X-Git-Url: https://pd.if.org/git/?p=pdclib;a=blobdiff_plain;f=includes%2Fstddef.h;h=e335dd07d3b742f7fc69e6c03606a81beebe094e;hp=f64a9a109279e70e7e3b02904208e0f3416f19a2;hb=d02f38605b53cdff5460cc6b9e1b2a80c3a2ba4c;hpb=3f6094115e79a45413f08361b68b71eb08da306e

diff --git a/includes/stddef.h b/includes/stddef.h
index f64a9a1..e335dd0 100644
--- a/includes/stddef.h
+++ b/includes/stddef.h
@@ -30,7 +30,10 @@ typedef _PDCLIB_size_t size_t;
 
 typedef _PDCLIB_wchar_t   wchar_t;
 
+#ifndef _PDCLIB_NULL_DEFINED
+#define _PDCLIB_NULL_DEFINED _PDCLIB_NULL_DEFINED
 #define NULL _PDCLIB_NULL
+#endif
 
 #define offsetof( type, member ) _PDCLIB_offsetof( type, member )