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List: cairo-bugs
Subject: [cairo-bugs] [Bug 16819] New: Deadlock when initializing user font
From: bugzilla-daemon () freedesktop ! org
Date: 2008-07-23 18:43:22
Message-ID: bug-16819-4039 () http ! bugs ! freedesktop ! org/
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http://bugs.freedesktop.org/show_bug.cgi?id=16819
Summary: Deadlock when initializing user font
Product: cairo
Version: 1.6.5
Platform: x86 (IA32)
OS/Version: Windows (All)
Status: NEW
Severity: normal
Priority: medium
Component: general
AssignedTo: freedesktop@behdad.org
ReportedBy: cyreve@users.sourceforge.net
QAContact: cairo-bugs@cairographics.org
Created an attachment (id=17841)
--> (http://bugs.freedesktop.org/attachment.cgi?id=17841)
Proposed fix
Found in Inkscape.
When opening the SVG Fonts editing pane, Inkscape freezes as soon as a font
name is selected. It turns out that Windows hangs an app on entering a mutex
when that mutex has been exited more times than it has been entered, i.e. the
sequence goes init, enter, exit, exit, enter:deadlock. Patch attached. The fix
is in common code, but I haven't seen any instance of in not being caused by
user fonts, nor have I tried to read the code to see if it could be.
NB: This description sounds a lot like bug 11900, but it can't be because the
offending code was only written in May.
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