From a2bf626b54fe24f4e2c1890d2b92912116847e47 Mon Sep 17 00:00:00 2001
From: Nikita Kniazev <nok.raven@gmail.com>
Date: Tue, 26 Mar 2019 00:41:31 +0300
Subject: [PATCH] __builtin_unreachable was introduced in GCC 4.5

https://godbolt.org/z/7oXS2i
---
 include/boost/config/compiler/gcc.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/boost/config/compiler/gcc.hpp b/include/boost/config/compiler/gcc.hpp
index 9ae6072e..18412b07 100644
--- a/include/boost/config/compiler/gcc.hpp
+++ b/include/boost/config/compiler/gcc.hpp
@@ -327,7 +327,7 @@
 
 //
 // __builtin_unreachable:
-#if BOOST_GCC_VERSION >= 40800
+#if BOOST_GCC_VERSION >= 40500
 #define BOOST_UNREACHABLE_RETURN(x) __builtin_unreachable();
 #endif