[Webkit-unassigned] [Bug 121108] Web Inspector gets paused twice when there is an exception in host function

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=121108

--- Comment #10 from Peter Wang <PeterHWang at 163.com> ---
Hi Joseph and Mark, the new patch has been uploaded. 

There 3 modifications included:
(1) Change the Layout test case, since the new implementation (SHA 4cbc701b) of "Array.prototype.map" can workaround this bug.
(2) Correct the coding problem of the old patch.
(3) Take a missed case into consideration: when VM is unwinding CallFrames it will clear the exception temporarily.

The root cause of this bug is that the exception, thrown form the JS callback of host function, will be handled twice. So if the 'Debugger::m_currentException' can save the real state of exception of VM, we can use it to justify if it's a same exception triggering the debugger in second time.

Please help to review, thank you very much.

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