Re: Does gnulib getcwd always allocate if buf is NULL?

[Paul Smith]

On Wed, 2024-03-06 at 19:55 +0100, Reuben Thomas wrote:
> In getcwd.c I find the following comment:
> 
> > In GNU, if BUF is NULL, an array is allocated with 'malloc'; the
> > array is SIZE bytes long, unless SIZE == 0, in which case it is as
> > big as necessary.
> 
> However, as far as I can see from the code, it always allocates if
> BUF is NULL.

I don't think your observation contradicts the comment...is there more
to it?

Note the use of a semicolon here which means that the second clause is
"separate from" the first clause; this could be rewritten as something
like:

   In GNU, if BUF is NULL, an array is allocated with 'malloc'.

   If allocated, the allocated array is SIZE bytes long, unless SIZE ==
   0, in which case it is as big as necessary.