https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96863
Bug ID: 96863
Summary: [11 Regression] ICE: in
output_constructor_regular_field, at varasm.c:5223
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: gcc-bugs at marehr dot dialup.fu-berlin.de
Target Milestone: ---
Hi gcc-team,
the following code ices:
```c++
#include <tuple>
namespace seqan3 {
template <typename, typename = void> struct pipeable_config_element;
template <typename derived_t>
struct pipeable_config_element<derived_t, void> {};
template <typename, typename value_t> struct pipeable_config_element {
value_t value;
};
struct gap_scheme {
int gap = 1;
};
template <typename... configs_t>
struct configuration : std::tuple<configs_t...> {
template <typename derived_t, typename value_t>
constexpr configuration(pipeable_config_element<derived_t, value_t> const) {}
template <typename...> constexpr configuration(std::tuple<> const) {}
template <typename config_element_t>
constexpr auto push_back(config_element_t) const {
return configuration<configs_t..., config_element_t>{std::tuple{}};
}
};
template <typename derived_t, typename value_t>
configuration(pipeable_config_element<derived_t, value_t> const)
-> configuration<derived_t>;
} // namespace seqan3
namespace seqan3::align_cfg {
template <typename gap_scheme_t>
struct gap : pipeable_config_element<gap<gap_scheme_t>, gap_scheme_t> {
gap() = default;
constexpr gap(gap_scheme_t const)
: pipeable_config_element<gap, gap_scheme_t>() {}
};
} // namespace seqan3::align_cfg
namespace seqan3::detail {
struct method_local_tag : pipeable_config_element<method_local_tag> {};
} // namespace seqan3::detail
namespace seqan3::align_cfg {
seqan3::detail::method_local_tag method_local;
template <typename scoring_scheme_t>
struct scoring_scheme : pipeable_config_element<int, void> {
scoring_scheme() = default;
constexpr scoring_scheme(scoring_scheme_t) {};
};
struct aminoacid_scoring_scheme {};
template <typename config_t> struct alignment_fixture { config_t config; };
template <typename config_t>
alignment_fixture(config_t) -> alignment_fixture<config_t>;
inline constexpr auto align_config =
seqan3::configuration{seqan3::align_cfg::method_local}.push_back(
seqan3::align_cfg::gap{seqan3::gap_scheme{}});
static auto aa27_02 = [] {
return alignment_fixture{align_config.push_back(
seqan3::align_cfg::scoring_scheme{aminoacid_scoring_scheme{}})};
}();
} // namespace seqan3::align_cfg
```
https://godbolt.org/z/M4Mh1f
with
> g++-git -std=c++2a
error:
```
ice.cpp:55:1: internal compiler error: in output_constructor_regular_field, at
varasm.c:5223
55 | } // namespace seqan3::align_cfg
| ^
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://bugs.archlinux.org/> for instructions.
```
