Bug 253547

Summary: The 'length' argument of U16_FWD_1 in TextUtil::breakWord is wrong
Product: WebKit Reporter: Fujii Hironori <Hironori.Fujii>
Component: Layout and RenderingAssignee: Fujii Hironori <Hironori.Fujii>
Status: RESOLVED FIXED    
Severity: Normal CC: bfulgham, simon.fraser, webkit-bug-importer, zalan
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
WIP patch none

Description Fujii Hironori 2023-03-07 17:06:38 PST 
The 'length' argument of U16_FWD_1 in TextUtil::breakWord is wrong

If I applied bug#215318 patch, fast/text/midword-break-before-surrogate-pair.html is failing as assertion failure for WinCairo debug, and it is failing as infinite loop for WinCairo release.

> ASSERTION FAILED: middle >= left && middle < right
> C:\home\webkit\gc\Source\WebCore\layout/formattingContexts/inline/text/TextUtil.cpp(276) : WebCore::Layout::TextUtil::breakWord::<lambda_1>::operator ()
Comment 1 Fujii Hironori 2023-03-07 17:08:06 PST 
Created attachment 465349 [details]
WIP patch
Comment 2 Fujii Hironori 2023-03-08 19:30:42 PST 
Pull request: https://github.com/WebKit/WebKit/pull/11271
Comment 3 EWS 2023-03-08 22:33:29 PST 
Committed 261406@main (b625b7e2bbd3): <https://commits.webkit.org/261406@main>

Reviewed commits have been landed. Closing PR #11271 and removing active labels.
Comment 4 Radar WebKit Bug Importer 2023-03-08 22:34:16 PST 
<rdar://problem/106484626>