Subject: [Boost-bugs] [Boost C++ Libraries] #3381: Compiler warning for is_signed
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2009-09-01 07:42:14
#3381: Compiler warning for is_signed
------------------------------+---------------------------------------------
Reporter: rbock@⦠| Owner: johnmaddock
Type: Bugs | Status: new
Milestone: Boost 1.41.0 | Component: type_traits
Version: Boost 1.40.0 | Severity: Problem
Keywords: |
------------------------------+---------------------------------------------
Hi,
with g++ 4.2.4, I get the following warning when using
boost::is_signed<long long unsigned int> with -Wall -Wextra:
type_traits/is_signed.hpp:33: warning: comparison of unsigned expression <
0 is always false
I fixed this for myself by replacing
(static_cast<no_cv_t>(-1) < 0)
by
!(static_cast<no_cv_t>(-1) > 0)
Regards,
Roland
-- Ticket URL: <https://svn.boost.org/trac/boost/ticket/3381> Boost C++ Libraries <http://www.boost.org/> Boost provides free peer-reviewed portable C++ source libraries.
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