auto&& awaitable = **get_awaitable**(promise, static_cast<decltype(value)>(value));
auto&& awaiter = get_awaiter(static_cast<decltype(awaitable)>(awaitable));

decltype(auto) **get_awaitable**(P& promise, T&& expr)
{
  if constexpr (has_any_await_transform_member_v<P>)
    return promise.await_transform(static_cast<T&&>(expr));
  else
    return static_cast<T&&>(expr);
}

asyncio/include/asyncio/handle.h:9:10: fatal error: source_location: No such file or directory
    9 | #include <source_location>
       |          ^~~~~~~~~~~~~~~~~

asyncio_ut is a Catch v3.0.0-preview.3 host application.
Run with -? for options

Randomness seeded to: 1868188266

-------------------------------------------------------------------------------
Scenario: test timeout
  wait_for with gather
-------------------------------------------------------------------------------
/home/ubuntu/c++/asyncio/test/ut/task_test.cpp:275
...............................................................................

/home/ubuntu/c++/asyncio/test/ut/task_test.cpp:278: FAILED:
  REQUIRE_NOTHROW( co_await wait_for(gather(sleep(10ms), sleep(20ms), sleep(30ms)), 50ms) )
due to unexpected exception with message:
  TimeoutError

===============================================================================
test cases: 11 | 10 passed | 1 failed
assertions: 96 | 95 passed | 1 failed`

#include <asyncio/runner.h>
#include <asyncio/start_server.h>
#include <asyncio/sleep.h>
#include <asyncio/wait_for.h>
#include <arpa/inet.h>

using namespace std::chrono;
using asyncio::Task;
using asyncio::Stream;
using asyncio::get_in_addr;
using asyncio::get_in_port;

Task<> handle_echo(Stream stream) {
    auto& sockinfo = stream.get_sock_info();
    auto sa = reinterpret_cast<const sockaddr*>(&sockinfo);
    char addr[INET6_ADDRSTRLEN] {};

    auto data = co_await stream.read(100);
    fmt::print("Received: '{}' from '{}:{}'\n", data.data(),
               inet_ntop(sockinfo.ss_family, get_in_addr(sa), addr, sizeof addr),
               get_in_port(sa));

    co_await asyncio::sleep(300ms);
    fmt::print("Send: '{}'\n", data.data());
    co_await stream.write(data);

    fmt::print("Close the connection\n");
    stream.close();
}

Task<void> amain() {
    auto server = co_await asyncio::start_server(
            handle_echo, "127.0.0.1", 8888);

    fmt::print("Serving on 127.0.0.1:8888\n");

    co_await server.serve_forever();
}

int main() {
    asyncio::run(amain());
    return 0;
}

#include <iostream>
#include <asyncio/open_connection.h>
#include <asyncio/runner.h>
#include <asyncio/sleep.h>
#include <asyncio/schedule_task.h>
#include <asyncio/wait_for.h>

using namespace asyncio;
using namespace std::chrono;

Task<> tcp_echo_client(std::string_view message) {
        auto stream = co_await asyncio::open_connection("127.0.0.1", 8888);

        fmt::print("Send: '{}'\n", message);
        co_await stream.write(Stream::Buffer(message.begin(), message.end() + 1));

        fmt::print("Send: ok\n");

        auto data = co_await asyncio::wait_for(stream.read(100), 300ms);

        fmt::print("Received: '{}'\n", data.data());

        fmt::print("Close the connection\n");
        stream.close();
}

int main(int argc, char** argv) {

    std::vector<ScheduledTask<Task<>>> tasks;
    for (size_t i = 0; i < 16; ++i)
    {
        tasks.emplace_back(tcp_echo_client("hello world! 1"));
    }
    
    try
    {
        asyncio::run(tcp_echo_client("hello world!"));
    }
    catch(const std::exception& e)
    {
        std::cerr << e.what() << '\n';
    }
    printf("end ....\n");

    return 0;
}

./echo_client 
Send: 'hello world! 1'
Send: 'hello world! 1'
Send: 'hello world! 1'
Send: 'hello world! 1'
Send: 'hello world! 1'
Send: 'hello world! 1'
Send: 'hello world! 1'
Send: 'hello world! 1'
Send: 'hello world! 1'
Send: 'hello world! 1'
Send: 'hello world! 1'
Send: 'hello world! 1'
Send: 'hello world! 1'
Send: 'hello world! 1'
Send: 'hello world! 1'
Send: 'hello world! 1'
Send: 'hello world!'
Send: ok
Send: ok
Send: ok
Send: ok
Send: ok
Send: ok
Send: ok
Send: ok
Send: ok
Send: ok
Send: ok
Send: ok
Send: ok
Send: ok
Send: ok
Send: ok
Send: ok
=================================================================
==26685==ERROR: AddressSanitizer: heap-use-after-free on address 0x612000002a60 at pc 0x5580ce2d05a6 bp 0x7ffc3359c220 sp 0x7ffc3359c210
WRITE of size 1 at 0x612000002a60 thread T0
    #0 0x5580ce2d05a5 in asyncio::Handle::set_state(asyncio::Handle::State) /home/ubuntu/c++/asyncio/include/asyncio/handle.h:25
    #1 0x5580ce2f1e3d in asyncio::EventLoop::run_once() /home/ubuntu/c++/asyncio/src/event_loop.cpp:62
    #2 0x5580ce2f11f7 in asyncio::EventLoop::run_until_complete() /home/ubuntu/c++/asyncio/src/event_loop.cpp:17
    #3 0x5580ce2d4fbe in decltype(auto) asyncio::run<asyncio::Task<void> >(asyncio::Task<void>&&) (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0xf3fbe)
    #4 0x5580ce2cda06 in main /home/ubuntu/c++/asyncio/test/st/echo_client.cpp:40
    #5 0x7fe6a576abf6 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21bf6)
    #6 0x5580ce1f1d49 in _start (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0x10d49)

