Re: [Boost-users] [test] new g++ compilation warnings on trunk

Subject: Re: [Boost-users] [test] new g++ compilation warnings on trunk
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2008-10-13 16:42:28

AMDG

Robert Mecklenburg wrote:
> Compiling against the boost trunk I'm getting hundreds of these:
>
>     g++ -Wall -Wextra -Wno-missing-braces -g  -ftrapv  -DBOOST_1_36_0 -Iboost-1_37 -MMD -MP -DUSE_TRAPV  -c -o src/test/BlobTest.o src/test/BlobTest.cpp
>     boost/test/floating_point_comparison.hpp:224: warning: 'boost::test_tools::<unnamed>::check_is_close' defined but not used
>     boost/test/floating_point_comparison.hpp:246: warning: 'boost::test_tools::<unnamed>::check_is_small' defined but not used
>
> Any chance we can fix this?  If you need a tester for g++ 4.2.3, I can
> do it.
>   

The usual trick for avoiding ODR violations seems to work.

class X {};

template<class T>
struct static_ {
    static T value;
};

template<class T>
T static_<T>::value;

namespace {
    const X& x = static_<X>::value;
}

int main() {
}

In Christ,
Steven Watanabe