[Bug libc/2569] New: utf-16 iconv module breaks programs

[Bug libc/2569] New: utf-16 iconv module breaks programs

[maestromae at kateos dot org]

I've noticed the following problem using samba/xine-ui:

gconv_db.c:232: __gconv_release_step: Assertion `step->__end_fct == ((void *)0)'
failed.

This happens when utf-16 iconv module is loading.

The bug is easy to replicate - just try to run xine-ui.

# xine
This is xine (X11 gui) - a free video player v0.99.4.
(c) 2000-2004 The xine Team.
xine: gconv_db.c:232: __gconv_release_step: Assertion `step->__end_fct == ((void
*)0)' failed.
Aborted

-- 
           Summary: utf-16 iconv module breaks programs
           Product: glibc
           Version: 2.4
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
        AssignedTo: drepper at redhat dot com
        ReportedBy: maestromae at kateos dot org
                CC: glibc-bugs at sources dot redhat dot com
 GCC build triplet: i486-kateos-linux
  GCC host triplet: i486-kateos-linux
GCC target triplet: i486-kateos-linux


http://sourceware.org/bugzilla/show_bug.cgi?id=2569

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[Bug libc/2569] utf-16 iconv module breaks programs

[drepper at redhat dot com]

------- Additional Comments From drepper at redhat dot com  2006-04-13 16:23 -------
Send a self-contained test case.  Not some reference to a program with dubious
quality.

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           What    |Removed                     |Added
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             Status|NEW                         |WAITING


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[Bug libc/2569] utf-16 iconv module breaks programs

[decimal at us dot ibm dot com]

------- Additional Comments From decimal at us dot ibm dot com  2006-04-19 21:47 -------
Do you have a usable testcase for this?

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[Bug libc/2569] utf-16 iconv module breaks programs

[maestromae at kateos dot org]

------- Additional Comments From maestromae at kateos dot org  2006-04-20 05:48 -------
(In reply to comment #2)
> Do you have a usable testcase for this?

No, in all cases i've tested everything is fine. The problem must be elsewhere.

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           What    |Removed                     |Added
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             Status|WAITING                     |RESOLVED
         Resolution|                            |INVALID


http://sourceware.org/bugzilla/show_bug.cgi?id=2569

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[Bug libc/2569] utf-16 iconv module breaks programs

[maestromae at kateos dot org]

------- Additional Comments From maestromae at kateos dot org  2006-04-20 10:18 -------
No idea where the bug is, but when i use libiconv xine works. Maybe my glibc
libraries are corrupted, but they works for most of programs (except of xine and
samba). Also iconv tool converts codepages well. I have no time to debug xine
and glibc. I found few persons on google
(http://www.google.pl/search?hl=pl&q=+gconv_db.c%3A232%3A&btnG=Szukaj&lr=) who
have the same problem, so  maybe someone else someday will try to resolve this
problem :) The same bug was reported on samba's bugzilla
(https://bugzilla.samba.org/show_bug.cgi?id=3084), but is not fixed till now.

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[Bug libc/2569] utf-16 iconv module breaks programs

[maestromae at kateos dot org]

------- Additional Comments From maestromae at kateos dot org  2006-04-20 11:10 -------
Sorry guys, this is only samba issue. Xine samba plugin is linked with libsmbclient.

Sorry again. 

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[Bug libc/2569] utf-16 iconv module breaks programs

[drepper at redhat dot com]

------- Additional Comments From drepper at redhat dot com  2006-04-24 17:56 -------
*** Bug 2597 has been marked as a duplicate of this bug. ***

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                 CC|                            |thkala at softlab dot ece
                   |                            |dot ntua dot gr


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[Bug libc/2569] utf-16 iconv module breaks programs

[thkala at softlab dot ece dot ntua dot gr]

------- Additional Comments From thkala at softlab dot ece dot ntua dot gr  2006-04-25 11:54 -------
Ah, I managed to reproduce this with something much simpler than samba :-) :

#include <iconv.h>

int main() {
    iconv_t cd0, cd1;
    cd0 = iconv_open("ISO-8859-7", "UTF-16LE");
    cd1 = iconv_open("ISO-8859-7", "UTF-16LE");
    iconv_close(cd0);
    iconv_close(cd1);
    return 0;
}

It seems that opening two identical conversion descriptors is what triggers the
error. Is there any reason why two identical descriptors should not be allowed ?

Therefore I think that this is a glibc bug, after all. Perhaps reopening it is
in order ?

Regards,

Theodoros Kalamatianos


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[Bug libc/2569] utf-16 iconv module breaks programs

[maestromae at kateos dot org]

------- Additional Comments From maestromae at kateos dot org  2006-04-25 12:26 -------
(In reply to comment #7)
> Ah, I managed to reproduce this with something much simpler than samba :-) :
> 
> #include <iconv.h>
> 
> int main() {
>     iconv_t cd0, cd1;
>     cd0 = iconv_open("ISO-8859-7", "UTF-16LE");
>     cd1 = iconv_open("ISO-8859-7", "UTF-16LE");
>     iconv_close(cd0);
>     iconv_close(cd1);
>     return 0;
> }
> 
> It seems that opening two identical conversion descriptors is what triggers the
> error. Is there any reason why two identical descriptors should not be allowed ?
> 
> Therefore I think that this is a glibc bug, after all. Perhaps reopening it is
> in order ?


I confirm that on my system this code reproduces the bug. In my opinion this
code should work, so i will reopen this bug. Correct me if i'm wrong :) 

Regards.

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           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|INVALID                     |


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[Bug libc/2569] utf-16 iconv module breaks programs

[drepper at redhat dot com]

------- Additional Comments From drepper at redhat dot com  2006-04-25 17:23 -------
I cannot reproduce any problem.  Unless you provide detailed reports based on
the *current* sources I'll close the bug again.

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           What    |Removed                     |Added
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             Status|REOPENED                    |WAITING


http://sourceware.org/bugzilla/show_bug.cgi?id=2569

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[Bug libc/2569] utf-16 iconv module breaks programs

[drepper at redhat dot com]

------- Additional Comments From drepper at redhat dot com  2006-04-25 17:25 -------
Actually, I was too quick.  It does fail on one machine.  I'll look at it.

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           What    |Removed                     |Added
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             Status|WAITING                     |ASSIGNED


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[Bug libc/2569] utf-16 iconv module breaks programs

[drepper at redhat dot com]

------- Additional Comments From drepper at redhat dot com  2006-04-25 17:44 -------
This is fixed upstream.  It was only an incomplete condition of an assert.  The
actual code is correct.

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           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


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