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

[Andrew Cagney]

New commits:
commit 29ed07a5a48ce9594dc36b9044f23686290889f4
Author: Andrew Cagney <cagney at gnu.org>
Date:   Thu Aug 23 22:38:43 2018 -0400

    testing: check for signs of printf("%s", NULL) in test output
    
    Flag as an error.  For want of anything better, use %NULL as the
    abbreviation.