compiz crashed with SIGSEGV in af_latin_hints_compute_edges()

[Martin Wildam]

Can't exactly tell how to reproduce.

I have changed compiz scale plugin to initiate window picker in the bottom right and window picker for all windows in the top right corner.

In addition left-clicking or right-clicking on the top edge switches desktop (desktop wall plugin) and I have changed to 3 desktops in one row.

After those tweaks (as well as disabling global menus and adding a gnome menu button) I switched desktops and windows by moving mouse cursor and clicking. Then sometimes this crash occurs while switching windows and desktops but can't exactly tell under what exact circumstances.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: unity 5.8.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-20.32-generic-pae 3.2.12
Uname: Linux 3.2.0-20-generic-pae i686
ApportVersion: 1.95-0ubuntu1
Architecture: i386
Date: Mon Mar 26 23:55:03 2012
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta i386 (20120301)
ProcCmdline: compiz
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvReason: writing NULL VMA
Signal: 11
SourcePackage: unity
Title: compiz crashed with SIGSEGV in FT_Load_Glyph()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 af_latin_hints_compute_edges (hints=<optimized out>, dim=<optimized out>) at /build/buildd/freetype-2.4.8/freetype-2.4.8/src/autofit/aflatin.c:1229
 af_latin_hints_detect_features (dim=AF_DIMENSION_VERT, hints=0x8d12628) at /build/buildd/freetype-2.4.8/freetype-2.4.8/src/autofit/aflatin.c:1344
 af_latin_hints_detect_features (dim=AF_DIMENSION_VERT, hints=0x8d12628) at /build/buildd/freetype-2.4.8/freetype-2.4.8/src/autofit/autofit.c:36
 af_latin_hints_apply (hints=0x8d12628, outline=0x8d12710, metrics=0x9fc0400) at /build/buildd/freetype-2.4.8/freetype-2.4.8/src/autofit/aflatin.c:2257
 af_loader_load_g (loader=0x8d1261c, scaler=0xab28f6cc, glyph_index=42, load_flags=68097, depth=0) at /build/buildd/freetype-2.4.8/freetype-2.4.8/src/autofit/afloader.c:178

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Sebastien Bacher (seb128)]

Thank you for your bug report, that's not an unity bug, there are similar bugs on other components, https://bugzilla.redhat.com/show_bug.cgi?id=761100 is similar and triagers there reassigned from the apps to pango, which seems a guess...

Reassigning to freetype guessing as well since that's where the segfault happens but it could well be due to pango or something else