What exactly did you recompile? This is a function in PHP (php_iconv_string) calling the iconv function in your C library, where the thread is actually dying. This looks like it's between between PHP and your C library.

If we google "php_iconv_string", the very first hit is this:

http://bugs.php.net/bug.php?id=53005  ("iconv() fails in ext/iconv/iconv.c php_iconv_string").

Hey look, it's a PHP bug in the CLOSED state, about the same crash that you are having.

And, oh look, it's logged agains the Solaris 10 platform.

What are the odds that it's the same?

The guy who submitted the bug (php at jrdtech dot com) seems to have also found the solution. See his follow-up comment at the bottom:

   "needed to do preload, runs great"

On Tue, 12 Oct 2010 15:55:40 -0700 (PDT), El Reggae Dancer <reggaedancer@ymail.com> wrote:

Hello Alec,

I've reinstalled the iconv , I've compiled iconv from GNU.
but the PHP still crashed and create a core dump.
after simple PHP script.

In my php.ini I have no extension=iconv.so
I just have
[iconv]

;xxx
;xxx

so all iconv commented

so, how to disable the iconv support in PHP ?
AFAIK, iconv is compiled by default in PHP.

May be I should send my question to PHP users, it seems, this is not a Roundcube issue
but PHP issue.
Anyway, thank you for your help.

Dancer.

---

From: A.L.E.C
To: users@lists.roundcube.net
Sent: Tue, October 12, 2010 9:06:38 AM
Subject: Re: [RCU] Roundcube/Apache crashing

On 11.10.2010 21:38, El Reggae Dancer wrote:

> (gdb) bt
> #0  0xec835356 in ?? ()
> #1  0xfec311ea in iconv () from /usr/lib/libc.so.1
> #2  0xfd1de6ac in php_iconv_string (in_p=0x87aec8c "", in_len=0, out=0x80468c4,
> out_len=0x80468c0, out_charset=0x8710858 "//IGNORE",
>    in_charset=0x8775e70 "") at /opt/src/php-5.3.3/ext/iconv/iconv.c:521

It looks like it crashes on iconv (in include/main.inc: "iconv('',
$iconv_options, '')"). So, try to reinstall iconv/php. Finally you can
disable iconv extension in php.ini, in this case Roundcube will use
mbstring extension or other build-in methods.

--
Aleksander 'A.L.E.C' Machniak http://alec.pl gg:2275252
LAN Management System Developer http://lms.org.pl
Roundcube Webmail Developer http://roundcube.net
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