id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
2929	boost::function cause runtime stack overflow	Dmitriy Iassenev <iassenev@…>	Douglas Gregor	"the bug described below is presented in all the boost versions starting from 1.36 and to development trunk

{{{
#include <boost/function.hpp>

void main()
{
	boost::function<void () > f( &main );
	boost::function<void () > g;
	g.assign ( f, std::allocator<int>() );
}

}}}

this code sample being compiled under MSVC 8.0 SP1 give the following warning

warning C4717: 'boost::detail::function::functor_wrapper<boost::function<void __cdecl(void)>,std::allocator<int> >::functor_wrapper<boost::function<void __cdecl(void)>,std::allocator<int> >' : recursive on all control paths, function will cause runtime stack overflow

if we run the sample, it does cause stack overflow with the following call stack:



 	...

 	test_boost.exe!boost::detail::function::functor_wrapper<boost::function<void __cdecl(void)>,std::allocator<int> >::functor_wrapper<boost::function<void __cdecl(void)>,std::allocator<int> >(const boost::detail::function::functor_wrapper<boost::function<void __cdecl(void)>,std::allocator<int> > & __that={...})  + 0x39 bytes	C++

 	test_boost.exe!boost::detail::function::functor_wrapper<boost::function<void __cdecl(void)>,std::allocator<int> >::functor_wrapper<boost::function<void __cdecl(void)>,std::allocator<int> >(const boost::detail::function::functor_wrapper<boost::function<void __cdecl(void)>,std::allocator<int> > & __that={...})  + 0x39 bytes	C++

 	test_boost.exe!std::_Construct<boost::detail::function::functor_wrapper<boost::function<void __cdecl(void)>,std::allocator<int> >,boost::detail::function::functor_wrapper<boost::function<void __cdecl(void)>,std::allocator<int> > >(boost::detail::function::functor_wrapper<boost::function<void __cdecl(void)>,std::allocator<int> > * _Ptr=0x00185008, const boost::detail::function::functor_wrapper<boost::function<void __cdecl(void)>,std::allocator<int> > & _Val={...})  Line 53 + 0x33 bytes	C++

 	test_boost.exe!std::allocator<boost::detail::function::functor_wrapper<boost::function<void __cdecl(void)>,std::allocator<int> > >::construct(boost::detail::function::functor_wrapper<boost::function<void __cdecl(void)>,std::allocator<int> > * _Ptr=0x00185008, const boost::detail::function::functor_wrapper<boost::function<void __cdecl(void)>,std::allocator<int> > & _Val={...})  Line 156 + 0xd bytes	C++

 	test_boost.exe!boost::detail::function::basic_vtable0<void>::assign_functor_a<boost::function<void __cdecl(void)>,std::allocator<int> >(boost::function<void __cdecl(void)> f={...}, boost::detail::function::function_buffer & functor={...}, std::allocator<int> a={...}, boost::mpl::bool_<0> __formal={...})  Line 591 + 0x60 bytes	C++

 	test_boost.exe!boost::detail::function::basic_vtable0<void>::assign_to_a<boost::function<void __cdecl(void)>,std::allocator<int> >(boost::function<void __cdecl(void)> f={...}, boost::detail::function::function_buffer & functor={...}, std::allocator<int> a={...}, boost::detail::function::function_obj_tag __formal={...})  Line 615	C++

 	test_boost.exe!boost::detail::function::basic_vtable0<void>::assign_to_a<boost::function<void __cdecl(void)>,std::allocator<int> >(boost::function<void __cdecl(void)> f={...}, boost::detail::function::function_buffer & functor={...}, std::allocator<int> a={...})  Line 497 + 0x47 bytes	C++

 	test_boost.exe!boost::function0<void>::assign_to_a<boost::function<void __cdecl(void)>,std::allocator<int> >(boost::function<void __cdecl(void)> f={...}, std::allocator<int> a={...})  Line 949 + 0x3d bytes	C++

 	test_boost.exe!boost::function0<void>::assign<boost::function<void __cdecl(void)>,std::allocator<int> >(boost::function<void __cdecl(void)> f={...}, std::allocator<int> a={...})  Line 802 + 0x34 bytes	C++


 	test_boost.exe!main()  Line 8	C++

"	Bugs	closed	Boost 1.39.0	function	Boost 1.38.0	Showstopper	fixed	boost function stack overflow