gcc 4.x for Cygwin?

[Charles Wilson]

Dave Korn wrote:

>   Option 2.  I don't see there's any other sensible choice.  Ultimately I
> guess I'd like to figure out a way to make unwinding and exceptions interwork
> with the native SEH to address the potential downside.

(1) There was supposed to be a Google Summer of Code project addressing 
SEH in gcc. It was listed as an "accepted project" here:
     http://gcc.gnu.org/wiki/SummerOfCode
But nothing seems to have actually happened, to judge by
     http://code.google.com/soc/2007/gcc/about.html

(2) Curious: does using a -dw2 compiler work when linking against code 
that was compiled using an sjlj compiler?  e.g. in a static library or 
in a shared library?

Like cygwin1.dll?

Or, because cygwin1.dll exposes a very C-ish (not C++-ish) interface, 
then what about other C++ libraries, such as xerces or ncurses++?

If the answers to the questions above are "bad", then is the (official, 
non-experimental) release of a gcc-4.x-dw2 compiler something that 
should wait until cygwin-1.7, with all of the backward-incompatibility 
he** implied by "bad" answers?

--
Chuck

P.S. sorry for the delay in responding. I've been effectively offline 
for several weeks (work+family).