Asan build fails

[maxbachmann]

I am running into the following built issue in our code base just with asan enabled on gcc:

common.h:81:25: error: no match for call to '(const experimental::execution::start_detached_t) (std::remove_reference<stdexec::{anonymous}::__sexpr<<lambda closure object>stdexec::<lambda()>()>&>::type)'
   81 |     exec::start_detached(std::move(finalSender));
      |     ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
In file included from ong_test/build/debug/src/database/common.h:11:
  • there are 2 candidates
    install/debug/vendor/include/exec/start_detached.hpp:203:10:
      203 |   struct start_detached_t
          |          ^~~~~~~~~~~~~~~~
    • candidate 1: 'template<class _Sender>  requires (sender_in<_Sender, stdexec::__env::__root_env>) && (__callable<stdexec::apply_sender_t, typename stdexec::__i<_Ok<typename stdexec::__i<_Ok<stdexec::__detail::__if_<__minvocable_q<stdexec::__completion_domain_of_t, stdexec::set_value_t, _Sender, stdexec::env<stdexec::__env::__root_env, stdexec::__env::__fwd<stdexec::__env::__root_env> > > >, stdexec::__q<stdexec::__completion_domain_of_t>, stdexec::__mconst<stdexec::indeterminate_domain<> > > >::__f<stdexec::__detail::__if_<__minvocable_q<stdexec::__completion_domain_of_t, stdexec::set_value_t, _Sender, stdexec::env<stdexec::__env::__root_env, stdexec::__env::__fwd<stdexec::__env::__root_env> > > >, stdexec::__q<stdexec::__completion_domain_of_t>, stdexec::__mconst<stdexec::indeterminate_domain<> > >, stdexec::set_value_t, _Sender, stdexec::env<stdexec::__env::__root_env, stdexec::__env::__fwd<stdexec::__env::__root_env> > > >::__f<typename stdexec::__i<_Ok<stdexec::__detail::__if_<__minvocable_q<stdexec::__completion_domain_of_t, stdexec::set_value_t, _Sender, stdexec::env<stdexec::__env::__root_env, stdexec::__env::__fwd<stdexec::__env::__root_env> > > >, stdexec::__q<stdexec::__completion_domain_of_t>, stdexec::__mconst<stdexec::indeterminate_domain<> > > >::__f<stdexec::__detail::__if_<__minvocable_q<stdexec::__completion_domain_of_t, stdexec::set_value_t, _Sender, stdexec::env<stdexec::__env::__root_env, stdexec::__env::__fwd<stdexec::__env::__root_env> > > >, stdexec::__q<stdexec::__completion_domain_of_t>, stdexec::__mconst<stdexec::indeterminate_domain<> > >, stdexec::set_value_t, _Sender, stdexec::env<stdexec::__env::__root_env, stdexec::__env::__fwd<stdexec::__env::__root_env> > >, experimental::execution::start_detached_t, _Sender>) void experimental::execution::start_detached_t::operator()(_Sender&&) const'
      install/debug/vendor/include/exec/start_detached.hpp:226:10:
        226 |     void operator()(_Sender&& __sndr) const
            |          ^~~~~~~~
      • substitution of deduced template arguments resulted in errors seen above
    • candidate 2: 'template<class _Env, class _Sender>  requires (sender_in<_Sender, decltype(((const stdexec::__env::__as_root_env_fn&)&stdexec::__as_root_env)((__declval<_Env>)()))>) && (__callable<stdexec::apply_sender_t, typename stdexec::__i<_Ok<typename stdexec::__i<_Ok<stdexec::__detail::__if_<__minvocable_q<stdexec::__completion_domain_of_t, stdexec::set_value_t, _Sender, decltype(((const stdexec::__env::__as_root_env_fn&)&stdexec::__as_root_env)((__declval<decltype(((const stdexec::__env::__as_root_env_fn&)&stdexec::__as_root_env)((__declval<_Env>)()))>)()))> >, stdexec::__q<stdexec::__completion_domain_of_t>, stdexec::__mconst<stdexec::indeterminate_domain<> > > >::__f<stdexec::__detail::__if_<__minvocable_q<stdexec::__completion_domain_of_t, stdexec::set_value_t, _Sender, decltype(((const stdexec::__env::__as_root_env_fn&)&stdexec::__as_root_env)((__declval<decltype(((const stdexec::__env::__as_root_env_fn&)&stdexec::__as_root_env)((__declval<_Env>)()))>)()))> >, stdexec::__q<stdexec::__completion_domain_of_t>, stdexec::__mconst<stdexec::indeterminate_domain<> > >, stdexec::set_value_t, _Sender, decltype(((const stdexec::__env::__as_root_env_fn&)&stdexec::__as_root_env)((__declval<decltype(((const stdexec::__env::__as_root_env_fn&)&stdexec::__as_root_env)((__declval<_Env>)()))>)()))> >::__f<typename stdexec::__i<_Ok<stdexec::__detail::__if_<__minvocable_q<stdexec::__completion_domain_of_t, stdexec::set_value_t, _Sender, decltype(((const stdexec::__env::__as_root_env_fn&)&stdexec::__as_root_env)((__declval<decltype(((const stdexec::__env::__as_root_env_fn&)&stdexec::__as_root_env)((__declval<_Env>)()))>)()))> >, stdexec::__q<stdexec::__completion_domain_of_t>, stdexec::__mconst<stdexec::indeterminate_domain<> > > >::__f<stdexec::__detail::__if_<__minvocable_q<stdexec::__completion_domain_of_t, stdexec::set_value_t, _Sender, decltype(((const stdexec::__env::__as_root_env_fn&)&stdexec::__as_root_env)((__declval<decltype(((const stdexec::__env::__as_root_env_fn&)&stdexec::__as_root_env)((__declval<_Env>)()))>)()))> >, stdexec::__q<stdexec::__completion_domain_of_t>, stdexec::__mconst<stdexec::indeterminate_domain<> > >, stdexec::set_value_t, _Sender, decltype(((const stdexec::__env::__as_root_env_fn&)&stdexec::__as_root_env)((__declval<decltype(((const stdexec::__env::__as_root_env_fn&)&stdexec::__as_root_env)((__declval<_Env>)()))>)()))>, experimental::execution::start_detached_t, _Sender, decltype(((const stdexec::__env::__as_root_env_fn&)&stdexec::__as_root_env)((__declval<_Env>)()))>) void experimental::execution::start_detached_t::operator()(_Sender&&, _Env&&) const'
      install/debug/vendor/include/exec/start_detached.hpp:251:10:
        251 |     void operator()(_Sender&& __sndr, _Env&& __env) const

Without enabling asan things work fine. I don't have a minimal example right now but if this can't be reproduced I can probably create one.

[maxbachmann]

    [[nodiscard]]
    constexpr auto operator==(__type_info const &__other) const noexcept -> bool
    {
      return this == &__other || __name_ == __other.__name_;
    }

appears to be the issue. It doesn't like this == &__other when compiling with asan