0x612000002a60 is located 32 bytes inside of 312-byte region [0x612000002a40,0x612000002b78)
freed by thread T0 here:
    #0 0x5580ce282f47 in operator delete(void*) (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0xa1f47)
    #1 0x5580ce2c68a1 in asyncio::Stream::read(long) [clone .actor] /home/ubuntu/c++/asyncio/include/asyncio/stream.h:46
    #2 0x5580ce2c6b29 in asyncio::Stream::read(long) [clone .destroy] /home/ubuntu/c++/asyncio/include/asyncio/stream.h:34
    #3 0x5580ce2e0ee3 in std::__n4861::coroutine_handle<asyncio::Task<std::vector<char, std::allocator<char> > >::promise_type>::destroy() const (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0xffee3)
    #4 0x5580ce2dbd41 in asyncio::Task<std::vector<char, std::allocator<char> > >::destroy() (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0xfad41)
    #5 0x5580ce2d5f81 in asyncio::Task<std::vector<char, std::allocator<char> > >::~Task() (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0xf4f81)
    #6 0x5580ce2dee4f in asyncio::detail::WaitForAwaiterRegistry<asyncio::Task<std::vector<char, std::allocator<char> > >, std::chrono::duration<long, std::ratio<1l, 1000l> > >::~WaitForAwaiterRegistry() (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0xfde4f)
    #7 0x5580ce2ce5c8 in asyncio::Task<decltype ((((declval<asyncio::detail::GetAwaiter<asyncio::Task<std::vector<char, std::allocator<char> > > >::type>)()).await_resume)())> asyncio::detail::wait_for<asyncio::Task<std::vector<char, std::allocator<char> > >, long, std::ratio<1l, 1000l> >(asyncio::NoWaitAtInitialSuspend, asyncio::Task<std::vector<char, std::allocator<char> > >&&, std::chrono::duration<long, std::ratio<1l, 1000l> >) [clone .actor] /home/ubuntu/c++/asyncio/include/asyncio/wait_for.h:101
    #8 0x5580ce2f0d93 in std::__n4861::coroutine_handle<asyncio::Task<std::vector<char, std::allocator<char> > >::promise_type>::resume() const (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0x10fd93)
    #9 0x5580ce2ef90b in asyncio::Task<std::vector<char, std::allocator<char> > >::promise_type::run() (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0x10e90b)
    #10 0x5580ce2f1eb5 in asyncio::EventLoop::run_once() /home/ubuntu/c++/asyncio/src/event_loop.cpp:63
    #11 0x5580ce2f11f7 in asyncio::EventLoop::run_until_complete() /home/ubuntu/c++/asyncio/src/event_loop.cpp:17
    #12 0x5580ce2d4fbe in decltype(auto) asyncio::run<asyncio::Task<void> >(asyncio::Task<void>&&) (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0xf3fbe)
    #13 0x5580ce2cda06 in main /home/ubuntu/c++/asyncio/test/st/echo_client.cpp:40
    #14 0x7fe6a576abf6 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21bf6)

previously allocated by thread T0 here:
    #0 0x5580ce282427 in operator new(unsigned long) (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0xa1427)
    #1 0x5580ce2d3590 in asyncio::Stream::read(long) (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0xf2590)
    #2 0x5580ce2ccb2e in tcp_echo_client(std::basic_string_view<char, std::char_traits<char> >) [clone .actor] /home/ubuntu/c++/asyncio/test/st/echo_client.cpp:28
    #3 0x5580ce2f0df3 in std::__n4861::coroutine_handle<asyncio::Task<void>::promise_type>::resume() const (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0x10fdf3)
    #4 0x5580ce2f0063 in asyncio::Task<void>::promise_type::run() (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0x10f063)
    #5 0x5580ce2f1eb5 in asyncio::EventLoop::run_once() /home/ubuntu/c++/asyncio/src/event_loop.cpp:63
    #6 0x5580ce2f11f7 in asyncio::EventLoop::run_until_complete() /home/ubuntu/c++/asyncio/src/event_loop.cpp:17
    #7 0x5580ce2d4fbe in decltype(auto) asyncio::run<asyncio::Task<void> >(asyncio::Task<void>&&) (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0xf3fbe)
    #8 0x5580ce2cda06 in main /home/ubuntu/c++/asyncio/test/st/echo_client.cpp:40
    #9 0x7fe6a576abf6 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21bf6)

