Re: [PATCH] xstrtol: ensure errno is reset

[Paul Eggert]

Pádraig Brady wrote:
> +2014-12-30  Pádraig Brady<address@hidden>
> +
> +       xstrtol: ensure errno is reset
> +       Since commit 3bf75404, on 26-09-1998, errno may not have been reset.
> +       Noticed with a spurious coreutils test failure on Darwin 14.0.0.

Sorry, can you explain more?  First, why does xstrtol's caller care about errno 
-- isn't that a bug?  Second, can't isspace set errno and won't this cause problems?