in reply to Why is the null while-loop condition expression true?
From perlsyn (5.22.1 at least):
As a special case, if the test in the "for" loop (or the corresponding
"while" loop) is empty, it is treated as true. That is, both
for (;;) {
...
}
and
while () {
...
}
are treated as infinite loops.
In Section
Seekers of Perl Wisdom