arguments for "format" 'x', 'X', 'o' and 'u' must be unsigned int.

bugs

@@ -37,3 +37,7 @@ Wed Jan 28 14:48:12 EDT 1998
 Mon Mar  9 15:26:09 EST 1998
 >> gsub('a', '(b?)%1*' ...) loops (because the capture is empty).
 
+** lstrlib.c
+Mon May 18 19:20:00 EST 1998
+>> arguments for "format" 'x', 'X', 'o' and 'u' must be unsigned int.
+