Overflow issue during multiplication of negative wide_integers

[nilskohl]

John,

for some reason I sometimes get overflow issues when multiplying two wide_integers.
It may be related to the signs of the factors. The number of digits should be sufficient to
represent the factors as well as the product.

Example here:

https://godbolt.org/z/3bh6zsz9M

Tested with 06c06cd

Let me know if I am missing something.

Cheers,
Nils

[johnmcfarlane]

Hi Nils. That looks like a bug. It should be addressed by #892 which is ongoing.