when_all does not support continuing futures that return void

[Diltsman]

The following code fails to compile on VS2015 Update 3. If futures are changed to take and return ints, then everything works.

#include <stlab/concurrency/concurrency.hpp>

#include <iostream>
int main(int argc, char *argv[])
{
	std::cout << "1\n";
	auto future = stlab::async(stlab::default_executor, [] {std::cout << "2\n"; });
	auto future2 = future.then([] {std::cout << "3\n"; }).then([] {std::cout << "5\n"; });
	auto future3 = future.then([] {std::cout << "4\n"; });
	auto future4 = stlab::when_all(stlab::default_executor, [] {std::cout << "6\n"; }, future2, future3);

	std::cout << "7\n";
	while (!future4.get_try());
	return 0;
}

[fosterbrereton]

Thanks for the report- we are aware of the issue and are looking into it.

[fosterbrereton]

This has been fixed in develop as of d91c3f0 and will be part of the next release.

[fosterbrereton]

This issue has been fixed in master as of the 1.1 release.