SUMMARY: AddressSanitizer: heap-use-after-free /home/ubuntu/c++/asyncio/include/asyncio/handle.h:25 in asyncio::Handle::set_state(asyncio::Handle::State)
Shadow bytes around the buggy address:
  0x0c247fff84f0: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x0c247fff8500: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fa
  0x0c247fff8510: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00
  0x0c247fff8520: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c247fff8530: 00 00 00 00 00 00 00 00 00 00 00 00 00 fa fa fa
=>0x0c247fff8540: fa fa fa fa fa fa fa fa fd fd fd fd[fd]fd fd fd
  0x0c247fff8550: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x0c247fff8560: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fa
  0x0c247fff8570: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00
  0x0c247fff8580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c247fff8590: 00 00 00 00 00 00 00 00 00 00 00 00 00 fa fa fa
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07 
  Heap left redzone:       fa
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
  Shadow gap:              cc
==26685==ABORTING

#include <iostream>
#include <asyncio/open_connection.h>
#include <asyncio/runner.h>
#include <asyncio/sleep.h>
#include <asyncio/schedule_task.h>
#include <asyncio/wait_for.h>
using asyncio::Stream;
using asyncio::Task;

using namespace std::chrono;

Task<> tcp_echo_client(std::string_view message) {
        auto stream = co_await asyncio::open_connection("127.0.0.1", 8888);

        fmt::print("Send: '{}'\n", message);
        co_await stream.write(Stream::Buffer(message.begin(), message.end()));

        fmt::print("Send: ok\n");

        auto data = co_await asyncio::wait_for(stream.read(100), 300ms);

        fmt::print("wait_for: ok data len {}\n", data.size());
        fmt::print("Received: '{}'\n", data.data());

        fmt::print("Close the connection\n");
        stream.close();
}

int main(int argc, char** argv) {
    asyncio::run(tcp_echo_client("hello world!"));
    return 0;
}

