regcomp.c	These tests have been moved to t/re/reg_mesg.t
		except for those that explicitly test line numbers.

__END__
use warnings 'regexp';
$r=qr/(??{ q"\\b+" })/;
"a" =~ /a$r/; # warning should come from this line
EXPECT
\b+ matches null string many times in regex; marked by <-- HERE in m/\b+ <-- HERE / at - line 3.