tree 0858c35e3444c521b3af18ae6aa6124ef908dd66
parent 4c14b76131ea65c797ef98fa94bcccd820e06759
author cdumez@apple.com <cdumez@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc> 1582908428 +0000
committer cdumez@apple.com <cdumez@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc> 1582908428 +0000

Retain cycle between CSSFontSelector -> CSSFontFaceSet -> CSSFontFace -> CSSFontSelector
https://bugs.webkit.org/show_bug.cgi?id=196437
<rdar://problem/46598332>

Reviewed by Alex Christensen.

Break the reference cycle using a WeakPtr. The leak was reproducible by browsing CNN.com
and then navigating to about:blank (those objects would stay around, even after memory
pressure signal).

* css/CSSFontFace.cpp:
(WebCore::CSSFontFace::CSSFontFace):
(WebCore::CSSFontFace::fontLoadEventOccurred):
* css/CSSFontFace.h:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@257639 268f45cc-cd09-0410-ab3c-d52691b4dbfc