On 8 Feb 2009, at 06:39, Richard Frith-Macdonald wrote:
On 8 Feb 2009, at 04:06, Gregory Casamento wrote:
Here is the promised patch. Please take a look and give any
feedback you can.
This is simply a patch to allow the user to set whether or not they
want to debug exceptions or not. The default is NO at present so
the exceptions will simply be logged as they are in Cocoa.
I am going to go ahead and commit this change fairly soon (probably
early tomorrow morning) after I do more testing. If it causes
problems for anyone then we can revert it. I know this goes a bit
against what I said earlier (about sending a patch), but I would
like to get this in very soon and it's easier for people to examine
if it's in the repository.
1. The changes to the uncaught exception handler ... as far as I can
see the effect of this would be to just cause an app to log the
exception and abort (assuming it falls back to the default uncaught
exception handler, or randomly crash if that doesn't work ... you
can't recover from an uncaught exception, so changing the code to
remove 'abort()' won't let the app recover. I would guess that the
existing behavior might be preferable to this.
Actually, I take it back ... maybe we can recover from an uncaught
exception.
Problem is ... if we are using native exceptions ... by the time the
uncaught handler is called we have unwound the stack entirely and the
program has no way to continue running. But maybe the native handling
code can actually cope with that (or be changed to do that).
Not sure where the stack pointer and program counter end up if we are
using old-fashioned exceptions.
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