Re: [PATCH 2/3] getpwuid(mingw): provide a better default for the user name

> On Tue, Oct 16, 2018 at 8:38 AM Johannes Schindelin
> <Johannes.Schindelin@gmx.de> wrote:
> > On Mon, 15 Oct 2018, Eric Sunshine wrote:
> > > On Mon, Oct 15, 2018 at 5:47 AM Johannes Schindelin via GitGitGadget
> > > <gitgitgadget@gmail.com> wrote:
> > > > +       len = ARRAY_SIZE(wbuffer);
> > > > +       if (GetUserNameExW(type, wbuffer, &len)) {
> > > > +               char *converted = xmalloc((len *= 3));
> >
> > Oh wow. I *just* realized this. It is an off-by-one: the `xmalloc()` call
> > needs to receive `len + 1` to accommodate for the trailing NUL. Will fix,
> > too.
> 
> Or, xmallocz() (note the "z") which gives you overflow-checking of the
> +1 for free.