From 1bdb456ee7767a75d266716459a85743740acc33 Mon Sep 17 00:00:00 2001
From: root <root@plrg-1.ics.uci.edu>
Date: Fri, 15 Nov 2019 00:25:47 -0800
Subject: [PATCH] bug fixe

---
 pipe.cc | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/pipe.cc b/pipe.cc
index 37bb0dc6..b915c792 100644
--- a/pipe.cc
+++ b/pipe.cc
@@ -1,7 +1,9 @@
 #include "common.h"
 #include <unistd.h>
 #include "model.h"
+#include "snapshot-interface.h"
 #include <dlfcn.h>
+#include <errno.h>
 
 static int (*pipe_init_p)(int filep[2]) = NULL;
 
@@ -12,11 +14,12 @@ int pipe(int fildes[2]) {
     model->startChecker();
   }
   if (!pipe_init_p) {
-    pipe_init_p = (int (*)(int file[2])) dlsym(RTLD_NEXT, "pipe");
-    if ((error = dlerror()) != NULL) {
+    pipe_init_p = (int (*)(int fildes[2])) dlsym(RTLD_NEXT, "pipe");
+    char *error = dlerror();
+    if (error != NULL) {
       fputs(error, stderr);
       exit(EXIT_FAILURE);
     }
   }
-  pipe_init_p(filedes);
+  return pipe_init_p(fildes);
 }
-- 
2.34.1