[issue5175] negative PyLong -> C unsigned integral, TypeError or OverflowError?

[Lisandro Dalcin]

New submission from Lisandro Dalcin <dalcinl at gmail.com>:

At Objects/longobject.c, in almost all cases
OverflowError is raised when a unsigned integral is requested from a
negative PyLong. However, this one breaks the rules:

int
_PyLong_AsByteArray(PyLongObject* v,
                  unsigned char* bytes, size_t n,
                  int little_endian, int is_signed)
{
<...>
              if (!is_signed) {
                      PyErr_SetString(PyExc_TypeError,
                              "can't convert negative long to 
unsigned");
                      return -1;
              }
<...>
}

----------
components: Interpreter Core
messages: 81316
nosy: dalcinl
severity: normal
status: open
title: negative PyLong -> C unsigned integral, TypeError or OverflowError?
type: behavior
versions: Python 2.7

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue5175>
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