https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98056
melg melg <public.melg8 at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |public.melg8 at gmail dot com
--- Comment #26 from melg melg <public.melg8 at gmail dot com> ---
I think i found regression of this bug. Or maybe similar type of bug, but with
slightly different reproducible. Using std::vector as container and std::string
as elements of vector, when you take std::vector<std::string> as argument by
value to the coroutine and on call side initialize that argument with single
std::string value using initializer list - you get ICE.
Affected versions (tested on godbolt.org):
x86-64 gcc:
- 11.1, 11.2, 11.4
- 12.3
- 13.1, 13.2
Luckily 14.1 version of gcc doesn't have this error.
Minimal reproducer online: https://godbolt.org/z/drnf3PWsY
Compilation flags: "-std=c++20"
Minimal reproducer source code:
#include <coroutine>
#include <vector>
#include <string>
auto use_vector_of_strings(std::vector<std::string> values) {
struct awaitable {
bool await_ready() { return false; }
void await_suspend(std::coroutine_handle<> h) {
h.resume();
}
void await_resume() {}
};
return awaitable{};
}
struct task {
struct promise_type {
task get_return_object() { return {}; }
std::suspend_never initial_suspend() { return {}; }
std::suspend_never final_suspend() noexcept { return {}; }
void return_void() {}
void unhandled_exception() {}
};
};
task string_test_1() {
std::string test = "hello";
co_await use_vector_of_strings({test}); // ICE here.
}
task string_test_2() {
std::string test = "hello";
std::vector<std::string> container{test}; // No problem here.
co_await use_vector_of_strings(container); // No problem here.
}
int main() {
string_test_1();
string_test_2();
}
ICE error message:
<source>: In function 'task string_test_1()':
<source>:29:1: internal compiler error: in build_special_member_call, at
cp/call.cc:11093
29 | }
| ^
0x1ce62bc internal_error(char const*, ...)
???:0
0x71ee4d fancy_abort(char const*, int, char const*)
???:0
0x10f5a63 walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*,
tree_node* (*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*))
???:0
0x10f5a63 walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*,
tree_node* (*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*))
???:0
