[Swan-commit] Changes to ref refs/heads/main

[Andrew Cagney]

New commits:
commit a1918a41cc488081132d92a5a1021496a08474e2
Author: Andrew Cagney <cagney at gnu.org>
Date:   Fri Jul 9 09:50:10 2021 -0400

    testing: add DIAG_FAIL(), grrr