nautilus crashed with signal 7 in pango_shape()

[Xavier Fung]

Nautilus was frozen after updating an existing font.

Steps:
1) Copy the TTF font file to /usr/share/fonts/truetype/<an additional folder/ using sudo in Terminal
2) Force update of the font cache (sudo fc-cache -vf)
3) The opened Nautilus window would freeze and then Apport comes up for the crash

Expected behavior:
Nautilus should not crash upon a manual font update/or a force update of font cache.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: nautilus 1:3.3.90-0ubuntu6
ProcVersionSignature: Ubuntu 3.2.0-17.27-generic 3.2.6
Uname: Linux 3.2.0-17-generic x86_64
ApportVersion: 1.94-0ubuntu1
Architecture: amd64
Date: Mon Mar 5 12:19:41 2012
ExecutablePath: /usr/bin/nautilus
GsettingsChanges:
 org.gnome.nautilus.window-state geometry '960x970+148+27'
 org.gnome.nautilus.window-state maximized true
 org.gnome.nautilus.window-state sidebar-width 173
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
ProcCmdline: nautilus
ProcEnviron:
 LANGUAGE=en_HK:en
 PATH=(custom, no user)
 LANG=en_HK.UTF-8
 SHELL=/bin/bash
Signal: 7
SourcePackage: nautilus
StacktraceTop:
 ?? () from /usr/lib/x86_64-linux-gnu/libpangoft2-1.0.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libpangoft2-1.0.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/pango/1.6.0/modules/pango-basic-fc.so
 pango_shape () from /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0
Title: nautilus crashed with signal 7 in pango_shape()
UpgradeStatus: Upgraded to precise on 2011-08-26 (192 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare vboxusers

[Apport retracing service (apport)]

StacktraceTop:
 operator uint16_t (this=0x7f00b88d459f) at /build/buildd/pango1.0-1.29.5/./pango/opentype/hb-open-type-private.hh:373
 operator[] (this=0x7f00b88d459f, i=6151) at /build/buildd/pango1.0-1.29.5/./pango/opentype/hb-open-type-private.hh:585
 get_lookup (i=6151, this=<optimized out>) at /build/buildd/pango1.0-1.29.5/./pango/opentype/hb-ot-layout-gsubgpos-private.hh:934
 get_lookup (i=6151, this=<optimized out>) at /build/buildd/pango1.0-1.29.5/./pango/opentype/hb-ot-layout-gpos-private.hh:1558
 position_lookup (mask=65535, lookup_index=6151, buffer=0x1afcff0, context=0x7fffa790bcc0, this=<optimized out>) at /build/buildd/pango1.0-1.29.5/./pango/opentype/hb-ot-layout-gpos-private.hh:1564