Re: read-file

[Simon Josefsson]

address@hidden (Larry Jones) writes:

> Aaron Stone writes:
>> 
>> If I were using a function like this, I'd expect NULL on error (and
>> errno set according to fopen), and an empty string if the file is empty.
>
> Note that the C Standard doesn't require fopen to set errno and
> traditional implementations didn't, at least in some cases.

The docstring intentionally avoids saying that errno is set to
something useful:

   *LENGTH.  On errors, *LENGTH is undefined, errno preserves the
   values set by system functions (if any), and NULL is returned. */

I guess it could explicitly set errno, but I'm not sure that is such a
good style either...