From 7247cb4e2ef6b4847b2dc59900f46773a5e872c4 Mon Sep 17 00:00:00 2001
From: Chris Beck <render787@gmail.com>
Date: Sat, 17 May 2014 14:16:44 -0400
Subject: [PATCH] bad_lexical_cast derives from std::exception

---
 src/lexical_cast.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/lexical_cast.hpp b/src/lexical_cast.hpp
index 22b69d5e2a21..27ccf0fd7d14 100644
--- a/src/lexical_cast.hpp
+++ b/src/lexical_cast.hpp
@@ -95,7 +95,7 @@ inline To lexical_cast(From value)
 }
 
 /** Thrown when a lexical_cast fails. */
-struct bad_lexical_cast {};
+struct bad_lexical_cast : std::exception {};
 
 namespace implementation {