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-rw-r--r--Modules/socketmodule.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/Modules/socketmodule.c b/Modules/socketmodule.c
index db3e051..8d9d3c3 100644
--- a/Modules/socketmodule.c
+++ b/Modules/socketmodule.c
@@ -5534,8 +5534,9 @@ socket_sethostname(PyObject *self, PyObject *args)
Py_buffer buf;
int res, flag = 0;
-#ifdef _AIX
-/* issue #18259, not declared in any useful header file */
+#if defined(_AIX) || (defined(__sun) && defined(__SVR4) && Py_SUNOS_VERSION <= 510)
+/* issue #18259, sethostname is not declared in any useful header file on AIX
+ * the same is true for Solaris 10 */
extern int sethostname(const char *, size_t);
#endif