From 08d38c1e39cbeaaf30004c53a7460c397b75d7a3 Mon Sep 17 00:00:00 2001
From: Daniel James <daniel@calamity.org.uk>
Date: Wed, 15 Aug 2007 14:35:39 +0000
Subject: [PATCH] Avoid a comparison with zero warning on gcc when compiling
 with -Wextra.

[SVN r38679]
---
 hash/test/Jamfile.v2                           | 2 +-
 include/boost/functional/detail/hash_float.hpp | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/hash/test/Jamfile.v2 b/hash/test/Jamfile.v2
index 8d0649b..2131e7b 100644
--- a/hash/test/Jamfile.v2
+++ b/hash/test/Jamfile.v2
@@ -8,7 +8,7 @@ import testing ;
 project hash-tests
     : requirements
         <toolset>gcc:<define>_GLIBCXX_DEBUG
-        <toolset>gcc:<cxxflags>-Wsign-promo
+        "<toolset>gcc:<cxxflags>-Wsign-promo -Wextra"
         <toolset>msvc:<cxxflags>/W4
     ;
 
diff --git a/include/boost/functional/detail/hash_float.hpp b/include/boost/functional/detail/hash_float.hpp
index 7487ea0..8735e8b 100644
--- a/include/boost/functional/detail/hash_float.hpp
+++ b/include/boost/functional/detail/hash_float.hpp
@@ -106,7 +106,7 @@ namespace boost
                         boost::static_log2<limits<T>::radix>::value - 1)
                 / limits<std::size_t>::digits;
 
-            for(std::size_t i = 0; i < length; ++i)
+            for(std::size_t i = 0; i != length; ++i)
             {
                 v = boost::hash_detail::call_ldexp(v, limits<std::size_t>::digits);
                 std::size_t part = static_cast<std::size_t>(v);