From ff7418af730b02d963ff15a660f60811b2c2577a Mon Sep 17 00:00:00 2001
From: Simon Tatham <anakin@pobox.com>
Date: Wed, 19 Sep 2018 12:57:33 +0100
Subject: [PATCH] tree234.c: minor fixes to the test suite.

Added a missing #include of string.h; arranged that the test program
reports the number of errors detected at the end so I don't have to
search its entire output for "ERROR"; made the test program return a
nonzero exit status if any error was found.
---
 tree234.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/tree234.c b/tree234.c
index d3c5293d..6c826309 100644
--- a/tree234.c
+++ b/tree234.c
@@ -1014,6 +1014,9 @@ void *del234(tree234 * t, void *e)
  */
 
 #include <stdarg.h>
+#include <string.h>
+
+int n_errors = 0;
 
 /*
  * Error reporting function.
@@ -1026,6 +1029,7 @@ void error(char *fmt, ...)
     vfprintf(stdout, fmt, ap);
     va_end(ap);
     printf("\n");
+    n_errors++;
 }
 
 /* The array representation of the data. */
@@ -1480,7 +1484,8 @@ int main(void)
 	delpostest(j);
     }
 
-    return 0;
+    printf("%d errors found\n", n_errors);
+    return (n_errors != 0);
 }
 
 #endif