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Need a (size_t) cast instead of (unsigned) to be big enough for a Py_ssize_t.

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Raymond Hettinger 2015-02-28 23:29:16 -08:00
parent e4969f5df8
commit c20830804d
1 changed files with 12 additions and 6 deletions
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18
Modules/_collectionsmodule.c
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@ -1,6 +1,12 @@
#include "Python.h" #include "Python.h"
#include "structmember.h" #include "structmember.h"
#ifdef STDC_HEADERS
#include <stddef.h>
#else
#include <sys/types.h> /* For size_t */
#endif
/* collections module implementation of a deque() datatype /* collections module implementation of a deque() datatype
Written and maintained by Raymond D. Hettinger <python@rcn.com> Written and maintained by Raymond D. Hettinger <python@rcn.com>
Copyright (c) 2004-2015 Python Software Foundation. Copyright (c) 2004-2015 Python Software Foundation.
@ -780,15 +786,15 @@ deque_item(dequeobject *deque, Py_ssize_t i)
b = deque->rightblock; b = deque->rightblock;
} else { } else {
i += deque->leftindex; i += deque->leftindex;
n = (Py_ssize_t)((unsigned) i / BLOCKLEN); n = (Py_ssize_t)((size_t) i / BLOCKLEN);
i = (Py_ssize_t)((unsigned) i % BLOCKLEN); i = (Py_ssize_t)((size_t) i % BLOCKLEN);
if (index < (Py_SIZE(deque) >> 1)) { if (index < (Py_SIZE(deque) >> 1)) {
b = deque->leftblock; b = deque->leftblock;
while (n--) while (n--)
b = b->rightlink; b = b->rightlink;
} else { } else {
n = (Py_ssize_t)( n = (Py_ssize_t)(
((unsigned)(deque->leftindex + Py_SIZE(deque) - 1)) ((size_t)(deque->leftindex + Py_SIZE(deque) - 1))
/ BLOCKLEN - n); / BLOCKLEN - n);
b = deque->rightblock; b = deque->rightblock;
while (n--) while (n--)
@ -839,15 +845,15 @@ deque_ass_item(dequeobject *deque, Py_ssize_t i, PyObject *v)
return deque_del_item(deque, i); return deque_del_item(deque, i);
i += deque->leftindex; i += deque->leftindex;
n = (Py_ssize_t)((unsigned) i / BLOCKLEN); n = (Py_ssize_t)((size_t) i / BLOCKLEN);
i = (Py_ssize_t)((unsigned) i % BLOCKLEN); i = (Py_ssize_t)((size_t) i % BLOCKLEN);
if (index <= halflen) { if (index <= halflen) {
b = deque->leftblock; b = deque->leftblock;
while (n--) while (n--)
b = b->rightlink; b = b->rightlink;
} else { } else {
n = (Py_ssize_t)( n = (Py_ssize_t)(
((unsigned)(deque->leftindex + Py_SIZE(deque) - 1)) ((size_t)(deque->leftindex + Py_SIZE(deque) - 1))
/ BLOCKLEN - n); / BLOCKLEN - n);
b = deque->rightblock; b = deque->rightblock;
while (n--) while (n--)