I suspect this dates from a time when we put the test temp files in . rather than $TMPDIR. It's much less likely that /tmp will be setgid. It's possible you have TMPDIR=~/tmp and you might hit this but it can wait until someone hits it again.
I suspect this dates from a time when we put the test temp files in . rather than $TMPDIR. It's much less likely that /tmp will be setgid. It's possible you have TMPDIR=~/tmp and you might hit this but it can wait until someone hits it again.