https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104788
Bug ID: 104788
Summary: ICE
Product: gcc
Version: 11.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: raffael at casagrande dot ch
Target Milestone: ---
The following simple program produces an internal compiler error when compiled
with "-std=c++20" (problem seems to be fixed in current trunk 12.0!):
#include <algorithm>
#include <vector>
template <class MESH_FACTORY>
class OpenFoamReader {
public:
OpenFoamReader() {
auto z = []() {
struct Connection {
std::uint32_t end_point;
auto operator<=>(const Connection&) const noexcept ->
std::strong_ordering = default;
};
std::vector<Connection> connections;
// sort connections
std::ranges::sort(connections);
};
}
};
int main() {
OpenFoamReader<int> reader;
}
================================================
Error message:
================================================
In file included from
/opt/compiler-explorer/gcc-11.2.0/include/c++/11.2.0/bits/move.h:57,
from
/opt/compiler-explorer/gcc-11.2.0/include/c++/11.2.0/bits/stl_pair.h:59,
from
/opt/compiler-explorer/gcc-11.2.0/include/c++/11.2.0/utility:70,
from
/opt/compiler-explorer/gcc-11.2.0/include/c++/11.2.0/algorithm:60,
from <source>:1:
/opt/compiler-explorer/gcc-11.2.0/include/c++/11.2.0/type_traits: In
instantiation of 'constexpr const bool std::is_invocable_v<std::ranges::less&,
OpenFoamReader<int>::OpenFoamReader()::<lambda()>::Connection&,
OpenFoamReader<int>::OpenFoamReader()::<lambda()>::Connection&>':
/opt/compiler-explorer/gcc-11.2.0/include/c++/11.2.0/concepts:338:25:
required by substitution of 'template<class _Range, class _Comp, class _Proj>
requires (random_access_range<_Range>) &&
(sortable<decltype(std::ranges::__cust_access::__begin((declval<_Container&>)())),
_Comp, _Proj>) constexpr std::ranges::borrowed_iterator_t<_Range>
std::ranges::__sort_fn::operator()(_Range&&, _Comp, _Proj) const [with _Range =
std::vector<OpenFoamReader<int>::OpenFoamReader()::<lambda()>::Connection,
std::allocator<OpenFoamReader<int>::OpenFoamReader()::<lambda()>::Connection>
>&; _Comp = std::ranges::less; _Proj = std::identity]'
<source>:16:24: required from 'OpenFoamReader<MESH_FACTORY>::OpenFoamReader()
[with MESH_FACTORY = int]'
<source>:22:25: required from here
/opt/compiler-explorer/gcc-11.2.0/include/c++/11.2.0/type_traits:3001:27:
internal compiler error: Segmentation fault
3001 | inline constexpr bool is_invocable_v = is_invocable<_Fn,
_Args...>::value;
| ^~~~~~~~~~~~~~
0x1786229 internal_error(char const*, ...)
???:0
0x806d30 stmts_are_full_exprs_p()
???:0
0x700b81 cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
???:0
0x7e02f3 instantiate_decl(tree_node*, bool, bool)
???:0
0x70a613 maybe_instantiate_decl(tree_node*)
???:0
0x7f4881 lookup_and_finish_template_variable(tree_node*, tree_node*, int)
???:0
0x6c532a constraints_satisfied_p(tree_node*, tree_node*)
???:0
0x7f7487 fn_type_unification(tree_node*, tree_node*, tree_node*, tree_node*
const*, unsigned int, tree_node*, unification_kind_t, int, conversion**, bool,
bool)
???:0
0x695371 build_op_call(tree_node*, vec<tree_node*, va_gc, vl_embed>**, int)
???:0
0x80ae32 finish_call_expr(tree_node*, vec<tree_node*, va_gc, vl_embed>**, bool,
bool, int)
???:0
0x7f2e86 tsubst_lambda_expr(tree_node*, tree_node*, int, tree_node*)
???:0
0x7e02f3 instantiate_decl(tree_node*, bool, bool)
???:0
0x7fb69b instantiate_pending_templates(int)
???:0
0x70cd4d c_parse_final_cleanups()
???:0
