https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120565
Bug ID: 120565
Summary: Outputing sys_info, local_info as wchar_t is
ill-formed
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: tkaminsk at gcc dot gnu.org
Target Milestone: ---
The compiler produces hard error from `operator<<` implementation when
sys_info/local_info is printed to wide characters ostream:
```
std::cout << si << " " << li << std::endl; // OK
std::wcout << si << " " << li << std::endl; // ILL-FORMED
```
https://godbolt.org/z/zMevM55rE
Consequently formatting it as wide literals leads to error:
```
(void)std::format("{}", si);
(void)std::format("{}", li);
(void)std::format(L"{}", si);
(void)std::format(L"{}", li);
```
https://godbolt.org/z/vsdhnz67q
