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asioexec::completion_token: Lvalue Completion Handler Invocation #1566

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Merged
ericniebler merged 1 commit into from
Jul 9, 2025
Merged

asioexec::completion_token: Lvalue Completion Handler Invocation #1566

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2 changes: 1 addition & 1 deletion include/asioexec/completion_token.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -244,7 +244,7 @@ namespace asioexec {
}

template <typename... Args>
void operator()(Args&&... args) && noexcept {
void operator()(Args&&... args) noexcept {
STDEXEC_ASSERT(self_);
{
const std::lock_guard l(self_->m_);
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11 changes: 11 additions & 0 deletions test/asioexec/test_completion_token.cpp
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Expand Up @@ -718,4 +718,15 @@ namespace {
CHECK(lvalue_kind == value_category_receiver::kind::const_lvalue);
}

TEST_CASE(
"Lvalue invocation of the completion handler is supported (for compatibility with Boost.Beast "
"perhaps among others)",
"[asioexec][completion_token]") {
const auto initiating_function = [](auto&& token) {
return asio_impl::async_initiate<decltype(token), void()>([](auto&& h) { h(); }, token);
};
auto op = ::stdexec::connect(initiating_function(completion_token), expect_value_receiver{});
::stdexec::start(op);
}

} // namespace
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