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bpo-43475: Fix worst case collision behavior for NaN instances (GH-25493)

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Raymond Hettinger 2021-04-22 08:34:57 -07:00 • committed by GitHub
parent accea7dc2b
commit a07da09ad5
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10 changed files with 25 additions and 21 deletions
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5
Modules/_decimal/_decimal.c
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@ -4536,7 +4536,6 @@ _dec_hash(PyDecObject *v)
#error "No valid combination of CONFIG_64, CONFIG_32 and _PyHASH_BITS"
#endif
const Py_hash_t py_hash_inf = 314159;
const Py_hash_t py_hash_nan = 0;
mpd_uint_t ten_data[1] = {10};
mpd_t ten = {MPD_POS|MPD_STATIC|MPD_CONST_DATA,
0, 2, 1, 1, ten_data};
@ -4555,7 +4554,7 @@ _dec_hash(PyDecObject *v)
return -1;
}
else if (mpd_isnan(MPD(v))) {
return py_hash_nan;
return _Py_HashPointer(v);
}
else {
return py_hash_inf * mpd_arith_sign(MPD(v));
@ -5939,5 +5938,3 @@ error:
return NULL; /* GCOV_NOT_REACHED */
}