Bug 312167

Summary:	FontFace: Reject with SyntaxError when immediate buffer source fails to parse
Product:	WebKit	Reporter:	Vitor Roriz <vitor.roriz>
Component:	Text	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	fantasai.bugs, vitor.roriz, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Vitor Roriz

Reported 2026-04-13 10:24:26 PDT

Per the CSS Font Loading spec, when a FontFace is constructed from a BufferSource and the data fails to parse, the loaded promise should reject with SyntaxError instead of NetworkError. NetworkError is reserved for URL-based fetch failures.

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Radar WebKit Bug Importer

Comment 1 2026-04-13 10:24:34 PDT

<rdar://problem/174669738>

Vitor Roriz

Comment 2 2026-04-13 10:38:03 PDT

Pull request: https://github.com/WebKit/WebKit/pull/62645

EWS

Comment 3 2026-04-13 16:30:49 PDT

Committed 311146@main (3afc1f7690c9): <https://commits.webkit.org/311146@main> Reviewed commits have been landed. Closing PR #62645 and removing active labels.

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