From: David Mosberger <davidm@napali.hpl.hp.com>
To: linux-ia64@vger.kernel.org
Subject: Re: [Linux-ia64] gcc/binutils bug building parted?
Date: Wed, 13 Mar 2002 05:01:01 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590701905252@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590701905246@msgid-missing>
>>>>> On Tue, 12 Mar 2002 20:45:07 +0000, Richard Hirst <rhirst@linuxcare.com> said:
Richard> I use parted to create GPT tables, which have a partition
Richard> type GUID in the first 16 bytes of each table entry. That
Richard> entry is being written offset by one byte, so a partition
Richard> table entry might look like
Richard> 0000480 00 a2 a0 d0 eb e5 b9 33 44 87 c0 68 b6 b7 26 99
Richard> 0000490 83 79 f1 c4 f9 32 46 f7 9a 51 cc 85 c5 d8 a9 68
Richard> 00004a0 00 28 03 00 00 00 00 00 00 40 06 00 00 00 00 00
Richard> 00004b0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Richard> instead of
Richard> 0000480 a2 a0 d0 eb e5 b9 33 44 87 c0 68 b6 b7 26 99 c7
Richard> 0000490 83 79 f1 c4 f9 32 46 f7 9a 51 cc 85 c5 d8 a9 68
Richard> 00004a0 00 28 03 00 00 00 00 00 00 40 06 00 00 00 00 00
Richard> 00004b0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Richard> I've included the relevant bit of code below, along with a
Richard> disassembly and a dump of the relevant bit of .rodata. The
Richard> significant bit is that
Richard> "gpt_part_data->pte->PartitionTypeGuid Richard> PARTITION_BASIC_DATA_GUID" is implemented as a memcpy(),
Richard> with a source of .rodata+0xe7, while we can see in the dump
Richard> that the guid is actually at .rodata+0xe8.
Richard> I've never looked at ia64 asm before today, but I think
Richard> I've interpreted it correctly. This is under debian, but
Richard> the same corruption has been seen under RedHat 7.2.
That is pretty weird. Does the problem occur with gcc3 as well? It might
also help to look at the assembly code.
--david
next prev parent reply other threads:[~2002-03-13 5:01 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-03-12 20:45 [Linux-ia64] gcc/binutils bug building parted? Richard Hirst
2002-03-13 5:01 ` David Mosberger [this message]
2002-03-13 11:57 ` Richard Hirst
2002-03-13 18:34 ` David Mosberger
2002-03-13 18:52 ` Matt_Domsch
2002-03-14 1:11 ` Richard Hirst
2002-03-15 13:15 ` Richard Hirst
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=marc-linux-ia64-105590701905252@msgid-missing \
--to=davidm@napali.hpl.hp.com \
--cc=linux-ia64@vger.kernel.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