Send: 'hello world!'
Send: ok
wait_for: ok data len 12
=================================================================
==16717==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x60200000019c at pc 0x55555557d747 bp 0x7fffffffcfa0 sp 0x7fffffffc748
READ of size 13 at 0x60200000019c thread T0
    #0 0x55555557d746 in __interceptor_strlen.part.0 (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0x29746)
    #1 0x5555556906bd in fmt::v8::basic_string_view<char>::basic_string_view(char const*) /home/ubuntu/c++/asyncio/third_party/fmt/include/fmt/core.h:440
    #2 0x5555556906bd in fmt::v8::appender fmt::v8::detail::write<char, fmt::v8::appender>(fmt::v8::appender, char const*) /home/ubuntu/c++/asyncio/third_party/fmt/include/fmt/format.h:2122
    #3 0x55555568a2f5 in fmt::v8::appender fmt::v8::detail::default_arg_formatter<char>::operator()<char const*>(char const*) /home/ubuntu/c++/asyncio/third_party/fmt/include/fmt/format.h:2162
    #4 0x55555569254b in decltype ({parm#1}(0)) fmt::v8::visit_format_arg<fmt::v8::detail::default_arg_formatter<char>, fmt::v8::basic_format_context<fmt::v8::appender, char> >(fmt::v8::detail::default_arg_formatter<char>&&, fmt::v8::basic_format_arg<fmt::v8::basic_format_context<fmt::v8::appender, char> > const&) /home/ubuntu/c++/asyncio/third_party/fmt/include/fmt/core.h:1560
    #5 0x55555569254b in fmt::v8::detail::vformat_to<char>(fmt::v8::detail::buffer<char>&, fmt::v8::basic_string_view<char>, fmt::v8::basic_format_args<fmt::v8::basic_format_context<std::conditional<std::is_same<fmt::v8::type_identity<char>::type, char>::value, fmt::v8::appender, std::back_insert_iterator<fmt::v8::detail::buffer<fmt::v8::type_identity<char>::type> > >::type, fmt::v8::type_identity<char>::type> >, fmt::v8::detail::locale_ref)::format_handler::on_replacement_field(int, char const*) /home/ubuntu/c++/asyncio/third_party/fmt/include/fmt/format.h:2919
    #6 0x55555569254b in char const* fmt::v8::detail::parse_replacement_field<char, fmt::v8::detail::vformat_to<char>(fmt::v8::detail::buffer<char>&, fmt::v8::basic_string_view<char>, fmt::v8::basic_format_args<fmt::v8::basic_format_context<std::conditional<std::is_same<fmt::v8::type_identity<char>::type, char>::value, fmt::v8::appender, std::back_insert_iterator<fmt::v8::detail::buffer<fmt::v8::type_identity<char>::type> > >::type, fmt::v8::type_identity<char>::type> >, fmt::v8::detail::locale_ref)::format_handler&>(char const*, char const*, fmt::v8::detail::vformat_to<char>(fmt::v8::detail::buffer<char>&, fmt::v8::basic_string_view<char>, fmt::v8::basic_format_args<fmt::v8::basic_format_context<std::conditional<std::is_same<fmt::v8::type_identity<char>::type, char>::value, fmt::v8::appender, std::back_insert_iterator<fmt::v8::detail::buffer<fmt::v8::type_identity<char>::type> > >::type, fmt::v8::type_identity<char>::type> >, fmt::v8::detail::locale_ref)::format_handler&) /home/ubuntu/c++/asyncio/third_party/fmt/include/fmt/core.h:2536
    #7 0x55555567b74c in void fmt::v8::detail::parse_format_string<false, char, fmt::v8::detail::vformat_to<char>(fmt::v8::detail::buffer<char>&, fmt::v8::basic_string_view<char>, fmt::v8::basic_format_args<fmt::v8::basic_format_context<std::conditional<std::is_same<fmt::v8::type_identity<char>::type, char>::value, fmt::v8::appender, std::back_insert_iterator<fmt::v8::detail::buffer<fmt::v8::type_identity<char>::type> > >::type, fmt::v8::type_identity<char>::type> >, fmt::v8::detail::locale_ref)::format_handler>(fmt::v8::basic_string_view<char>, fmt::v8::detail::vformat_to<char>(fmt::v8::detail::buffer<char>&, fmt::v8::basic_string_view<char>, fmt::v8::basic_format_args<fmt::v8::basic_format_context<std::conditional<std::is_same<fmt::v8::type_identity<char>::type, char>::value, fmt::v8::appender, std::back_insert_iterator<fmt::v8::detail::buffer<fmt::v8::type_identity<char>::type> > >::type, fmt::v8::type_identity<char>::type> >, fmt::v8::detail::locale_ref)::format_handler&&) /home/ubuntu/c++/asyncio/third_party/fmt/include/fmt/core.h:2571
    #8 0x55555567b74c in void fmt::v8::detail::vformat_to<char>(fmt::v8::detail::buffer<char>&, fmt::v8::basic_string_view<char>, fmt::v8::basic_format_args<fmt::v8::basic_format_context<std::conditional<std::is_same<fmt::v8::type_identity<char>::type, char>::value, fmt::v8::appender, std::back_insert_iterator<fmt::v8::detail::buffer<fmt::v8::type_identity<char>::type> > >::type, fmt::v8::type_identity<char>::type> >, fmt::v8::detail::locale_ref) /home/ubuntu/c++/asyncio/third_party/fmt/include/fmt/format.h:2945
    #9 0x55555566dc10 in fmt::v8::vprint(_IO_FILE*, fmt::v8::basic_string_view<char>, fmt::v8::basic_format_args<fmt::v8::basic_format_context<fmt::v8::appender, char> >) /home/ubuntu/c++/asyncio/third_party/fmt/include/fmt/format-inl.h:2611
    #10 0x55555566de4a in fmt::v8::vprint(fmt::v8::basic_string_view<char>, fmt::v8::basic_format_args<fmt::v8::basic_format_context<fmt::v8::appender, char> >) /home/ubuntu/c++/asyncio/third_party/fmt/include/fmt/format-inl.h:2627
    #11 0x555555640102 in void fmt::v8::print<char*>(fmt::v8::basic_format_string<char, fmt::v8::type_identity<char*>::type>, char*&&) /home/ubuntu/c++/asyncio/third_party/fmt/include/fmt/core.h:3150
    #12 0x555555640102 in tcp_echo_client(std::basic_string_view<char, std::char_traits<char> >) [clone .actor] /home/ubuntu/c++/asyncio/test/st/echo_client.cpp:26
    #13 0x555555662401 in std::__n4861::coroutine_handle<asyncio::Task<void>::promise_type>::resume() const (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0x10e401)
    #14 0x555555661671 in asyncio::Task<void>::promise_type::run() (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0x10d671)
    #15 0x5555556634c3 in asyncio::EventLoop::run_once() /home/ubuntu/c++/asyncio/src/event_loop.cpp:63
    #16 0x555555662805 in asyncio::EventLoop::run_until_complete() /home/ubuntu/c++/asyncio/src/event_loop.cpp:17
    #17 0x555555647d14 in decltype(auto) asyncio::run<asyncio::Task<void> >(asyncio::Task<void>&&) (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0xf3d14)
    #18 0x55555564099b in main /home/ubuntu/c++/asyncio/test/st/echo_client.cpp:33
    #19 0x7ffff6a15bf6 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21bf6)
    #20 0x555555564bb9 in _start (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0x10bb9)

