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Apply perky's fix for #1503157: "/".join([u"", u""]) raising OverflowError.

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Also improve error message on overflow.
This commit is contained in:
Georg Brandl 2006-06-10 06:40:50 +00:00
parent 6946ea0be0
commit 90e27d38f5
3 changed files with 6 additions and 4 deletions
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6
Objects/unicodeobject.c
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@ -4491,11 +4491,11 @@ PyUnicode_Join(PyObject *separator, PyObject *seq)
/* Make sure we have enough space for the separator and the item. */
itemlen = PyUnicode_GET_SIZE(item);
new_res_used = res_used + itemlen;
if (new_res_used <= 0)
if (new_res_used < 0)
goto Overflow;
if (i < seqlen - 1) {
new_res_used += seplen;
if (new_res_used <= 0)
if (new_res_used < 0)
goto Overflow;
}
if (new_res_used > res_alloc) {
@ -4536,7 +4536,7 @@ PyUnicode_Join(PyObject *separator, PyObject *seq)
Overflow:
PyErr_SetString(PyExc_OverflowError,
"join() is too long for a Python string");
"join() result is too long for a Python string");
Py_DECREF(item);
/* fall through */