--- a/libcruft/misc/lo-error.h	Fri Oct 29 21:33:38 1999 +0000
+++ b/libcruft/misc/lo-error.h	Fri Oct 29 21:39:31 1999 +0000
@@ -29,14 +29,22 @@
 
 extern void liboctave_fatal (const char *fmt, ...) GCC_ATTR_NORETURN;
 
+extern void liboctave_warning (const char *fmt, ...);
+
 typedef void (*liboctave_error_handler) (const char *, ...);
 
-/* Would be nice to make this private, but we want to share it among
-   all the liboctave classes. */
+typedef void (*liboctave_warning_handler) (const char *, ...);
+
+/* Would be nice to make these pointers private, but we want to share
+   them among all the liboctave classes. */
 extern liboctave_error_handler current_liboctave_error_handler;
 
+extern liboctave_warning_handler current_liboctave_warning_handler;
+
 extern void set_liboctave_error_handler (liboctave_error_handler f);
 
+extern void set_liboctave_warning_handler (liboctave_warning_handler f);
+
 #ifdef __cplusplus
 }
 #endif