Robert Black <r.black@ic.ac.uk> writes:

>One way might be to guard the declaration with a
>
>#ifndef BROKEN_SYS_ERRLIST
>
>This might be slightly more palettable when porting a million+ lines of badly
>written code 

Underscores. Underscores. Remember the ANSI C namespace rules.

It would be deeply ironic if a change like this *broke* software that
tries to deal with errlist and uses the same token as suggested above.