[issue14381] Intern certain integral floats for memory savings and performance

Mark Dickinson report at bugs.python.org
Thu Apr 19 11:19:03 CEST 2012

Mark Dickinson <dickinsm at gmail.com> added the comment:

> Why do you think it isn't safe, Antoine?

It violates C's strict aliasing rules;  Google for 'C strict aliasing' or 'C type punning' for more information.  This isn't just a theoretical concern:  gcc is known to make optimizations based on the assumption that strict aliasing isn't violated.


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