quiet compiler warning about ptr->int conversion

diff --git a/include/list.h b/include/list.h
index ed3ec6f619e310a3d8810619887fce364ad6043f..b8571ed2ec1f4d755be8278ae3363e7bfc572cb9 100644 (file)
--- a/include/list.h
+++ b/include/list.h
@@ -32,7 +32,7 @@
 
 /* give offset of a field inside struct */
 #ifndef offsetof
-#define offsetof(type, field) ((unsigned)&(((type *)0)->field))
+#define offsetof(type, field) ((unsigned long)&(((type *)0)->field))
 #endif
 
 /* given pointer to field inside struct, return pointer to struct */