I think it's just badly tested design because it's "uncharted area" nearly nobody enters.
Which could also be considered a "reason".
It's worth noting that some languages are side effect free by design.
Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery
FootballPerl is like chess, only without the dice
In reply to Re^7: Use of freed value
by LanX
in thread Use of freed value
by ikegami
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