From 5b0e3dd3bcbefc4f02e44a6ee0237998cea294ec Mon Sep 17 00:00:00 2001
From: "Dongjia \"toka\" Zhang" <tokazerkje@outlook.com>
Date: Fri, 29 Sep 2023 18:32:09 +0200
Subject: [PATCH] Make fuzzbench debugging easier (#1574)

* to make debugging easier

* debug
---
 fuzzers/fuzzbench/src/lib.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fuzzers/fuzzbench/src/lib.rs b/fuzzers/fuzzbench/src/lib.rs
index 6c29839798..705c1bebb5 100644
--- a/fuzzers/fuzzbench/src/lib.rs
+++ b/fuzzers/fuzzbench/src/lib.rs
@@ -386,7 +386,9 @@ fn fuzz(
     {
         let null_fd = file_null.as_raw_fd();
         dup2(null_fd, io::stdout().as_raw_fd())?;
-        dup2(null_fd, io::stderr().as_raw_fd())?;
+        if !std::env::var("LIBAFL_FUZZBENCH_DEBUG").is_ok() {
+            dup2(null_fd, io::stderr().as_raw_fd())?;
+        }
     }
     // reopen file to make sure we're at the end
     log.replace(OpenOptions::new().append(true).create(true).open(logfile)?);