From 5016d8c7b803f8c0a312198e2635091ebe52f159 Mon Sep 17 00:00:00 2001
From: Lucian Grijincu <lucian@fb.com>
Date: Tue, 14 Jul 2015 10:31:26 -0700
Subject: [PATCH] folly: AsyncIOOp: improve logging message: add strerror

Reviewed By: @philippv

Differential Revision: D2240628
---
 folly/experimental/io/AsyncIO.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/folly/experimental/io/AsyncIO.cpp b/folly/experimental/io/AsyncIO.cpp
index ce540e62..491db24f 100644
--- a/folly/experimental/io/AsyncIO.cpp
+++ b/folly/experimental/io/AsyncIO.cpp
@@ -368,7 +368,11 @@ std::ostream& operator<<(std::ostream& os, const AsyncIOOp& op) {
   }
 
   if (op.state_ == AsyncIOOp::State::COMPLETED) {
-    os << "result=" << op.result_ << ", ";
+    os << "result=" << op.result_;
+    if (op.result_ < 0) {
+      os << " (" << errnoStr(-op.result_) << ')';
+    }
+    os << ", ";
   }
 
   return os << "}";
-- 
2.34.1