possible bug in mpz_cmp_d

[Tom Tromey]

>>>>> "Niels" == Niels Möller <nisse at lysator.liu.se> writes:

Niels> May I suggest that you consider using mini-gmp as a fallback, to be able
Niels> to always build emacs with half-reasonable bignum support, without making the
Niels> real gmp a mandatory dependency? See
Niels> https://gmplib.org/repo/gmp/file/tip/mini-gmp/README.

Yes, thanks.  Actually I did this already :-)

Tom