Simple coroutine crash about coroutine2 HOT 13 CLOSED

I don't use Windows, could you try your example with a larger stack size + uncommented cout?
coro_t::pull_type coro(fixedsize_stack(1024*1024), [&](coro_t::push_type& yield) {

from coroutine2.

fixedsize_stack(1024*1024) doesn't change behaviour.
I've also tried to run it in VS2017:

(boost\context\continuation_fcontext.hpp)

transfer_t context_unwind( transfer_t t) {
    throw forced_unwind( t.fctx);  <---- Unhandled exception at 0x761633AB (ucrtbase.dll) in CoroTest.exe: Fatal program exit requested.
    return { nullptr, nullptr };
}

from coroutine2.

I can't reproduce your problem. I've used msvc-14.1 (VS 2017) and built the test code in directory coroutine2/example.

from coroutine2.

Every example from coroutine2/example work fine, but my test code does not. Is empty coroutine prohibited? Project attached, I build it in release/x86 configuration.
CoroTest.zip

from coroutine2.

I'm not familair with MSVC/Windows but I guess your problem is related to incompatible compiler flags used to compile the boost libraries and the settings in you MSVC project.

from coroutine2.

Flags used to compile boost do not affect my issue. Problem goes away if I turn off global program optimization (/GL) or change /EHsc (default, tells the compiler to assume that functions declared as extern "C" never throw a C++ exception) to /EHs (tells the compiler to assume that functions declared as extern "C" may throw an exception). Does boost throw exceptions from extern "C" functions?

from coroutine2.

yes, an exception might be thrown by ontop_fcontext() (declared as extern 'C') is used in the dtor if stack was not destructed.
I'll add a hint to the documentation

from coroutine2.

Ok, thank you for help!

from coroutine2.

thank you too

from coroutine2.

@olk any chance of using coroutine2/context with global program optimization under MSVC?

from coroutine2.

@devshgraphicsprogramming : I don't know - becaue I don't use Windows

from coroutine2.

is there a particular reason \GL must be disabled?

from coroutine2.

Actually, /EHs should be enough.

from coroutine2.