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-rw-r--r--ext/socket/rubysocket.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/ext/socket/rubysocket.h b/ext/socket/rubysocket.h
index ecd1dfd..352da8c 100644
--- a/ext/socket/rubysocket.h
+++ b/ext/socket/rubysocket.h
@@ -430,4 +430,12 @@ static inline void rsock_maybe_wait_fd(int fd) { }
# define MSG_DONTWAIT_RELIABLE 0
#endif
+#if !defined HAVE_INET_NTOP && ! defined _WIN32
+const char *inet_ntop(int, const void *, char *, size_t);
+#elif defined __MINGW32__
+# define inet_ntop(f,a,n,l) rb_w32_inet_ntop(f,a,n,l)
+#elif defined _MSC_VER && RUBY_MSVCRT_VERSION < 90
+const char *WSAAPI inet_ntop(int, const void *, char *, size_t);
+#endif
+
#endif