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POCreating boost::thread with an std::shared_ptr object instance
 

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    <p>I have the following two code segments. The first block compiles and works as expected. However the second block does not compile. </p> <p>My question is, given the code below what is the correct syntax when trying to create a thread based on an instance of an object that is being proxied by a shared_ptr?</p> <pre><code>#include &lt;iostream&gt; #include &lt;new&gt; #include &lt;memory&gt; #include &lt;boost/thread.hpp&gt; struct foo { void boo() {} }; int main() { //This works { foo* fptr = new foo; boost::thread t(&amp;foo::boo,fptr); t.join(); delete fptr; } //This doesn't work { std::shared_ptr&lt;foo&gt; fptr(new foo); boost::thread t(&amp;foo::boo,fptr); t.join(); } return 0; } </code></pre> <p>The compiler error:</p> <pre><code>Error 5 error C2784: 'T *boost::get_pointer(T *)' : could not deduce template argument for 'T *' from 'std::tr1::shared_ptr&lt;_Ty&gt;' c:\program files (x86)\boost\boost_1_47\boost\bind\mem_fn_template.hpp 40 1 htest Error 3 error C2784: 'T *boost::get_pointer(const std::auto_ptr&lt;_Ty&gt; &amp;)' : could not deduce template argument for 'const std::auto_ptr&lt;_Ty&gt; &amp;' from 'std::tr1::shared_ptr&lt;_Ty&gt;' c:\program files (x86)\boost\boost_1_47\boost\bind\mem_fn_template.hpp 40 1 htest Error 4 error C2784: 'T *boost::get_pointer(const std::auto_ptr&lt;_Ty&gt; &amp;)' : could not deduce template argument for 'const std::auto_ptr&lt;_Ty&gt; &amp;' from 'std::tr1::shared_ptr&lt;_Ty&gt;' c:\program files (x86)\boost\boost_1_47\boost\bind\mem_fn_template.hpp 40 1 htest Error 8 error C2784: 'T *boost::get_pointer(const boost::shared_ptr&lt;X&gt; &amp;)' : could not deduce template argument for 'const boost::shared_ptr&lt;X&gt; &amp;' from 'std::tr1::shared_ptr&lt;_Ty&gt;' c:\program files (x86)\boost\boost_1_47\boost\bind\mem_fn_template.hpp 40 1 htest Error 9 error C2784: 'T *boost::get_pointer(const boost::shared_ptr&lt;X&gt; &amp;)' : could not deduce template argument for 'const boost::shared_ptr&lt;X&gt; &amp;' from 'std::tr1::shared_ptr&lt;_Ty&gt;' c:\program files (x86)\boost\boost_1_47\boost\bind\mem_fn_template.hpp 40 1 htest Error 1 error C2784: 'T *boost::get_pointer(const boost::scoped_ptr&lt;T&gt; &amp;)' : could not deduce template argument for 'const boost::scoped_ptr&lt;T&gt; &amp;' from 'std::tr1::shared_ptr&lt;_Ty&gt;' c:\program files (x86)\boost\boost_1_47\boost\bind\mem_fn_template.hpp 40 1 htest Error 2 error C2784: 'T *boost::get_pointer(const boost::scoped_ptr&lt;T&gt; &amp;)' : could not deduce template argument for 'const boost::scoped_ptr&lt;T&gt; &amp;' from 'std::tr1::shared_ptr&lt;_Ty&gt;' c:\program files (x86)\boost\boost_1_47\boost\bind\mem_fn_template.hpp 40 1 htest Error 6 error C2784: 'T *boost::get_pointer(const boost::reference_wrapper&lt;T&gt; &amp;)' : could not deduce template argument for 'const boost::reference_wrapper&lt;T&gt; &amp;' from 'std::tr1::shared_ptr&lt;_Ty&gt;' c:\program files (x86)\boost\boost_1_47\boost\bind\mem_fn_template.hpp 40 1 htest Error 7 error C2784: 'T *boost::get_pointer(const boost::reference_wrapper&lt;T&gt; &amp;)' : could not deduce template argument for 'const boost::reference_wrapper&lt;T&gt; &amp;' from 'std::tr1::shared_ptr&lt;_Ty&gt;' c:\program files (x86)\boost\boost_1_47\boost\bind\mem_fn_template.hpp 40 1 htest Error 10 error C2784: 'T *boost::get_pointer(const boost::intrusive_ptr&lt;T&gt; &amp;)' : could not deduce template argument for 'const boost::intrusive_ptr&lt;T&gt; &amp;' from 'std::tr1::shared_ptr&lt;_Ty&gt;' c:\program files (x86)\boost\boost_1_47\boost\bind\mem_fn_template.hpp 40 1 htest Error 11 error C2784: 'T *boost::get_pointer(const boost::intrusive_ptr&lt;T&gt; &amp;)' : could not deduce template argument for 'const boost::intrusive_ptr&lt;T&gt; &amp;' from 'std::tr1::shared_ptr&lt;_Ty&gt;' c:\program files (x86)\boost\boost_1_47\boost\bind\mem_fn_template.hpp 40 1 htest </code></pre>
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