[Bug 30465] BridgeCentral: Invalid floating point operation in mozjs.dll (fldcw in JSDOUBLE_IS_INT32)

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=30465

--- Comment #3 from Ulrik Dickow <u.dickow at gmail.com> 2012-04-17 05:51:03 CDT ---
Created attachment 39834
  --> http://bugs.winehq.org/attachment.cgi?id=39834
Wine 1.5.1 detailed debug session with Gecko source

Here Gecko source has been installed (wine-gecko-1.5 tag in git).

We see that the JavaScript triggering the bug is the history expiration code in
nsPlacesExpiration.js.  It explains why the crash usually happens after 9
minutes, since this is the time before the idle timer will trigger the
expiration logic.

However, there's nothing wrong with that JavaScript (related to the bug).  The
bug is either that JSDOUBLE_IS_INT32 is too careless about generating invalid
operation exceptions, or that it isn't properly ensured that these exceptions
are masked out when it runs -- and cleared before anyone unmasks the exception.
 Well, there are many ways to fix or avoid the problem.  More on that in my
next attachments.

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