[Webkit-unassigned] [Bug 232043] New: Regression: Safari Tab Crashing on iOS 15.0 when Japanese text is drawn onto a Canvas with -apple-system font
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Wed Oct 20 14:14:00 PDT 2021
https://bugs.webkit.org/show_bug.cgi?id=232043
Bug ID: 232043
Summary: Regression: Safari Tab Crashing on iOS 15.0 when
Japanese text is drawn onto a Canvas with
-apple-system font
Product: WebKit
Version: Other
Hardware: iPhone / iPad
OS: Other
Status: NEW
Severity: Major
Priority: P2
Component: Canvas
Assignee: webkit-unassigned at lists.webkit.org
Reporter: jjorgenson at evernote.com
CC: dino at apple.com
Minimum Repro: https://codepen.io/jessejorgenson/full/abymLLX and https://codepen.io/jessejorgenson/pen/abymLLX
When drawing text onto a Canvas via context.fillText, Safari on iOS 15 is crashing if that text is Japanese and you use `-apple-system` in your font list. If you remove `-apple-system` or the Japanese characters, the crash stops.
Notes
* I can reproduce this in both the simulator with iOS 15.0 and physical iPad with iPadOS 15.0
* We cannot reproduce this on iOS 14 and below
* I also saw the crash when using `system-ui` in the font list
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