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From: "inf17092 at lehre dot dhbw-stuttgart.de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/99827] New: [coroutines] co_await on function receiving
 initializer list of shared pointers causes ICE
Date: Tue, 30 Mar 2021 12:35:32 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99827

            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 vers=
ion
10.2.0-5 on my local Ubuntu system but not with version 10.2.0 on godbolt.o=
rg.=