[Webkit-unassigned] [Bug 222302] New: Add Options::hangOnVerifyGCError() debugging utility.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=222302

            Bug ID: 222302
           Summary: Add Options::hangOnVerifyGCError() debugging utility.
           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: mark.lam at apple.com

Sometimes, verifyGC errors are intermittent and it takes many runs of the jsc shell to reproduce.  A --hangOnVerifyGCError=true option will allow the shell to hang after it dumps its verifyGC error message instead of crashing.  With this, we can now run 1000s of iterations of invoking the jsc shell to reproduce the error, and it will hang if it finds the error, thereby allowing us to attach lldb later to do some data inspection.

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