Issue 1533486: long -> Py_ssize_t (C/API 1.2.1) (original) (raw)

This issue has been migrated to GitHub: https://github.com/python/cpython/issues/43764

classification

process

Created on 2006-08-02 22:18 by jimjjewett, last changed 2022-04-11 14:56 by admin. This issue is now closed.

Messages (5)
msg60957 - (view)	Author: Jim Jewett (jimjjewett)	Date: 2006-08-02 22:18
In the C/API reference manual section 1.2.1, should "assuming sizeof(long) >= sizeof(char*)" change long to Py_ssize_t?
msg63344 - (view)	Author: Alexander Belopolsky (belopolsky) *	Date: 2008-03-07 02:03
I think it should be changed to "because sizeof(Py_ssize_t) == sizeof(void*)"
msg63394 - (view)	Author: Georg Brandl (georg.brandl) *	Date: 2008-03-08 10:05
Fixed in r61305.
msg63401 - (view)	Author: Alexander Belopolsky (belopolsky) *	Date: 2008-03-08 14:02
Georg, did you miss the s/assuming/because/ part of my proposal? Python guarantees that sizeof(Py_ssize_t) == sizeof(size_t) == sizeof(void*). (See PEP 353.) "Assuming" is therefore misleading because it suggests that it may not be always true.
msg63497 - (view)	Author: Georg Brandl (georg.brandl) *	Date: 2008-03-13 07:19
PEP 353 says: "Py_intptr_t needs to be the same size as void*, and Py_ssize_t the same size as size_t. These could differ, e.g. on machines where pointers have segment and offset."