[Webkit-unassigned] [Bug 175903] New: REGRESSION (r221052): DumpRenderTree crashed in com.apple.JavaScriptCore: JSC::Yarr::YarrCodeBlock::execute + 137

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=175903

            Bug ID: 175903
           Summary: REGRESSION (r221052): DumpRenderTree crashed in
                    com.apple.JavaScriptCore:
                    JSC::Yarr::YarrCodeBlock::execute + 137
           Product: WebKit
           Version: Other
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: msaboff at apple.com

Crashing in code generated by generateCharacterClassGreedy() with something like "a\u{10410}\u{10410}b".match(/a(\u{10410}*)bc|a(\u{10410}*)b/ui).

Looks like we increment "count" before checking is we are at the end of the string.

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