[Webkit-unassigned] [Bug 145522] New: Track exception values and stack trace together in an Exception object

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=145522

            Bug ID: 145522
           Summary: Track exception values and stack trace together in an
                    Exception object
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (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

We currently track exceptions as 2 values in the VM: m_exception (the thrown JSValue) and m_exceptionStack (a capture of the stack trace at the time of throw).  This increases the complexity of having to keep the 2 values in sync every time we throw, clear, stash away, and restore exceptions.  We should introduce an Exception object to better encapsulate all the state pertaining to an exception throwing event.

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