id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
11403	exception_ptr.hpp causes crash when .NET tries to unload a DLL that uses boost	onkelhotte@…	Emil Dotchevski	"Hello,
I posted this on the gmane board and Emil Dotchevski said I should open a ticket for this.

We are working with Visual Studio 2013 and have a plain c++ lib that uses boost. To test it, we wrote a (non clr) console program and a WPF GUI for further use.
This WPF GUI contains a clr dll as a wrapper between the .NET world and the plain c++ libs.
At startup, both console and WPF call some function pointers in _initterm in crt0dat.c, especially these two:
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dynamic initializer for 'boost::exception_detail::exception_ptr_static_exception_object<boost::exception_detail::bad_alloc_>::e''(void)
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dynamic initializer for 'boost::exception_detail::exception_ptr_static_exception_object<boost::exception_detail::bad_exception_>::e''(void)

The console terminates cleanly. But the GUI causes an exception in crtdll.c, _CRT_INIT, line 414:

/* call the function, which can eventually change __onexitbegin and __onexitend */
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(*function_to_call)();

The debugger says the value of *function_to_call is
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*function_to_call _t2m@???__Fep@?1???$get_static_exception_object@Ubad_exception_@exception_detail@boost@@@exception_detail@boost@@YA?AVexception_ptr@1@XZ@YAXXZ@?A0xd1be0c67@@YAXXZ

and causes an unhandled exception at 0x74c7c42d (KernelBase.dll), The String binding is invalid.

However, if I change (remove the static keyword) line 130 in exception_ptr.hpp from
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static exception_ptr ep(shared_ptr<exception_detail::clone_base const>(new exception_detail::clone_impl<Exception>(c)));

to

exception_ptr ep(shared_ptr<exception_detail::clone_base const>(new exception_detail::clone_impl<Exception>(c)));

the GUI exits cleanly.

Best regards,[[BR]]
Markus Pieper"	Bugs	new	To Be Determined	exception	Boost 1.56.0	Problem			emildotchevski@…