DWARF-2 EH for MinGW gcj?

Sun Nov 26 19:45:00 GMT 2006

Hi Ranjit,
I know this isn't your topic of preference, but
can you give me quick brain dump of what you know
about or some pointers to issues of DWARF-2 EH for
MinGW gcj?
In particular:
- To turn DWARF2 EH back on for MinGW builds, is
it simply a matter of --enable-sjlj-exceptions from
the configure switches? Do I need --with-dwarf2? Or
is there more?
- Is the only issue you know about the foreign stack
frame issue? Or are there other caveats you know about?
- Any ideas or hunches on how to solve this problem?
Anyone else? Unless I'm missing something, it would seem
to me that the only way of having any hope of worming
our way back through foreign stack frames is to save
some state information before each call as we do with
SJLJ exceptions (if I understand this mechanism correctly,
which I don't claim to), which would defeat any performance
gains we'd hope to achieve by doing away with SJLJ exceptions....
-- Mohan
http://www.thisiscool.com/
http://www.animalsong.org/