tree a57165e9c8aa18b9a11c185f3bd018c9dacd65e8
parent a5ca7dd71ad0b3d05e884c43aacbc37619af9779
author Tim Peters <tim.peters@gmail.com> 990660837 +0000
committer Tim Peters <tim.peters@gmail.com> 990660837 +0000
HG:extra convert_revision:svn%3A6015fed2-1504-0410-9fe1-9d1591cc4771/python/branches/legacy-trunk%4020932

Jack Jansen hit a bug in the new dict code, reported on python-dev.

dictresize() was too aggressive about never ever resizing small dicts.
If a small dict is entirely full, it needs to rebuild it despite that
it won't actually resize it, in order to purge old dummy entries thus
creating at least one virgin slot (lookdict assumes at least one such
exists).

Also took the opportunity to add some high-level comments to dictresize.