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Backport r62261 from trunk:

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Prevent PyString_FromStringAndSize() from passing negative sizes on to lower
level memory allocation functions.  Raise a SystemError and return NULL
instead.
This commit is contained in:
Gregory P. Smith 2008-04-09 23:41:13 +00:00
parent 3782da4e0a
commit 14acde30f6
2 changed files with 13 additions and 3 deletions
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5
Objects/stringobject.c
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@ -54,6 +54,11 @@ PyString_FromStringAndSize(const char *str, Py_ssize_t size)
{
register PyStringObject *op;
assert(size >= 0);
if (size < 0) {
PyErr_SetString(PyExc_SystemError,
"Negative size passed to PyString_FromStringAndSize");
return NULL;
}
if (size == 0 && (op = nullstring) != NULL) {
#ifdef COUNT_ALLOCS
null_strings++;