[Webkit-unassigned] [Bug 249317] New: Fix assertion failure when glyph ID 0 of a font that has a "VORG" table in vertical flow

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=249317

            Bug ID: 249317
           Summary: Fix assertion failure when glyph ID 0 of a font that
                    has a "VORG" table in vertical flow
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Text
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ahmad.saleem792 at gmail.com
                CC: mmaxfield at apple.com

Hi Team,

I don't know whether we have this assertion or not or we have any such test failures but just wanted to raise this and get opinion whether can merge this or not:

Blink Commit - https://src.chromium.org/viewvc/blink?revision=195946&view=revision

Webkit GitHub Source - https://github.com/WebKit/WebKit/blob/492490a51a6c23ab76a9556c49c56ea445903b43/Source/WebCore/platform/graphics/opentype/OpenTypeVerticalData.cpp#L524

Just wanted to raise this bug for opinion only.

Thanks!

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