0x60200000019c is located 0 bytes to the right of 12-byte region [0x602000000190,0x60200000019c)
allocated by thread T0 here:
    #0 0x5555555f5297 in operator new(unsigned long) (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0xa1297)
    #1 0x555555659af1 in __gnu_cxx::new_allocator<char>::allocate(unsigned long, void const*) /usr/include/c++/11/ext/new_allocator.h:121
    #2 0x5555556552dd in std::allocator<char>::allocate(unsigned long) /usr/include/c++/11/bits/allocator.h:173
    #3 0x5555556552dd in std::allocator_traits<std::allocator<char> >::allocate(std::allocator<char>&, unsigned long) /usr/include/c++/11/bits/alloc_traits.h:460
    #4 0x555555653ae9 in std::_Vector_base<char, std::allocator<char> >::_M_allocate(unsigned long) (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0xffae9)
    #5 0x55555565374c in std::_Vector_base<char, std::allocator<char> >::_M_create_storage(unsigned long) (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0xff74c)
    #6 0x55555564ee7c in std::_Vector_base<char, std::allocator<char> >::_Vector_base(unsigned long, std::allocator<char> const&) (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0xfae7c)
    #7 0x555555657ccd in std::vector<char, std::allocator<char> >::vector(std::vector<char, std::allocator<char> > const&) (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0x103ccd)
    #8 0x555555654b6e in asyncio::Result<std::vector<char, std::allocator<char> > >::result() & (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0x100b6e)
    #9 0x555555651d35 in asyncio::detail::WaitForAwaiter<std::vector<char, std::allocator<char> >, std::chrono::duration<long, std::ratio<1l, 1000l> > >::await_resume() (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0xfdd35)
    #10 0x555555641124 in asyncio::Task<decltype ((((declval<asyncio::detail::GetAwaiter<asyncio::Task<std::vector<char, std::allocator<char> > > >::type>)()).await_resume)())> asyncio::detail::wait_for<asyncio::Task<std::vector<char, std::allocator<char> > >, long, std::ratio<1l, 1000l> >(asyncio::NoWaitAtInitialSuspend, asyncio::Task<std::vector<char, std::allocator<char> > >&&, std::chrono::duration<long, std::ratio<1l, 1000l> >) [clone .actor] /home/ubuntu/c++/asyncio/include/asyncio/wait_for.h:100
    #11 0x5555556623a1 in std::__n4861::coroutine_handle<asyncio::Task<std::vector<char, std::allocator<char> > >::promise_type>::resume() const (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0x10e3a1)
    #12 0x555555660f19 in asyncio::Task<std::vector<char, std::allocator<char> > >::promise_type::run() (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0x10cf19)
    #13 0x5555556634c3 in asyncio::EventLoop::run_once() /home/ubuntu/c++/asyncio/src/event_loop.cpp:63
    #14 0x555555662805 in asyncio::EventLoop::run_until_complete() /home/ubuntu/c++/asyncio/src/event_loop.cpp:17
    #15 0x555555647d14 in decltype(auto) asyncio::run<asyncio::Task<void> >(asyncio::Task<void>&&) (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0xf3d14)
    #16 0x55555564099b in main /home/ubuntu/c++/asyncio/test/st/echo_client.cpp:33
    #17 0x7ffff6a15bf6 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21bf6)

SUMMARY: AddressSanitizer: heap-buffer-overflow (/home/ubuntu/c++/asyncio/build/test/st/echo_client+0x29746) in __interceptor_strlen.part.0
Shadow bytes around the buggy address:
  0x0c047fff7fe0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c047fff7ff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c047fff8000: fa fa fd fd fa fa fd fd fa fa fd fd fa fa fd fd
  0x0c047fff8010: fa fa fd fd fa fa fd fd fa fa fd fd fa fa fd fd
  0x0c047fff8020: fa fa fd fd fa fa fd fd fa fa fd fd fa fa fd fd
=>0x0c047fff8030: fa fa 00[04]fa fa fd fd fa fa fa fa fa fa fa fa
  0x0c047fff8040: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff8050: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff8060: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff8070: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff8080: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07 
  Heap left redzone:       fa
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
  Shadow gap:              cc
==16717==ABORTING
[1] + Done                       "/usr/bin/gdb" --interpreter=mi --tty=${DbgTerm} 0<"/tmp/Microsoft-MIEngine-In-qj4itxmc.b1y" 1>"/tmp/Microsoft-MIEngine-Out-gs1cjxb4.rcj"

nikita@MacBook-Air-Nikita ~ % sw_vers
ProductName:            macOS
ProductVersion:         13.1
BuildVersion:           22C65

In file included from /Users/nikita/Desktop/test/asyncio/src/event_loop.cpp:6:
/Users/nikita/Desktop/test/asyncio/include/asyncio/event_loop.h: In member function 'constexpr void asyncio::EventLoop::WaitEventAwaiter::await_suspend(std::__n4861::coroutine_handle<_Promise>)':
/Users/nikita/Desktop/test/asyncio/include/asyncio/event_loop.h:60:27: error: 'using Selector = struct asyncio::KQueueSelector' {aka 'struct asyncio::KQueueSelector'} has no member named 'register_event'
   60 |                 selector_.register_event(event_);
      |                           ^~~~~~~~~~~~~~
/Users/nikita/Desktop/test/asyncio/include/asyncio/event_loop.h: In member function 'void asyncio::EventLoop::WaitEventAwaiter::destroy()':
/Users/nikita/Desktop/test/asyncio/include/asyncio/event_loop.h:70:27: error: 'using Selector = struct asyncio::KQueueSelector' {aka 'struct asyncio::KQueueSelector'} has no member named 'remove_event'
   70 |                 selector_.remove_event(event_);
      |                           ^~~~~~~~~~~~
/Users/nikita/Desktop/test/asyncio/include/asyncio/event_loop.h: In member function 'bool asyncio::EventLoop::is_stop()':
/Users/nikita/Desktop/test/asyncio/include/asyncio/event_loop.h:93:65: error: 'using Selector = struct asyncio::KQueueSelector' {aka 'struct asyncio::KQueueSelector'} has no member named 'is_stop'
   93 |         return schedule_.empty() && ready_.empty() && selector_.is_stop();
      |                

