[Bug c++/118143] New: coroutines: co_await & co_return in ({ ... }) syntax cause ICE, internal compiler error: in gimplify_expr

[sunsijie at buaa dot edu.cn via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118143

            Bug ID: 118143
           Summary: coroutines: co_await & co_return in ({ ... }) syntax
                    cause ICE, internal compiler error: in gimplify_expr
           Product: gcc
           Version: 14.2.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: sunsijie at buaa dot edu.cn
  Target Milestone: ---

```

#include <coroutine>

struct Task {
    struct promise_type {
        promise_type() = default;
        Task get_return_object() { return
{std::coroutine_handle<promise_type>::from_promise(*this)}; }
        void return_void() {}
        std::suspend_always initial_suspend() { return {}; }
        std::suspend_always final_suspend() noexcept { return {}; }
        void unhandled_exception() {}
    };

    std::coroutine_handle<> handle_ = nullptr;
};

struct Await {
    bool await_ready() { return true; }
    void await_suspend(std::coroutine_handle<>) {}
    void await_resume() {}
};

Task test() {
    ({
        co_await Await{};
        co_return;
    });
    co_return;
}

```

0x2031cbc internal_error(char const*, ...)
        ???:0
0x77895f fancy_abort(char const*, int, char const*)
        ???:0
0xc4f914 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        ???:0
0xc4dadd gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        ???:0
0xc4f914 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        ???:0
0xc4dadd gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        ???:0
0xc4dadd gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        ???:0
0xc4f8fe gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        ???:0
0xc4dadd gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        ???:0
0xc4f8fe gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        ???:0
0xc4dadd gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        ???:0
0xc4f8fe gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        ???:0
0xc4dadd gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        ???:0
0xc4f8fe gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        ???:0
0xc51ede gimplify_body(tree_node*, bool)
        ???:0
0xc522a0 gimplify_function_tree(tree_node*)
        ???:0
0xabb457 cgraph_node::analyze()
        ???:0
0xabe7c1 symbol_table::finalize_compilation_unit()
        ???:0