tree 21c2064691afbe2dfa6fca037c23c462e14d57cc
parent cc87f13181d12a7844e1988fe2d27ead4150d263
author Tom Tromey <tom@tromey.com> 1697398803 -0600
committer Tom Tromey <tom@tromey.com> 1701293384 -0700

Use C++17 void_t

C++17 has void_t and make_void, so gdbsupport/traits.h can be
simplified.

Approved-By: Pedro Alves <pedro@palves.net>