In file included from /Users/nikita/Desktop/test/asyncio/include/asyncio/open_connection.h:8,
                 from /Users/nikita/Desktop/test/asyncio/test/st/echo_client.cpp:4:
/Users/nikita/Desktop/test/asyncio/include/asyncio/stream.h:98:48: error: 'EPOLLIN' was not declared in this scope; did you mean 'POLL_IN'?
   98 |     Event read_ev_ { .fd = read_fd_, .events = EPOLLIN };
      |                                                ^~~~~~~
      |                                                POLL_IN
/Users/nikita/Desktop/test/asyncio/include/asyncio/stream.h:99:50: error: 'EPOLLOUT' was not declared in this scope; did you mean 'POLL_OUT'?
   99 |     Event write_ev_ { .fd = write_fd_, .events = EPOLLOUT };
      |                                                  ^~~~~~~~
      |                                                  POLL_OUT
/Users/nikita/Desktop/test/asyncio/include/asyncio/open_connection.h: In function 'asyncio::Task<bool> asyncio::detail::connect(int, const sockaddr*, socklen_t)':
/Users/nikita/Desktop/test/asyncio/include/asyncio/open_connection.h:26:36: error: 'EPOLLOUT' was not declared in this scope; did you mean 'POLL_OUT'?
   26 |     Event ev { .fd = fd, .events = EPOLLOUT };
      |                                    ^~~~~~~~
      |                                    POLL_OUT
In file included from /Users/nikita/Desktop/test/asyncio/include/asyncio/start_server.h:9,
                 from /Users/nikita/Desktop/test/asyncio/test/ut/task_test.cpp:14:
/Users/nikita/Desktop/test/asyncio/include/asyncio/stream.h:98:48: error: 'EPOLLIN' was not declared in this scope; did you mean 'POLL_IN'?
   98 |     Event read_ev_ { .fd = read_fd_, .events = EPOLLIN };
      |                                                ^~~~~~~
      |                                                POLL_IN
/Users/nikita/Desktop/test/asyncio/include/asyncio/stream.h:99:50: error: 'EPOLLOUT' was not declared in this scope; did you mean 'POLL_OUT'?
   99 |     Event write_ev_ { .fd = write_fd_, .events = EPOLLOUT };
      |                                                  ^~~~~~~~
      |                                                  POLL_OUT
In file included from /Users/nikita/Desktop/test/asyncio/test/st/echo_server.cpp:1:
/Users/nikita/Desktop/test/asyncio/include/asyncio/stream.h:98:48: error: 'EPOLLIN' was not declared in this scope; did you mean 'POLL_IN'?
   98 |     Event read_ev_ { .fd = read_fd_, .events = EPOLLIN };
      |                                                ^~~~~~~
      |                                                POLL_IN
/Users/nikita/Desktop/test/asyncio/include/asyncio/stream.h:99:50: error: 'EPOLLOUT' was not declared in this scope; did you mean 'POLL_OUT'?
   99 |     Event write_ev_ { .fd = write_fd_, .events = EPOLLOUT };
      |                                                  ^~~~~~~~
      |                                                  POLL_OUT
/Users/nikita/Desktop/test/asyncio/include/asyncio/start_server.h: In member function 'asyncio::Task<> asyncio::Server<CONNECT_CB>::serve_forever()':
/Users/nikita/Desktop/test/asyncio/include/asyncio/start_server.h:33:41: error: 'EPOLLIN' was not declared in this scope; did you mean 'POLL_IN'?
   33 |         Event ev { .fd = fd_, .events = EPOLLIN };
      |                                         ^~~~~~~
      |                                         POLL_IN
In file included from /Users/nikita/Desktop/test/asyncio/test/st/echo_server.cpp:4:
/Users/nikita/Desktop/test/asyncio/include/asyncio/start_server.h: In member function 'asyncio::Task<> asyncio::Server<CONNECT_CB>::serve_forever()':
/Users/nikita/Desktop/test/asyncio/include/asyncio/start_server.h:33:41: error: 'EPOLLIN' was not declared in this scope; did you mean 'POLL_IN'?
   33 |         Event ev { .fd = fd_, .events = EPOLLIN };
      |                                         ^~~~~~~
      |                                         POLL_IN
In file included from /Users/nikita/Desktop/test/asyncio/test/ut/task_test.cpp:15:
/Users/nikita/Desktop/test/asyncio/include/asyncio/open_connection.h: In function 'asyncio::Task<bool> asyncio::detail::connect(int, const sockaddr*, socklen_t)':
/Users/nikita/Desktop/test/asyncio/include/asyncio/open_connection.h:26:36: error: 'EPOLLOUT' was not declared in this scope; did you mean 'POLL_OUT'?
   26 |     Event ev { .fd = fd, .events = EPOLLOUT };
      |                                    ^~~~~~~~
      |                                    POLL_OUT

