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ctypes: cauclate bitfield size in a single arithmetic expression 

Signed-off-by: Filipe Laíns <lains@archlinux.org>
This commit is contained in:
Filipe Laíns 2020-05-27 18:52:30 +01:00
parent a0de97dd90
commit 06151bcab5
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GPG Key ID: F893C674816AA95D
1 changed files with 2 additions and 5 deletions
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7
Modules/_ctypes/cfield.c
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@ -74,9 +74,7 @@ PyCField_FromDesc(PyObject *desc, Py_ssize_t index,
#ifndef MS_WIN32 #ifndef MS_WIN32
if (pack && bitsize) { /* packed bitfield */ if (pack && bitsize) { /* packed bitfield */
size = 1; size = (bitsize - 1) / 8 + 1;
while(size * 8 < bitsize)
size += 1;
} else } else
#endif #endif
size = dict->size; size = dict->size;
@ -182,8 +180,7 @@ PyCField_FromDesc(PyObject *desc, Py_ssize_t index,
case EXPAND_BITFIELD: case EXPAND_BITFIELD:
if (pack) if (pack)
while(size * 8 < (*pbitofs + bitsize)) size = (*pbitofs + bitsize - 1) / 8 + 1;
size += 1;
*poffset += size - *pfield_size/8; *poffset += size - *pfield_size/8;
*psize += size - *pfield_size/8; *psize += size - *pfield_size/8;