bug#55212: GNU Linux "sort -g" can hang indefinitely when run on standard input if NaNs are involved

[Paul Eggert]

On 5/2/22 06:31, Pádraig Brady wrote:
> This is a bit slower of course, but since an edge case not a big concern:

Yes, my thoughts too. There are ways to speed up common lots-o-NaN cases 
portably (I toyed with the idea of using ieee754.h), but I went with the 
simple approach for now.

A nit: 'time' needs to be at the end of the pipeline:

$ yes nan | head -n128095 | bash -c 'time src/sort -g' >/dev/null

real    0m0.552s
user    0m0.551s
sys     0m0.001s
$ yes nan | head -n128095 | bash -c 'time sort -g' >/dev/null

real    0m0.392s
user    0m0.382s
sys     0m0.009s
512-day $ yes nan | head -n128095 | bash -c 'time sort -g' >/dev/null
[Here I had to control-C since 'sort' inflooped.]