https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106086
Bug ID: 106086
Summary: ICE: trying to capture 'this' in instantiation of
generic lambda
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: ldalessandro at gmail dot com
Target Milestone: ---
Following code generates ICE
#include <array>
#include <concepts>
#include <utility>
template <int>
struct foo {
constexpr auto operator()(std::same_as<int> auto...) const -> int {
return 0;
}
};
template <int _size>
struct bar : foo<_size>
{
constexpr auto operator()(std::array<int, _size> index) const -> int
{
return [&]<std::size_t... i>(std::index_sequence<i...>) {
return foo<_size>::operator()(index[i]...);
}(std::make_index_sequence<_size>());
}
};
bar<1> b;
int i = b({0}); // <-- ERROR
<source>:18:58: internal compiler error: trying to capture 'this' in
instantiation of generic lambda
live: https://godbolt.org/z/TKGWME5aG
A couple of similar, closed bugs show up in the search so I've added them as
see-also. 105788 might be the same but it's listed as "ice-on-invalid-code" and
I'm fairly sure mine is valid (it refers to 100291).
