https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110394
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2023-06-24
Ever confirmed|0 |1
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I am almost think this is a bug in your code.
Take:
auto wait_handle = tc::g_postbox->wait(
"UpdateInputs"sv, [=](const msgpack::object& obj) -> bool {
....
});
The temporary for tc::postbox::acceptor_type will end its lifetime at the end
of that statement but tc::g_postbox->wait stores it off into m_awaiters.
And then gets poped off with:
wait_handle.await();
You can fix this via extending the temporary via:
```
tc::postbox::acceptor_type t = [=](const msgpack::object& obj) -> bool {
auto [rcv_index, rcv_value] = obj.as<std::tuple<int, uint32_t>>();
tc::tracef(M64MSG_VERBOSE, "index = {}", index);
if (rcv_index != index)
return false;
keys->Value = rcv_value;
return true;
};
auto wait_handle = tc::g_postbox->wait(
"UpdateInputs"sv, t);
```
Note `-fsantize=address` should catch this at runtime too.
