A. Jiang 27e686c788
[libc++] Verify that LWG4140 is implemented (#128624)
According to the commit history, the constructors removed by LWG4140
have never been added to libc++.

Existence of non-public or deleted default constructor is observable,
this patch tests that there's no such default constructor at all.
2025-03-06 11:12:17 +08:00
..