In file included from /Users/nikita/Desktop/test/asyncio/test/st/echo_client.cpp:4:
/Users/nikita/Desktop/test/asyncio/include/asyncio/open_connection.h: In function 'asyncio::Task<asyncio::Stream> asyncio::open_connection(std::string_view, uint16_t)':
/Users/nikita/Desktop/test/asyncio/include/asyncio/open_connection.h:54:62: error: 'SOCK_NONBLOCK' was not declared in this scope; did you mean 'O_NONBLOCK'?
   54 |         if ( (sockfd = socket(p->ai_family, p->ai_socktype | SOCK_NONBLOCK, p->ai_protocol)) == -1) {
      |                                                              ^~~~~~~~~~~~~
      |                                                              O_NONBLOCK
In file included from /Users/nikita/Desktop/test/asyncio/test/st/echo_server.cpp:4:
/Users/nikita/Desktop/test/asyncio/include/asyncio/start_server.h: In function 'asyncio::Task<asyncio::Server<CONNECT_CB> > asyncio::start_server(CONNECT_CB, std::string_view, uint16_t)':
/Users/nikita/Desktop/test/asyncio/include/asyncio/start_server.h:87:64: error: 'SOCK_NONBLOCK' was not declared in this scope; did you mean 'SIG_UNBLOCK'?
   87 |         if ( (serverfd = socket(p->ai_family, p->ai_socktype | SOCK_NONBLOCK, p->ai_protocol)) == -1) {
      |                                                                ^~~~~~~~~~~~~
      |                                                                SIG_UNBLOCK
In file included from /Users/nikita/Desktop/test/asyncio/test/ut/task_test.cpp:14:
/Users/nikita/Desktop/test/asyncio/include/asyncio/start_server.h: In function 'asyncio::Task<asyncio::Server<CONNECT_CB> > asyncio::start_server(CONNECT_CB, std::string_view, uint16_t)':
/Users/nikita/Desktop/test/asyncio/include/asyncio/start_server.h:87:64: error: 'SOCK_NONBLOCK' was not declared in this scope; did you mean 'O_NONBLOCK'?
   87 |         if ( (serverfd = socket(p->ai_family, p->ai_socktype | SOCK_NONBLOCK, p->ai_protocol)) == -1) {
      |                                                                ^~~~~~~~~~~~~
      |                                                                O_NONBLOCK
In file included from /Users/nikita/Desktop/test/asyncio/test/ut/task_test.cpp:15:
/Users/nikita/Desktop/test/asyncio/include/asyncio/open_connection.h: In function 'asyncio::Task<asyncio::Stream> asyncio::open_connection(std::string_view, uint16_t)':
/Users/nikita/Desktop/test/asyncio/include/asyncio/open_connection.h:54:62: error: 'SOCK_NONBLOCK' was not declared in this scope; did you mean 'O_NONBLOCK'?
   54 |         if ( (sockfd = socket(p->ai_family, p->ai_socktype | SOCK_NONBLOCK, p->ai_protocol)) == -1) {
      |                                                              ^~~~~~~~~~~~~
      |                                                              O_NONBLOCK

nikita@MacBook-Air-Nikita build % CXX=g++-12 CXXFLAGS=-I/opt/homebrew/Cellar/gcc/12.2.0/include/\ -I/opt/homebrew/Cellar/fmt/9.1.0/include\ -L/opt/homebrew/Cellar/fmt/9.1.0/lib\ -lfmt cmake -DCMAKE_SYSROOT=/Library/Developer/CommandLineTools/SDKs/MacOSX12.3.sdk/ ..
-- The CXX compiler identification is GNU 12.2.0
-- Checking whether CXX compiler has -isysroot
-- Checking whether CXX compiler has -isysroot - yes
-- Checking whether CXX compiler supports OSX deployment target flag
-- Checking whether CXX compiler supports OSX deployment target flag - yes
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /opt/homebrew/bin/g++-12 - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
CMAKE_BUILD_TYPE=
-- Module support is disabled.
-- Version: 8.0.1
-- Build type: 
-- CXX_STANDARD: 20
-- Performing Test has_std_20_flag
-- Performing Test has_std_20_flag - Success
-- Performing Test has_std_2a_flag
-- Performing Test has_std_2a_flag - Success
-- Performing Test SUPPORTS_USER_DEFINED_LITERALS
-- Performing Test SUPPORTS_USER_DEFINED_LITERALS - Success
-- Performing Test FMT_HAS_VARIANT
-- Performing Test FMT_HAS_VARIANT - Success
-- Required features: cxx_variadic_templates
-- Looking for strtod_l
-- Looking for strtod_l - found
-- Configuring done
-- Generating done
-- Build files have been written to: /Users/nikita/Desktop/test/asyncio/build
nikita@MacBook-Air-Nikita build % make -j
[  2%] Built target nanobench
[  5%] Built target fmt
[  6%] Building CXX object CMakeFiles/asyncio.dir/src/event_loop.cpp.o
[ 83%] Built target Catch2
[ 85%] Built target Catch2WithMain
[ 86%] Linking CXX shared library libasyncio.dylib
[ 86%] Built target asyncio
[ 87%] Building CXX object test/pt/CMakeFiles/sched_test.dir/sched_test.cpp.o
[ 88%] Building CXX object test/st/CMakeFiles/hello_world.dir/hello_world.cpp.o
[ 89%] Building CXX object test/st/CMakeFiles/echo_client.dir/echo_client.cpp.o
[ 91%] Building CXX object test/st/CMakeFiles/echo_server.dir/echo_server.cpp.o
[ 92%] Building CXX object test/ut/CMakeFiles/asyncio_ut.dir/task_test.cpp.o
[ 93%] Building CXX object test/ut/CMakeFiles/asyncio_ut.dir/selector_test.cpp.o
[ 94%] Building CXX object test/ut/CMakeFiles/asyncio_ut.dir/result_test.cpp.o
[ 95%] Linking CXX executable hello_world
[ 96%] Linking CXX executable sched_test
[ 96%] Built target hello_world
[ 97%] Linking CXX executable echo_server
[ 97%] Built target sched_test
[ 97%] Built target echo_server
[ 98%] Linking CXX executable echo_client
[ 98%] Built target echo_client
[100%] Linking CXX executable asyncio_ut
[100%] Built target asyncio_ut
nikita@MacBook-Air-Nikita build % sudo make install
Password:
[  3%] Built target fmt
[  5%] Built target asyncio
[  7%] Built target hello_world
[ 10%] Built target echo_client
[ 12%] Built target echo_server
[ 14%] Built target nanobench
[ 91%] Built target Catch2
[ 93%] Built target Catch2WithMain
[ 95%] Built target sched_test
[100%] Built target asyncio_ut
Install the project...
-- Install configuration: ""
CMake Error at cmake_install.cmake:59 (file):
  file cannot create directory: /usr/include/asyncio.  Maybe need
  administrative privileges.


