Because long is 32bit on Windows (like int), the
conversion from long to unsigned int was subject
to sign overflow. This was fixed by going to
unsigned int via unsigned long.
Reimplementing virtual functions with
"const &" arguments wasn't behaving as
expected because these arguments were
copied.
Now, "const &" for arguments (in virtual
function reimplementation) is not implemented
as a copy.
In addition, now it's possible to declare
results as references always (also if const &).
See gsiTest.cc:1078 for example:
// gsi::arg_make_reference makes the function's return value
// always being taken as a reference
gsi::method<C_P, const CopyDetector &, const CopyDetector &, gsi::arg_make_reference> ("pass_cd_cref_as_ref", &C_P::pass_cd_cref)