Subject: Re: [boost] [1.44] [filesystem] filesystem::path construction problems in version 3
From: Beman Dawes (bdawes_at_[hidden])
Date: 2010-08-24 14:41:58
On Thu, Aug 19, 2010 at 1:33 PM, Beman Dawes <bdawes_at_[hidden]> wrote:
> On Thu, Aug 19, 2010 at 9:53 AM, Adam Badura <a.badura_at_[hidden]> wrote:
>> It seems Boost.Filesystem v. 3 in Boost 1.44 has some problems in
>> filesystem::path construction.
>> Secondly filesystem::path accepts to much in its constructors. Currently
>> it accepts even shared_ptr. This is illustrated by following code which was
>> fine in 1.43 while in 1.44 it results in compilation error (VS 2010) of
>> ambiguous call to "fun".
>> #define BOOST_FILESYSTEM_VERSION 3
>> #include <boost/filesystem.hpp>
>> #include <boost/smart_ptr.hpp>
>> class Base
>> class Derived : public Base
>> void fun( const boost::filesystem::path& _path )
>> void fun( const boost::shared_ptr< Base >& _pBase )
>> int main( int argc, char* argv )
>> boost::shared_ptr< Derived > pDerived( new Derived() );
>> fun( pDerived );
>> return 0;
> That one will take a bit more work to solve. I've added the test case
> to path_unit_test.cpp, and will experiment with getting it to pass
> without breaking any of required use cases.
Changeset 64986 adds path_traits::is_pathable and use it to prevent
several path member templates from being considered for overload
resolution of non-pathable types. This clears the particular problem
Adam reported above.
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