Name: typecheck.h Addition 
Author: Rusty Russell
Status: Simple

D: This patch adds a linux/typecheck.h file, which can be used for
D: simple typechecking on macro arguments.

diff -urN -I \$.*\$ --exclude TAGS -X /home/rusty/current-dontdiff --minimal linux-2.4.16-uml/include/linux/typecheck.h working-2.4.16-uml-proc/include/linux/typecheck.h
--- linux-2.4.16-uml/include/linux/typecheck.h	Thu Jan  1 10:00:00 1970
+++ working-2.4.16-uml-proc/include/linux/typecheck.h	Thu Dec 20 12:31:41 2001
@@ -0,0 +1,29 @@
+#ifndef _LINUX_TYPECHECK_H
+#define _LINUX_TYPECHECK_H
+/* Simple macros to do compile-time type checking.  IIRC, Jakub
+   Jelinek came up with this idea for the 2.4 module init code. */
+/* (C) 2001 Rusty Russell */
+
+#define __CHECK_byte(name, p) /* Yeah, whatever */
+#define __CHECK_short(name, p) \
+	extern inline short *__CHECK_##name(void) { return(p); }
+#define __CHECK_ushort(name, p) \
+	extern inline unsigned short *__CHECK_##name(void) { return(p); }
+#define __CHECK_int(name, p) \
+	extern inline int *__CHECK_##name(void) { return(p); }
+#define __CHECK_uint(name, p) \
+	extern inline unsigned int *__CHECK_##name(void) { return(p); }
+#define __CHECK_long(name, p) \
+	extern inline long *__CHECK_##name(void) { return(p); }
+#define __CHECK_ulong(name, p) \
+	extern inline unsigned long *__CHECK_##name(void) { return(p); }
+#define __CHECK_charp(name, p) \
+	extern inline char **__CHECK_##name(void) { return(p); }
+#define __CHECK_bool(name, p) \
+	extern inline int *__CHECK_##name(void) { return(p); }
+#define __CHECK_invbool(name, p) \
+	extern inline int *__CHECK_##name(void) { return(p); }
+#define __CHECK_string(name, p) \
+	extern inline char *__CHECK_##name(void) { return(p); }
+
+#endif /* _LINUX_TYPECHECK_H */