X-Git-Url: http://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=ccan%2Fcast%2F_info;h=29128b8d5cf7cff915b07fa01783c2c44727073f;hp=d66e7091b42ccfc45a1d7c86c12b114f6b4b4d3a;hb=a8722345053b7cd860499aa31fd6bb414c120cc8;hpb=dd0404162fd548cd1774943335560a2e58373914

diff --git a/ccan/cast/_info b/ccan/cast/_info
index d66e7091..29128b8d 100644
--- a/ccan/cast/_info
+++ b/ccan/cast/_info
@@ -1,5 +1,6 @@
-#include <string.h>
 #include "config.h"
+#include <stdio.h>
+#include <string.h>
 
 /**
  * cast - routines for safer casting.
@@ -19,10 +20,11 @@
  * License: LGPL (v2.1 or any later version)
  *
  * Example:
- *	// Given "test" contains "3 t's in 'test string'
+ *	// Given "test" output contains "3 t's in 'test string'"
  *	#include <ccan/cast/cast.h>
  *	#include <stdint.h>
  *	#include <stdio.h>
+ *	#include <stdlib.h>
  *
  *	// Find char @orig in @str, if @repl, replace them.  Return number.
  *	static size_t find_chars(char *str, char orig, char repl)
@@ -52,6 +54,9 @@
  *	{
  *		uint64_t hash;
  *
+ *		if (argc != 2) {
+ *			fprintf(stderr, "Needs argument\n"); exit(1);
+ *		}
  *		// find_chars wants a non-const string, but doesn't
  *		// need it if repl == 0.
  *		printf("%zu %c's in 'test string'\n",