add SO_ getsockopt options from linux v4.13

[musl] / include / errno.h

diff --git a/include/errno.h b/include/errno.h
index 0361b33..93f5f6e 100644 (file)
--- a/include/errno.h
+++ b/include/errno.h
@@ -9,9 +9,6 @@ extern "C" {
 
 #include <bits/errno.h>
 
-#ifdef __GNUC__
-__attribute__((const))
-#endif
 int *__errno_location(void);
 #define errno (*__errno_location())