New submission from STINNER Victor:
When the time is folded, time_hash() uses DATE_xxx() macros, instead of
TIME_xxx() macros, and so reads microseconds from the wrong bytes.
Bug introduced by the implementation of the PEP 495 (Local Time Disambiguation).
#define PyDateTime_DATE_GET_MICROSECOND(o) \
((((PyDateTime_DateTime*)o)->data[7] << 16) | \
(((PyDateTime_DateTime*)o)->data[8] << 8) | \
((PyDateTime_DateTime*)o)->data[9])
#define PyDateTime_TIME_GET_MICROSECOND(o) \
((((PyDateTime_Time*)o)->data[3] << 16) | \
(((PyDateTime_Time*)o)->data[4] << 8) | \
((PyDateTime_Time*)o)->data[5])
Attached patch fixes time_hash().
I guess that it's a dummy copy-paste issue.
----------
components: Library (Lib)
files: time_hash.patch
keywords: patch
messages: 284561
nosy: belopolsky, haypo
priority: normal
severity: normal
status: open
title: time_hash() reads the wrong bytes to get microseconds
versions: Python 3.6, Python 3.7
Added file: http://bugs.python.org/file46123/time_hash.patch
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue29140>
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