Reject missing database name in pg_regress and cohorts.
commitd5515ca7cf1b095fab65c93710c71fece5baf67e
authorTom Lane <tgl@sss.pgh.pa.us>
Wed, 30 Nov 2022 18:01:41 +0000 (30 13:01 -0500)
committerTom Lane <tgl@sss.pgh.pa.us>
Wed, 30 Nov 2022 18:01:41 +0000 (30 13:01 -0500)
treec8d853faa4d359b918dd2fad610c2f7a5e1273b1
parent8f2e74bf87e8c60c4984924caa67b723c51e0a6e
Reject missing database name in pg_regress and cohorts.

Writing "pg_regress --dbname= ..." led to a crash, because
we weren't expecting there to be no database name supplied.
It doesn't seem like a great idea to run regression tests
in whatever is the user's default database; so rather than
supporting this case let's explicitly reject it.

Per report from Xing Guo.  Back-patch to all supported
branches.

Discussion: https://postgr.es/m/CACpMh+A8cRvtvtOWVAZsCM1DU81GK4DL26R83y6ugZ1osV=ifA@mail.gmail.com
src/test/regress/pg_regress.c