[issue28474] WinError(): Python int too large to convert to C long

[Kelvin You]

Kelvin You added the comment:

Here is the full list of windows error code:
https://msdn.microsoft.com/en-us/library/cc231196.aspx
You can see a lot of error codes is above 0x8000.

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[issue28474] WinError(): Python int too large to convert to C long

[Kelvin You]

Kelvin You added the comment:

I report this issue because the function 
WlanScan(https://msdn.microsoft.com/zh-cn/library/windows/desktop/ms706783(v=vs.85).aspx)
 returns a error code 0x80342002 when the WLAN is disabled on Windows 10.  
ctypes.WinError() raise an exception of 'Python int too large to convert to C 
long' when handle this error code.

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[issue28474] WinError(): Python int too large to convert to C long

[Kelvin You]

New submission from Kelvin You:

// callproc.c
static PyObject *format_error(PyObject *self, PyObject *args)
{
PyObject *result;
wchar_t *lpMsgBuf;
DWORD code = 0;
if (!PyArg_ParseTuple(args, "|i:FormatError", ))  
  ^ Here the format string should be 
"|I:FormatError"
return NULL;
if (code == 0)
code = GetLastError();
lpMsgBuf = FormatError(code);
if (lpMsgBuf) {
result = PyUnicode_FromWideChar(lpMsgBuf, wcslen(lpMsgBuf));
LocalFree(lpMsgBuf);
} else {
result = PyUnicode_FromString("");
}
return result;
}

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components: ctypes
messages: 278963
nosy: Kelvin You
priority: normal
severity: normal
status: open
title: WinError(): Python int too large to convert to C long
type: crash
versions: Python 2.7, Python 3.3, Python 3.4, Python 3.5, Python 3.6

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