From 721761be2eca7a1bff304e6df3608f8712e25571 Mon Sep 17 00:00:00 2001
From: Jamie Bullock <jamie@jamiebullock.com>
Date: Fri, 5 Oct 2018 10:27:24 +0100
Subject: [PATCH] Typedef ptrdiff_t to ssize_t under Visual Studio

ssize_t is a POSIX extension and therefore not available under Visual Studio.

This change defines ptrdiff_t as ssize_t, which is a compatible typedef since ptrdiff_t should always be at least as big as ssize_t
---
 ringbuf.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/ringbuf.h b/ringbuf.h
index c72bfae..c56bd19 100644
--- a/ringbuf.h
+++ b/ringbuf.h
@@ -28,6 +28,9 @@
 
 #include <stddef.h>
 #include <sys/types.h>
+#ifdef _MSC_VER
+	typedef ptrdiff_t ssize_t;
+#endif
 
 typedef struct ringbuf_t *ringbuf_t;