C4510 in concept_check

[gast128@…]

I was using boost::is_sorted which includes concept library. This gives C4510 and C4610 on warning level 4 with vs2008 in the following case:

#include <boost/concept_check.hpp>

struct Bla
{
    Bla (int /*i*/)
    {}
};

bool operator<(const Bla&, const Bla&)
{
    return false;
}

void f()
{
   BOOST_CONCEPT_ASSERT((boost::LessThanComparableConcept<Bla>));
}

I might use it incorrectly; I am not completely sure how to steer this concept library. However it is also easy reproducable with boost::is_sorted(...).

The concept_check.hpp already seems to supress these warnings, but maybe the '#pragma pop' is too early.

[Steven Watanabe]

(In [71053]) Supress msvc warnings. Fixes #5102.