https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94879
Bug ID: 94879
Summary: coroutines: ICE building folly in captures_temporary,
at cp/coroutines.cc:2707
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: iains at gcc dot gnu.org
Target Milestone: ---
Created attachment 48421
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48421&action=edit
fix under test
The following code should compile, but fails with
Excess errors:
/src-local/cxx-coroutines/gcc/testsuite/g++.dg/coroutines/folly-1.C:48:39:
internal compiler error: in captures_temporary, at cp/coroutines.cc:2707
libbacktrace could not find executable to open
The problem is that we are not properly accounting for proxy variable cases.
====
namespace std {
template <typename a> a b(a &&);
template <typename c> struct d { c e; };
template <typename f, typename> struct coroutine_traits : f {};
template <typename = void> struct coroutine_handle;
template <> struct coroutine_handle<> {};
template <typename> struct coroutine_handle : coroutine_handle<> {};
struct g {};
} // namespace std
class h {};
class i {
i(i &&);
};
namespace ac {
template <typename> class ad {
public:
bool await_ready();
void await_resume();
void await_suspend(std::coroutine_handle<>);
i ae;
};
} // namespace ac
template <typename ab> ac::ad<ab> operator co_await(ab);
class j {
class l {};
public:
std::g initial_suspend();
l final_suspend();
};
class m : public j {
public:
void get_return_object();
void unhandled_exception();
};
class n {
public:
using promise_type = m;
};
std::d<h> k;
void a() {
auto am = k;
[&]() -> n { co_await std::b(am.e); };
}
