[issue3537] dict creation failure causes crash

[Georg Brandl]

Georg Brandl <georg at python.org> added the comment:

The problem is that PyDict_New doesn't reinitialize the fields of a dict
from the free list when the number of entries is zero. For a
preconstructed dict (like created by BUILD_MAP) of size >=8, however,
there will be an allocated ma_table and ma_mask will be 16-1, not 8-1.

I propose the attached patch.

----------
keywords: +patch
Added file: http://bugs.python.org/file11095/dictobj.diff

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue3537>
_______________________________________