07:56:00 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     dje@watson.ibm.com
>Release:        3.1 (experimental)
>Organization:
>Environment:
powerpc-ibm-aix4.3
>Description:
cselib.c hash_rtx hashes based on the address of a symbol
or label instead of the contents, assuming that a
symbol will be unique and only appear once.  Hashing based
on the address of internal GCC data structures can produce
non-deterministic results.
>How-To-Repeat:

>Fix:
Work-around error by not applying ggc_strdup() to symbols
in rs6000.c which covers up the design mistake.
>Release-Note:
>Audit-Trail:
>Unformatted: