Bug#58930: marked as done (linking against librt causes segfault in gethostbyname on m68k)
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and subject line linking against librt causes segfault in gethostbyname on m68k
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Date: Thu, 24 Feb 2000 20:17:30 -0500 (EST)
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From: Doug Larrick <doug@ties.org>
To: submit@bugs.debian.org
Subject: linking against librt causes segfault in gethostbyname on m68k
Cc: doug@ties.org
Sender: Doug Larrick <doug@jekyl.doug.ties.org>
Package: libc6
Version: 2.1.3-2
Linking simple test program that calls gethostbyname() against librt
on m68k causes a segmentation fault. The system is up-to-date against
potato (frozen) as of the Feb. 23, 2000 packages list.
I noticed this problem because ntpdate on m68k exhibits it. I
narrowed it to the following example.
Transcript:
inigo:~$ uname -a
Linux inigo 2.2.10 #54 Sun Aug 1 00:02:49 EDT 1999 m68k unknown
inigo:~$ cat gethosttest.c
#include <stdio.h>
#include <stdlib.h>
#include <netdb.h>
int main (int argc, char **argv)
{
struct hostent *hp;
char *name = argv[1];
hp = gethostbyname(name);
printf("Gotit: %x\n", hp);
fflush(stdout);
printf("%s: %X\n", hp->h_name, hp->h_addr_list[0]);
}
inigo:~$ cc gethosttest.c
inigo:~$ ./a.out www.debian.org
Gotit: c00cb5ec
www.debian.org: 800027D4
inigo:~$ ldd a.out
libc.so.6 => /lib/libc.so.6 (0xc0015000)
/lib/ld.so.1 => /lib/ld.so.1 (0xc0000000)
inigo:~$ cc -lrt gethosttest.c
inigo:~$ ./a.out www.debian.org
Segmentation fault
inigo:~$ ldd a.out
librt.so.1 => /lib/librt.so.1 (0xc0015000)
libc.so.6 => /lib/libc.so.6 (0xc001a000)
libpthread.so.0 => /lib/libpthread.so.0 (0xc00d2000)
/lib/ld.so.1 => /lib/ld.so.1 (0xc0000000)
inigo:~$
--
Doug Larrick doug@ties.org doug.larrick@compaq.com AIM: DougLarick
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Date: Mon, 24 Mar 2003 09:26:35 +0900
Message-ID: <80r88xk3t0.wl@oris.opensource.jp>
From: GOTO Masanori <gotom@debian.or.jp>
To: 58930-done@bugs.debian.org
Subject: Re: linking against librt causes segfault in gethostbyname on m68k
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> Linking simple test program that calls gethostbyname() against librt
> on m68k causes a segmentation fault. The system is up-to-date against
> potato (frozen) as of the Feb. 23, 2000 packages list.
>
> I noticed this problem because ntpdate on m68k exhibits it. I
> narrowed it to the following example.
>
> Transcript:
>
> inigo:~$ uname -a
> Linux inigo 2.2.10 #54 Sun Aug 1 00:02:49 EDT 1999 m68k unknown
> inigo:~$ cat gethosttest.c
> #include <stdio.h>
> #include <stdlib.h>
> #include <netdb.h>
>
> int main (int argc, char **argv)
> {
> struct hostent *hp;
> char *name = argv[1];
>
> hp = gethostbyname(name);
>
> printf("Gotit: %x\n", hp);
> fflush(stdout);
>
> printf("%s: %X\n", hp->h_name, hp->h_addr_list[0]);
>
> }
> inigo:~$ cc gethosttest.c
> inigo:~$ ./a.out www.debian.org
> Gotit: c00cb5ec
> www.debian.org: 800027D4
> inigo:~$ ldd a.out
> libc.so.6 => /lib/libc.so.6 (0xc0015000)
> /lib/ld.so.1 => /lib/ld.so.1 (0xc0000000)
> inigo:~$ cc -lrt gethosttest.c
> inigo:~$ ./a.out www.debian.org
> Segmentation fault
> The original submitter of bug #58930 does not have an m68-linux system
> anymore. Can I get one of you people to verify it for me please? I
> cannot reproduce it on i386, sparc or powerpc, but the submitter was
> experiencing the problem on m68k, so I want to verify the problem isn't
> still there.
It's fixed in stable.
crest:~/bugs/58930> cc gethosttest.c
crest:~/bugs/58930> ./a.out www.debian.org
Gotit: c01033e0
www.debian.org: 80002790
crest:~/bugs/58930> cc -lrt gethosttest.c
./a.out www.debian.org
crest:~/bugs/58930> ./a.out www.debian.org
Gotit: c01153e0
www.debian.org: 800027C8
crest:~/bugs/58930> dpkg -s libc6 | grep Version
Version: 2.2.5-11.2
crest:~/bugs/58930>
I close this bug.
Regards,
-- gotom
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