1 files changed, 8 insertions, 0 deletions
diff --git a/libs/libcurl/src/ldap.c b/libs/libcurl/src/ldap.c
index 9d702ffb2f..aa36b0ed66 100644
--- a/libs/libcurl/src/ldap.c
+++ b/libs/libcurl/src/ldap.c
@@ -140,6 +140,14 @@ static void _ldap_free_urldesc(LDAPURLDesc *ludp);
 #define ldap_err2string ldap_err2stringA
 #endif
 
+#if defined(USE_WIN32_LDAP) && defined(_MSC_VER) && (_MSC_VER <= 1600)
+/* Workaround for warning:
+   'type cast' : conversion from 'int' to 'void *' of greater size */
+#undef LDAP_OPT_ON
+#undef LDAP_OPT_OFF
+#define LDAP_OPT_ON   ((void *)(size_t)1)
+#define LDAP_OPT_OFF  ((void *)(size_t)0)
+#endif
 
 static CURLcode ldap_do(struct Curl_easy *data, bool *done);