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$NetBSD: patch-Modules___multiprocessing_semaphore.c,v 1.1 2016/07/11 12:17:13 ryoon Exp $
--- Modules/_multiprocessing/semaphore.c.orig 2016-06-25 21:49:31.000000000 +0000
+++ Modules/_multiprocessing/semaphore.c
@@ -424,7 +424,11 @@ newsemlockobject(PyTypeObject *type, SEM
static PyObject *
semlock_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
{
+#if defined(__NetBSD__)
+ char buffer[15];
+#else
char buffer[256];
+#endif
SEM_HANDLE handle = SEM_FAILED;
int kind, maxvalue, value;
PyObject *result;
@@ -444,10 +448,19 @@ semlock_new(PyTypeObject *type, PyObject
* _PyOS_URandom() are treated as unsigned long to ensure that the filename
* is valid (no special characters). */
do {
+#if defined(__NetBSD__)
+ unsigned char suffix1;
+ unsigned char suffix2;
+ _PyOS_URandom((char *)&suffix1, sizeof(suffix1));
+ _PyOS_URandom((char *)&suffix2, sizeof(suffix2));
+ PyOS_snprintf(buffer, sizeof(buffer), "/mp%ld-%x%x", (long)getpid(),
+ suffix1, suffix2);
+#else
unsigned long suffix;
_PyOS_URandom((char *)&suffix, sizeof(suffix));
PyOS_snprintf(buffer, sizeof(buffer), "/mp%ld-%lu", (long)getpid(),
suffix);
+#endif
SEM_CLEAR_ERROR();
handle = SEM_CREATE(buffer, value, maxvalue);
} while ((handle == SEM_FAILED) && (errno == EEXIST) && (++try < 100));
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