id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
11623	Clang rejects some simple BOOST_TEST() statements	Tony Lewis <tonyelewis@…>	Raffi Enficiaud	"Thanks again for the new BOOST_TEST() tool, which looks very useful.

Unfortunately, I'm unable to compile the following under `clang++` (with or without `-std=c++11`) :

{{{#!cpp
#define BOOST_TEST_MODULE comp_doub_mod

#include <boost/test/included/unit_test.hpp>

BOOST_AUTO_TEST_CASE( comp_doubs ) {
        const double num { 1.0 };
        BOOST_TEST( num == 1.0 );
        // BOOST_TEST( 1.0 == num );
}
}}}

This also fails if I swap to the commented-out BOOST_TEST() line.

The core of the error message is:

{{{
[...]/boost/test/tools/floating_point_comparison.hpp:259:25: error: 'mutable' cannot be applied to references
    mutable FPT         m_tested_rel_diff;
                        ^
}}}

I'll attach the full compiler error output."	Bugs	closed	Boost 1.60.0	test	Boost 1.59.0	Problem	fixed	BOOST_TEST,double,float,clang,mutable