203127 2019-10-17 16:54:50 -0700 ctx.font = "" asserts in CSS parser 2019-10-17 17:44:14 -0700 1 1 1 Unclassified WebKit Canvas WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 dino dino cdumez dino esprehn+autocc ews-watchlist gyuyoung.kim hi webkit-bug-importer oldest_to_newest 1581224 0 dino 2019-10-17 16:54:50 -0700 ctx.font = "" asserts in CSS parser 1581225 1 webkit-bug-importer 2019-10-17 16:55:29 -0700 <rdar://problem/56391016> 1581227 2 381252 dino 2019-10-17 16:59:48 -0700 Created attachment 381252 Patch 1581235 3 381252 hi 2019-10-17 17:14:42 -0700 Comment on attachment 381252 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=381252&action=review r=me > Source/WebCore/ChangeLog:13 > + will assert. This was the only case I could find where we sidestepped > + most of the parsing infrastructure and injected a raw string. For the record (which I think is what you were referring to), there are a number of other places where we call `CSSParser::parseValue`, and most of them already do a check for an empty string before calling it, but not all of them. The only other one I could is `CSSFontFaceSet::matchingFacesExcludingPreinstalledFonts` (which looks to be reachable from JavaScript via `FontFaceSet.prototype.check`), so perhaps we should add a similar check there as well. > LayoutTests/http/wpt/2dcontext/text-styles/2d.text.font.parse.invalid.html:21 > +ctx.font = '20px serif'; I realize this is a WPT, but should we have a test to check that setting a valid value after an invalid one does in fact change the `font`, just to make sure that an invalid value doesn't "permanently" mess everything up? ``` ctx.font = '20px serif'; ctx.font = 'invalid'; ctx.font = '10px sans-serif'; _assertSame(ctx.font, '10px sans-serif', "ctx.font", "'10px sans-serif'"); ``` 1581239 4 381252 dino 2019-10-17 17:25:56 -0700 Comment on attachment 381252 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=381252&action=review >> LayoutTests/http/wpt/2dcontext/text-styles/2d.text.font.parse.invalid.html:21 >> +ctx.font = '20px serif'; > > I realize this is a WPT, but should we have a test to check that setting a valid value after an invalid one does in fact change the `font`, just to make sure that an invalid value doesn't "permanently" mess everything up? > ``` > ctx.font = '20px serif'; > ctx.font = 'invalid'; > ctx.font = '10px sans-serif'; > _assertSame(ctx.font, '10px sans-serif', "ctx.font", "'10px sans-serif'"); > ``` We probably should. Feel free to make a WPT request :) 1581240 5 dino 2019-10-17 17:26:12 -0700 Will do FontFaceSet separately. 1581244 6 dino 2019-10-17 17:44:14 -0700 Committed r251270: <https://trac.webkit.org/changeset/251270> 381252 2019-10-17 16:59:48 -0700 2019-10-17 17:14:42 -0700 Patch bug-203127-20191018105947.patch text/plain 14227 dino U3VidmVyc2lvbiBSZXZpc2lvbjogMjUxMjUwCmRpZmYgLS1naXQgYS9Tb3VyY2UvV2ViQ29yZS9D aGFuZ2VMb2cgYi9Tb3VyY2UvV2ViQ29yZS9DaGFuZ2VMb2cKaW5kZXggNzI5YjAxZWY1MGI4OWM2 YjY3N2ZkYWU5Y2I5NTg4NzFmYTJlOGU0Yi4uZGQxNDFjZmNiMTRiODM1YzNmNWYxOTRjMjdhNmU5 MGU4MTRmYjIyOCAxMDA2NDQKLS0tIGEvU291cmNlL1dlYkNvcmUvQ2hhbmdlTG9nCisrKyBiL1Nv dXJjZS9XZWJDb3JlL0NoYW5nZUxvZwpAQCAtMSwzICsxLDIyIEBACisyMDE5LTEwLTE3ICBEZWFu IEphY2tzb24gIDxkaW5vQGFwcGxlLmNvbT4KKworICAgICAgICBjdHguZm9udCA9ICIiIGFzc2Vy dHMgaW4gQ1NTIHBhcnNlcgorICAgICAgICBodHRwczovL2J1Z3Mud2Via2l0Lm9yZy9zaG93X2J1 Zy5jZ2k/aWQ9MjAzMTI3CisgICAgICAgIDxyZGFyOi8vcHJvYmxlbS81NjM5MTAxNj4KKworICAg 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