Explain why we use the unsigned int format for a signed int variable.
(Should 'code' be cast to the right pointer type?)
diff --git a/Modules/fcntlmodule.c b/Modules/fcntlmodule.c
index d109e29..a368494 100644
--- a/Modules/fcntlmodule.c
+++ b/Modules/fcntlmodule.c
@@ -96,6 +96,10 @@
fcntl_ioctl(PyObject *self, PyObject *args)
{
int fd;
+ /* In PyArg_ParseTuple below, use the unsigned int 'I' format for
+ the signed int 'code' variable, because Python turns 0x8000000
+ into a large positive number (PyLong, or PyInt on 64-bit
+ platforms,) whereas C expects it to be a negative int */
int code;
int arg;
int ret;