Re: Use of `mktemp' is dangerous, better use `mkstemp'...

[Chet Ramey]

On 1/15/21 4:00 PM, Ángel wrote:
> On 2021-01-15 at 10:00 -0500, Chet Ramey wrote:
> > On 1/14/21 11:45 PM, Jeffrey Walton wrote:
> > > Hi Everyone,
> > >
> > > I'm building Bash 5.1 from sources. This may be of interest:
> > >
> > > /usr/bin/ld: ./lib/sh/libsh.a(tmpfile.o): in function
> > > `sh_mktmpname':
> > > /home/jwalton/Build-Scripts/bash-5.1/lib/sh/tmpfile.c:160: warning:
> > > the use of `mktemp' is dangerous, better use `mkstemp' or `mkdtemp'
> >
> > It's a spurious warning.
>
> mktemp() would only end up being used (with all its issues) if the OS
> doesn't provide a DEV FD or there's no mkdtemp(). In other (safe)
> Operating Systems, it would be possible to avoid the warning by
> building a slightly different libsh.a in such case.

The warning can be ignored.

--
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/