From: David Stacey <drstacey@tiscali.co.uk>
To: cygwin@cygwin.com
Subject: Re: static vs. shared linking
Date: Mon, 30 Mar 2015 19:17:00 -0000 [thread overview]
Message-ID: <5519A0E1.6020707@tiscali.co.uk> (raw)
In-Reply-To: <20150330105529.GJ29875@calimero.vinschen.de>
On 30/03/15 11:55, Corinna Vinschen wrote:
> On Mar 25 22:42, David Stacey wrote:
>> I've never had much joy out of addr2line before, and I'm struggling to
>> recreate what you've done. I've added '-g' to the command line, run 'go.sh'
>> again. This generates a fresh stackdump file, and then I do:
>>
>> awk '/^[0-9]/{print $2}' shared_test.exe.stackdump | addr2line -f -e
>> shared_test.exe
>>
>> but I just see question marks. Please could you show the exact lines you're
>> using.
> addr2line is a bit dumb and needs help. What I do is to cat the
> stackdump file and look at the addresses. They usually show where
> the stuff comes from:
>
> $ gawk '/^0/{print $2}' mkgroup.exe.stackdump
> 7FFBDC82DDB6
> 001800FEC36
> 001800FE188
> 001800CF471
> 001800CF53D
> 0018007EAC1
> 00100402DE6
> 00180049411
> 00180046369
> 00180046180
> 00180049488
> 00100401351
> 00100401010
> 7FFBD9FE13D2
> 7FFBDC85EB64
>
> The 7f addresses are from OS DLLs you can't read with addr2line.
> 0018xxx is the Cygwin DLL, 0010xxx is the application itself. Other
> addresses are other DLLs. Just check the addresses against
> /etc/rebase.db.x86_64.
>
> Then call addr2line for each object file, e.g.:
>
> $ addr2line -e /usr/bin/cygwin1.dll 001800FEC36 001800FE188 001800CF471
> [...]/cygwin/passwd.cc:576
> [...]/cygwin/passwd.cc:353
> [...]/cygwin/grp.cc:413
> $ addr2line -e /usr/bin/mkgroup.exe 00100401351 00100401010
> /usr/src/debug/cygwin-1.7.35-1/winsup/cygwin/lib/cygwin_crt0.c:22
> /usr/src/debug/cygwin-1.7.35-1/winsup/cygwin/crt0.c:34
Thank you for your reply and the explanation. That requires quite a bit
of knowledge before addr2line is usable - no wonder I've never had
anything sensible out of it before!
Back to the matter in hand - I don't suppose you had thoughts on why my
simple application crashes when linked as shared, but works fine when
linked statically?
Dave.
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next prev parent reply other threads:[~2015-03-30 19:15 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-24 8:07 David Stacey
2015-03-24 18:50 ` David Stacey
2015-03-25 9:17 ` Corinna Vinschen
2015-03-25 17:10 ` Warren Young
2015-03-25 22:42 ` David Stacey
2015-03-25 23:28 ` David Stacey
2015-03-25 22:48 ` David Stacey
2015-03-30 11:04 ` Corinna Vinschen
2015-03-30 19:17 ` David Stacey [this message]
2015-03-30 23:02 ` Andrey Repin
2015-03-31 0:50 ` David Stacey
2015-03-31 3:26 ` Andrey Repin
2015-03-31 9:05 ` Achim Gratz
2015-03-31 10:04 ` Corinna Vinschen
2015-03-31 9:07 ` Corinna Vinschen
2015-03-31 18:00 ` David Stacey
2015-04-09 8:15 ` David Stacey
2015-04-09 17:24 ` Corinna Vinschen
2015-04-11 18:51 ` David Stacey
2015-04-09 21:32 ` Larry Hall (Cygwin)
2015-04-11 19:21 ` David Stacey
2015-03-25 23:29 ` David Stacey
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