[Webkit-unassigned] [Bug 155169] New: synthesizePrototype() and friends need to be followed by exception checks (or equivalent).

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=155169

            Bug ID: 155169
           Summary: synthesizePrototype() and friends need to be followed
                    by exception checks (or equivalent).
    Classification: Unclassified
           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

Failure to do so can result in the new exceptions being thrown (and thereby obscuring) an existing exception that has been thrown but not handled yet.  It may also mean that the VM will continue running on potentially unstable state, and may have undesirable consequences.

I first observed this in some failed assertion while running tests on a patch for https://bugs.webkit.org/show_bug.cgi?id=154865.

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