G++, C++ Exception handling, and cygwin

[Constantine Sapuntzakis]

The libgcc.a that is distributed with cygwin gcc-2.95.3-4 only supports
single threaded C++ exception handling. The library has exception routines
that use static variables.

When I  substitute a version of libgcc.a that includes the code in
gcc/gthr-win32.h, multi-threaded
C++ apps with exception handling seem to work (we've been running them for a
couple months
now).

Given that the code seems to be there to do this correctly, why is it not
enabled?

Thanks,
Costa