Re: Exception handling and Windows

[Armin Burgmeier <armin arbur net>]

On Fri, 2011-08-05 at 12:52 +0200, Andre Colomb wrote:
> Yoann Le Montagner wrote:
> > I've managed to get around my problem by building the gtkmm libraries by
> > myself, with the latest version of the MinGW compiler.
> 
> That's exactly what I did a while back. One problem is the default
> exception handling ABI in GCC, which changed from SJLJ to DW2 recently.
> You can look for a libgcc*.dll in the Gtkmm binaries and compare with
> the one in your MinGW build system. Newer MinGW versions ship
> libgcc_s_dw2-1.dll, so you might end up dynamically linking to two
> different libgcc DLLs.
> 
> See also: http://gcc.gnu.org/wiki/WindowsGCCImprovements
> 
> Another problem seems to be exceptions thrown in callback functions.
> Since signal handlers are actually called from the Gtk C libraries, C++
> exceptions are hard to get handed through these to e.g. the main
> routine. There is a comment about this somewhere in the Gtkmm
> documentation, just couldn't find a reference right now: "Always catch
> your exceptions locally within the signal callback."

Exceptions from callback functions are catched by glibmm in order to
avoid passing them through the C libraries.

Armin