[issue11462] Peephole creates duplicate and unused constants

[Eugene Toder]

Eugene Toder <eltoder at gmail.com> added the comment:

assert() doesn't quite work here. I need to check that this entry in the table is not used in the next loop. I'd need to put assert in that loop, but by that time I have no easy way to tell which entries are bad, unless I mark them in the first loop. so I mark them under !NDEBUG.

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<http://bugs.python.org/issue11462>
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