[Webkit-unassigned] [Bug 46794] Crashes randomly in cairo_scaled_font_destroy

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=46794


Martin Robinson <mrobinson at webkit.org> changed:

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--- Comment #15 from Martin Robinson <mrobinson at webkit.org>  2010-10-25 13:05:39 PST ---
Created an attachment (id=71786)
 --> (https://bugs.webkit.org/attachment.cgi?id=71786&action=review)
WIP patch taking Darin's advice into account

Darin, I've attached a patch for this issue which switches FontPlatformData.m_scaledFont to manual memory management and handles HashTableDeletedValue specifically. 

Some alternatives:
1. Create a RefCountedCairoPtr (similar to RefCountedGDIHandle on Windows), which essentially wraps the raw Cairo pointer in another layer of abstraction.
2. Handle -1 specifically in RefPtrCairo here: https://bugs.webkit.org/show_bug.cgi?id=48192

I hope my previous comment did not come off as too defensive. I appreciate your insight.

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