From 1e19b29abd3f77a76e22f99edc1c92c72b0c3915 Mon Sep 17 00:00:00 2001
From: Phil Budne <phil@ultimate.com>
Date: Wed, 23 Mar 2016 10:31:57 -0400
Subject: [PATCH] add return values to main to make it Makefile compatible!

---
 tools/b.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/tools/b.c b/tools/b.c
index b7dee27..f1f4109 100644
--- a/tools/b.c
+++ b/tools/b.c
@@ -60,12 +60,12 @@ main(int argc, char **argv) {
     if (argc > 2) {
       if ((fout = creat(argv[2], 0777))<0) {
         error('fo');
-        return;
+        return 1;
       }
     }
     if ((fin = open(argv[1],0))<0) {
       error('fi');
-      return;
+      return 1;
     }
   }
 
@@ -74,6 +74,7 @@ main(int argc, char **argv) {
     extdef();
     blkend();
   }
+  return 0;
 }
 
 int *lookup() {