make: *** [install] Error 1

nikita@MacBook-Air-Nikita build % brew install fmt
nikita@MacBook-Air-Nikita test % g++-12 -fdiagnostics-color=always -c asyncio/src/event_loop.cpp -o asyncio/src/event_loop.o --sysroot=/Library/Developer/CommandLineTools/SDKs/MacOSX12.3.sdk/ -I asyncio/include -I/opt/homebrew/Cellar/gcc/12.2.0/include/ -I/opt/homebrew/Cellar/fmt/9.1.0/include -L/opt/homebrew/Cellar/fmt/9.1.0/lib -lfmt --std=c++20 -O3
nikita@MacBook-Air-Nikita test % ar rvs asyncio/src/event_loop.a asyncio/src/event_loop.o
ar: creating archive asyncio/src/event_loop.a
a - asyncio/src/event_loop.o
nikita@MacBook-Air-Nikita test % g++-12 -fdiagnostics-color=always -g test1.cpp -o test1 asyncio/src/event_loop.a --sysroot=/Library/Developer/CommandLineTools/SDKs/MacOSX12.3.sdk/ -I asyncio/include -I/opt/homebrew/Cellar/gcc/12.2.0/include/ -I/opt/homebrew/Cellar/fmt/9.1.0/include -L/opt/homebrew/Cellar/fmt/9.1.0/lib -lfmt --std=c++20 -O3
Undefined symbols for architecture arm64:
  "__ZN3fmt2v97vformatB5cxx11ENS0_17basic_string_viewIcEENS0_17basic_format_argsINS0_20basic_format_contextINS0_8appenderEcEEEE", referenced from:
      __ZNK7asyncio4TaskIiE12promise_type14dump_backtraceEm in ccM2pz6n.o
      __ZNK7asyncio4TaskIbE12promise_type14dump_backtraceEm in ccM2pz6n.o
ld: symbol(s) not found for architecture arm64
collect2: error: ld returned 1 exit status

nikita@MacBook-Air-Nikita test % g++-12 -fdiagnostics-color=always -c asyncio/src/event_loop.cpp -o asyncio/src/event_loop.o --sysroot=/Library/Developer/CommandLineTools/SDKs/MacOSX12.3.sdk/ -I asyncio/include -I/opt/homebrew/Cellar/gcc/12.2.0/include/ -I/opt/homebrew/Cellar/fmt/9.1.0/include -L/opt/homebrew/Cellar/fmt/9.1.0/lib -lfmt --std=c++20 -O3
nikita@MacBook-Air-Nikita test % ar rvs asyncio/src/event_loop.a asyncio/src/event_loop.o 
r - asyncio/src/event_loop.o
nikita@MacBook-Air-Nikita test % g++-12 -fdiagnostics-color=always -g test1.cpp -o test1 asyncio/src/event_loop.a --sysroot=/Library/Developer/CommandLineTools/SDKs/MacOSX12.3.sdk/ -I asyncio/include -I/opt/homebrew/Cellar/gcc/12.2.0/include/ -I/opt/homebrew/Cellar/fmt/9.1.0/include -L/opt/homebrew/Cellar/fmt/9.1.0/lib -lfmt --std=c++20 -O3
nikita@MacBook-Air-Nikita test % ./test1
true

-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Module support is disabled.
-- Version: 8.0.1
-- Build type: 
-- CXX_STANDARD: 20
-- Performing Test has_std_20_flag
-- Performing Test has_std_20_flag - Success
-- Performing Test has_std_2a_flag
-- Performing Test has_std_2a_flag - Success
-- Performing Test SUPPORTS_USER_DEFINED_LITERALS
-- Performing Test SUPPORTS_USER_DEFINED_LITERALS - Success
-- Performing Test FMT_HAS_VARIANT
-- Performing Test FMT_HAS_VARIANT - Success
-- Required features: cxx_variadic_templates
-- Looking for strtod_l
-- Looking for strtod_l - found
CMake Error at CMakeLists.txt:59 (find_package):
  By not providing "Findfmt.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "fmt", but
  CMake did not find one.

  Could not find a package configuration file provided by "fmt" with any of
  the following names:

    fmtConfig.cmake
    fmt-config.cmake

  Add the installation prefix of "fmt" to CMAKE_PREFIX_PATH or set "fmt_DIR"
  to a directory containing one of the above files.  If "fmt" provides a
  separate development package or SDK, be sure it has been installed.


-- Configuring incomplete, errors occurred!
See also "/home/yhc/asyncio/build/CMakeFiles/CMakeOutput.log".```