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Add check in long-to-int conversion for at least one digit.

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This commit is contained in:
Guido van Rossum 1998-06-22 03:54:46 +00:00
parent 3b2b34790f
commit e67629774f
1 changed files with 7 additions and 0 deletions
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7
Objects/longobject.c
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@ -453,6 +453,7 @@ PyLong_FromString(str, pend, base)
int base;
{
int sign = 1;
char *start;
PyLongObject *z;
if ((base != 0 && base < 2) || base > 36) {
@ -481,6 +482,7 @@ PyLong_FromString(str, pend, base)
if (base == 16 && str[0] == '0' && (str[1] == 'x' || str[1] == 'X'))
str += 2;
z = _PyLong_New(0);
start = str;
for ( ; z != NULL; ++str) {
int k = -1;
PyLongObject *temp;
@ -497,6 +499,11 @@ PyLong_FromString(str, pend, base)
Py_DECREF(z);
z = temp;
}
if (str == start) {
PyErr_SetString(PyExc_ValueError,
"no digits in long int constant");
return NULL;
}
if (sign < 0 && z != NULL && z->ob_size != 0)
z->ob_size = -(z->ob_size);
if (pend)