segfault in sysdep/i386/backtrace.h

Wed Feb 21 09:43:00 GMT 2007

Danny Smith wrote:
> Reference: http://gcc.gnu.org/ml/java/2007-02/msg00146.html
>> Andrew Haley wrote
>>> It's going to be hard. If you want to use DWARF and you want to
>> unwind through (and throw execptions though) libraries compiled with
>> MSVC then you have to teach gcc how to unwind through Structured
>> Exception Handling blocks. Perhaps there are Windows library calls to
>> do this.
>>>> That part has been done, See attached patch, specifically the
> w32-unwind.h contribution from Pascal Obry. For an example of how it
> could be used see ada/seh_init.c.
>> Note this patch was extracted from a much larger local patchset.
> I haven't tested independently of the other bits. 
>> The part that hasn't been done is the ability to unwind from callback
> functions passed to win32api functions. Such callbacks are common in
> windows GUI world. mingw users -- at least those who have expressed an
> opinion -- want them to work in C++. SJLJ works. DW2 does not and will
> not until we can convince MS (or ReactOS) to compile the w32api with DW2
> tables. 

So what is the overall state of DW EH for mingw? Is it done? Is it 
nearly done? Is it far from working?
thanks
Marco