[Webkit-unassigned] [Bug 202041] New: Failure in regexp interpretation

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=202041

            Bug ID: 202041
           Summary: Failure in regexp interpretation
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: pmatos at igalia.com

Since the fix for https://bugs.webkit.org/show_bug.cgi?id=201647 (whose report I don't have permissions to read), that we noticed the test stress/regexp-unicode-surrogate-pair-increment-should-involve-length-check.js (added with the mentioned fix) started failing on 32bits ARM.

Turns out this is because we don't have YARR JIT enabled and it's not specific to 32bits. If I disable YARR JIT on 64bits, I can reproduce the same failure in other archs.

$ WebKitBuild/Debug/bin/jsc --useRegExpJIT=0 JSTests/stress/regexp-unicode-surrogate-pair-increment-should-involve-length-check.js
null
Exception: Expected /([^x]+)[^]*\1([^])/u to match "���" but it didn't

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