fcitx crashed with SIGABRT in __assert_fail_base()

[Sw600369]

I was using libreoffice writer to write something in Chinese with the fcitx-pinyin as input tool. I hit a key, something like the 'n', and I saw there were a dozen of the letter 'n's shown up in the input bar. Then the error notice poped up and here I am. I am on Ubuntu 12.04 LTS beta1.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: fcitx-bin 1:4.2.0-1
ProcVersionSignature: Ubuntu 3.2.0-19.30-generic-pae 3.2.11
Uname: Linux 3.2.0-19-generic-pae i686
ApportVersion: 1.94.1-0ubuntu2
Architecture: i386
Date: Mon Mar 19 13:58:16 2012
ExecutablePath: /usr/bin/fcitx
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta i386 (20120301)
ProcCmdline: /usr/bin/fcitx
ProcEnviron:
 LANGUAGE=zh_CN:zh
 LANG=zh_CN.UTF-8
 SHELL=/bin/bash
Signal: 6
SourcePackage: fcitx
StacktraceTop:
 raise () from /lib/i386-linux-gnu/libc.so.6
 abort () from /lib/i386-linux-gnu/libc.so.6
 ?? () from /lib/i386-linux-gnu/libc.so.6
 __assert_fail () from /lib/i386-linux-gnu/libc.so.6
 ime_pinyin::MatrixSearch::extend_dmi(ime_pinyin::DictExtPara*, ime_pinyin::DictMatchInfo*) () from /usr/lib/i386-linux-gnu/libgooglepinyin.so.0
Title: fcitx crashed with SIGABRT in raise()
UpgradeStatus: Upgraded to precise on 2012-03-17 (1 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 __assert_fail_base (fmt=0xb7737438 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=0xb5c3961f <Address 0xb5c3961f out of bounds>, file=0xb5c393ec <Address 0xb5c393ec out of bounds>, line=1444, function=0xb5c39960 <Address 0xb5c39960 out of bounds>) at assert.c:94
 __GI___assert_fail (assertion=0xb5c3961f <Address 0xb5c3961f out of bounds>, file=0xb5c393ec <Address 0xb5c393ec out of bounds>, line=1444, function=0xb5c39960 <Address 0xb5c39960 out of bounds>) at assert.c:103
 ?? ()