https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99827
Bug ID: 99827 Summary: [coroutines] co_await on function receiving initializer list of shared pointers causes ICE Product: gcc Version: 11.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: inf17092 at lehre dot dhbw-stuttgart.de Target Milestone: --- When using coroutines and awaiting the return value of a function receiving an initializer list of shared pointers, the tree check fails with the following error: internal compiler error: tree check: expected record_type or union_type or qual_union_type, have array_type in build_special_member_call, at cp/call.c:10143 When using the promise type `promise::promise_type`, the following function produces the error. In this case, `func1` receives the initializer list of shared pointers and returns an awaitable. promise task() { co_await func1({ std::make_shared<int>(1) }); } You can find a short sample file demonstrating the bug and the full error output here: https://godbolt.org/z/489EcWdb3. The bug also occurs with version 10.2.0-5 on my local Ubuntu system but not with version 10.2.0 on godbolt.org.