[Webkit-unassigned] [Bug 172256] New: It should be a runtime error to call ExceptionOr::releaseReturnValue() more than once

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=172256

            Bug ID: 172256
           Summary: It should be a runtime error to call
                    ExceptionOr::releaseReturnValue() more than once
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: aestes at apple.com

Bug #172253 was caused by accidentally calling releaseReturnValue() twice on the same ExceptionOr value. This is a mistake because releaseReturnValue() moves the return value. We should ASSERT that releaseReturnValue() hasn't been called more than once.

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