Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 5c3bc51f9e6a4c5725d11730c73ee73ec179ee2f
https://github.com/WebKit/WebKit/commit/5c3bc51f9e6a4c5725d11730c73ee73ec179ee2f
Author: Vitor Roriz <[email protected]>
Date: 2026-06-16 (Tue, 16 Jun 2026)
Changed paths:
M Source/WebCore/platform/graphics/FontCache.cpp
Log Message:
-----------
FontCache::purgeInactiveFontData: clear shaped text caches when purging fonts
https://bugs.webkit.org/show_bug.cgi?id=317190
rdar://173222307
Reviewed by Brent Fulgham and Tim Nguyen.
GlyphBuffer holds only weak references to its Fonts (since 308842@main). A
GlyphBuffer cached in a FontCascadeFonts shaped text cache therefore does not
keep its Fonts alive, so FontCache::purgeInactiveFontData can destroy a Font
that is still referenced by a cached buffer. Currently,
FontCascadeFonts::pruneSystemFallbacks
only flushes the shaped text caches when system fallback fonts are dropped, so
an
inactive font purge leaves the cached buffer with a dangling weak pointer.
Therefore, let's clear the shaped text caches whenever inactive font data is
purged.
* Source/WebCore/platform/graphics/FontCache.cpp:
(WebCore::FontCache::purgeInactiveFontData):
Canonical link: https://commits.webkit.org/315309@main
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