From d0f5817f4720b49ffaee9fa9593b2f11446963a0 Mon Sep 17 00:00:00 2001
From: Benjamin Barenblat <bbaren@mit.edu>
Date: Thu, 18 Feb 2016 21:39:06 -0500
Subject: Add nullary constructor to IoError

The constructor constructs an IoError based on the current errno.
---
 src/posix_extras.h | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/posix_extras.h')

diff --git a/src/posix_extras.h b/src/posix_extras.h
index b9c0f12..001968f 100644
--- a/src/posix_extras.h
+++ b/src/posix_extras.h
@@ -15,6 +15,7 @@
 #ifndef POSIX_EXTRAS_H_
 #define POSIX_EXTRAS_H_
 
+#include <cerrno>
 #include <stdexcept>
 #include <string>
 
@@ -26,6 +27,8 @@ namespace scoville {
 
 class IoError : public std::runtime_error {
  public:
+  IoError() : IoError(errno) {}
+
   explicit IoError(const int number)
       : std::runtime_error(Message(number)), number_(number) {}
 
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