On Sun, Mar 22, 2020 at 3:18 PM Paul Eggert <egg...@cs.ucla.edu> wrote: > > On 3/22/20 10:17 AM, Jeffrey Walton wrote: > > > According to the Autoconf manual, commands like 'chmod +x' should be > > avoided in favor of 'chmod a+x'. I believe the same applies to 'chmod > > -w' and friends. Also see > > https://www.gnu.org/software/autoconf/manual/autoconf-2.69/html_node/Limitations-of-Usual-Tools.html. > > > > It looks like there are some of the earlier in the gnulib sources: > > Those uses look safe to me. Either they're 'chmod +a' which is a macOS > extension > and so the Autoconf advice doesn't apply, or they're 'chmod +x' on a newly > created file which is safe unless someone has a purposely-harmful and > unsupported umask like 0777 which will break 'configure' in countless other > ways.
If that's true, then it sounds like the manual is wrong and the manual should be updated. Jeff
