C:\temp>perl -MO=Deparse tmp16.pl
Useless use of private variable in void context at tmp16.pl line 6.
use warnings;
use strict 'refs';
my $a = 1;
my $b = 0;
$b if my $c = $a;
print "c=$c\n";
$a = 1;
$b = 0;
$c = $a && $b;
print "c=$c\n";
tmp16.pl syntax OK