Guard ssize_t definition on Windows.

Closes #522. Thanks to trinytron.
eclipse · Sep 4, 2019 · 7686570 · 7686570
1 parent 01530a3
commit 7686570
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diff --git a/ChangeLog.txt b/ChangeLog.txt
@@ -14,6 +14,7 @@ Documentation:
 Build:
 - Fix missing function warnings on NetBSD.
 - Fix WITH_STATIC_LIBRARIES using CMake on Windows. Closes #1369.
+- Guard ssize_t definition on Windows. Closes #522.
 
 
 1.6.4 - 20190801

diff --git a/lib/net_mosq.h b/lib/net_mosq.h
@@ -17,10 +17,13 @@ and the Eclipse Distribution License is available at
 #define NET_MOSQ_H
 
 #ifndef WIN32
-#include <unistd.h>
+# include <unistd.h>
 #else
-#include <winsock2.h>
+# include <winsock2.h>
+# ifndef _SSIZE_T_DEFINED
 typedef SSIZE_T ssize_t;
+# define _SSIZE_T_DEFINED
+# endif
 #endif
 
 #include "mosquitto_internal.h"