SPUG: "Clobberation" in ($c,$d)=($d,$c)

[Daniel Chetlin]

During the Q&A session at the Perligata meeting, someone mentioned that
if you alias a variable and then use it on one side of a variable
switch, you get "clobberation". I was thinking about that tonight and
decided to take a look, but I couldn't reproduce it.

If memory serves, the problem was with constructs like:

  *e = \$c;
  ($c, $d) = ($d, $e);

But that seems to work fine, so I must be remembering wrong. Can someone
refresh my memory?

Thanks!

-dlc

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