From: msnyder@sonic.net
To: gdb-patches@sourceware.org, binutils@sourceware.org
Subject: [PATCH] opcodes/i386-dis.c, print_insn, null ptr.
Date: Wed, 01 Aug 2007 21:15:00 -0000 [thread overview]
Message-ID: <6845.12.7.175.2.1186002936.squirrel@webmail.sonic.net> (raw)
[-- Attachment #1: Type: text/plain, Size: 174 bytes --]
If we come to this point via the default case in the switch
statement above, we will not have updated 'dp' and dp->name
will still be null. Then putop will dereference it.
[-- Attachment #2: 19b.txt --]
[-- Type: text/plain, Size: 1092 bytes --]
2007-08-01 Michael Snyder <msnyder@access-company.com>
* i386-dis.c (print_insn): Guard against NULL.
Index: i386-dis.c
===================================================================
RCS file: /cvs/src/src/opcodes/i386-dis.c,v
retrieving revision 1.131
diff -p -6 -r1.131 i386-dis.c
*** i386-dis.c 29 Jul 2007 19:43:36 -0000 1.131
--- i386-dis.c 1 Aug 2007 21:11:02 -0000
*************** print_insn (bfd_vma pc, disassemble_info
*** 3779,3791 ****
default:
oappend (INTERNAL_DISASSEMBLER_ERROR);
break;
}
}
! if (putop (dp->name, sizeflag) == 0)
{
for (i = 0; i < MAX_OPERANDS; ++i)
{
obufp = op_out[i];
op_ad = MAX_OPERANDS - 1 - i;
if (dp->op[i].rtn)
--- 3779,3791 ----
default:
oappend (INTERNAL_DISASSEMBLER_ERROR);
break;
}
}
! if (dp->name != NULL && putop (dp->name, sizeflag) == 0)
{
for (i = 0; i < MAX_OPERANDS; ++i)
{
obufp = op_out[i];
op_ad = MAX_OPERANDS - 1 - i;
if (dp->op[i].rtn)
next reply other threads:[~2007-08-01 21:15 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-01 21:15 msnyder [this message]
2007-08-01 22:00 ` H.J. Lu
2007-08-02 0:40 ` msnyder
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=6845.12.7.175.2.1186002936.squirrel@webmail.sonic.net \
--to=msnyder@sonic.net \
--cc=binutils@sourceware.org \
--cc=gdb-patches@sourceware.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