ibus-daemon crashed with SIGSEGV in __find_specmb()

Curious error suddenly appearing, with no apparent effect on the program I was using (Firefox, Texmaker, Terminal and Nautilus).

ProblemType: Crash
DistroRelease: Ubuntu 13.10
Package: ibus 1.5.3-6ubuntu2
ProcVersionSignature: Ubuntu 3.11.0-11.17-generic 3.11.3
Uname: Linux 3.11.0-11-generic x86_64
ApportVersion: 2.12.5-0ubuntu1
Architecture: amd64
Date: Mon Oct 7 18:26:06 2013
ExecutablePath: /usr/bin/ibus-daemon
InstallationDate: Installed on 2013-07-18 (80 days ago)
InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130213)
MarkForUpload: True
ProcCmdline: /usr/bin/ibus-daemon --replace --xim --panel disable
ProcEnviron:
 SHELL=/bin/bash
 XDG_RUNTIME_DIR=<set>
 PATH=(custom, no user)
 LANGUAGE=fr_FR
 LANG=fr_FR.UTF-8
SegvAnalysis:
 Segfault happened at: 0x7f4eede1581a <_IO_vfprintf_internal+154>: callq 0x7f4eede5fb20 <strchrnul>
 PC (0x7f4eede1581a) ok
 source "0x7f4eede5fb20" (0x7f4eede5fb20) ok
 destination "(%rsp)" (0x7f4eeb394f50) in non-writable VMA region: 0x7f4eeb394000-0x7f4eeb395000 ---p None
 Stack memory exhausted (SP below stack segment)
SegvReason: writing VMA None
Signal: 11
SourcePackage: ibus
StacktraceTop:
 __find_specmb (format=0x7f4eeec6ae68 "(%s)") at printf-parse.h:109
 _IO_vfprintf_internal (s=s@entry=0x7f4eeb3955a0, format=format@entry=0x7f4eeec6ae68 "(%s)", ap=ap@entry=0x7f4eeb395708) at vfprintf.c:1326
 __GI___vasprintf_chk (result_ptr=0x7f4eeb3956e8, flags=1, format=0x7f4eeec6ae68 "(%s)", args=0x7f4eeb395708) at vasprintf_chk.c:66
 g_vasprintf () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_strdup_vprintf () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
Title: ibus-daemon crashed with SIGSEGV in __find_specmb()
UpgradeStatus: Upgraded to saucy on 2013-07-29 (69 days ago)
UserGroups: adm cdrom dip kvm lpadmin plugdev sambashare sudo