the datetime type is defined as
#define _PyTZINFO_HEAD \
PyObject_HEAD \
Py_hash_t hashcode; \
char hastzinfo; /* boolean flag */
typedef struct
{
_PyTZINFO_HEAD
unsigned char data[_PyDateTime_DATE_DATASIZE];
} PyDateTime_Date;
and data is used to calculate the hash of the object, not being 4 byte
aligned, you get the bus error. Inserting three fill bytes, are making
the data member 4-byte aligned solves the issue, however introducing an
ABI change makes the new datetime ABI incompatible. For now I don't
know a solution to make that change and keep the ABI compatible.
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https://bugs.launchpad.net/bugs/1620754
Title:
hash(datetime.datetime(...)) fails with python3.5 on armhf (on an
arm64 host) with a bus error
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