Predecrement a constant?

[monsoon]

Not much obfuscation really. The idea was to try and see if it was possible with some unusual code to predecrement a constant or at least to pretend to do so.

*0=sub:
lvalue
{my$l},
print
 --0
->(!0)

[RonW]

Very interesting.

I wonder if this is a side effect of the mechanism that provides the predefined variables $0, $1, $2, .... Or maybe it's a "loop hole" in the bare word symbol mechanism.

Either way, I consider this to be a bug in Perl.

Update: But it's a trick. Shame on me for skipping my morning caffeine.