https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115046
Bug ID: 115046
Summary: meta-recursion when apply join_view with as_const_view
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: hewillk at gmail dot com
Target Milestone: ---
I seriously doubt this is a more practical example of LWG 3986 since join_view
has a std::optional member to store the iterator, but I'm not sure about
whether this is a language bug or a library bug since MSVC doesn't have the
issue:
#include <ranges>
#include <list>
int main() {
std::list<std::string_view> l;
auto r = l | std::views::chunk(3)
| std::views::transform(std::views::as_const)
| std::views::join;
for (auto&& elem : r) {
// infinite meta-recursion
}
}
https://godbolt.org/z/Morx4voT8
Reduction is a nightmare, so I only do it when I have time.
