From: Tom Tromey <tom@tromey.com>
To: gdb-patches@sourceware.org
Cc: Tom Tromey <tom@tromey.com>
Subject: [PATCH 7/7] Use C++17 void_t
Date: Mon, 16 Oct 2023 17:02:46 -0600 [thread overview]
Message-ID: <20231016230527.1820819-8-tom@tromey.com> (raw)
In-Reply-To: <20231016230527.1820819-1-tom@tromey.com>
C++17 has void_t and make_void, so gdbsupport/traits.h can be
simplified.
---
gdbsupport/traits.h | 11 +----------
1 file changed, 1 insertion(+), 10 deletions(-)
diff --git a/gdbsupport/traits.h b/gdbsupport/traits.h
index f6bb64911be..277e117bead 100644
--- a/gdbsupport/traits.h
+++ b/gdbsupport/traits.h
@@ -43,15 +43,6 @@
namespace gdb {
-/* Pre C++14-safe (CWG 1558) version of C++17's std::void_t. See
- <http://en.cppreference.com/w/cpp/types/void_t>. */
-
-template<typename... Ts>
-struct make_void { typedef void type; };
-
-template<typename... Ts>
-using void_t = typename make_void<Ts...>::type;
-
/* Implementation of the detection idiom:
- http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4502.pdf
@@ -79,7 +70,7 @@ struct detector
/* Implementation of the detection idiom (positive case). */
template<typename Default, template<typename...> class Op, typename... Args>
-struct detector<Default, void_t<Op<Args...>>, Op, Args...>
+struct detector<Default, std::void_t<Op<Args...>>, Op, Args...>
{
using value_t = std::true_type;
using type = Op<Args...>;
--
2.41.0
next prev parent reply other threads:[~2023-10-16 23:06 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-16 23:02 [PATCH 0/7] More C++17 Updates Tom Tromey
2023-10-16 23:02 ` [PATCH 1/7] Use C++17 [[fallthrough]] attribute Tom Tromey
2023-10-16 23:17 ` John Baldwin
2023-10-19 20:23 ` Tom Tromey
2023-10-17 8:53 ` Luis Machado
2023-10-19 20:23 ` Tom Tromey
2023-10-16 23:02 ` [PATCH 2/7] Switch to -Wimplicit-fallthrough=5 Tom Tromey
2023-10-16 23:02 ` [PATCH 3/7] Enable some C++14 code in array-view.h Tom Tromey
2023-10-16 23:02 ` [PATCH 4/7] Use try_emplace in index-write.c Tom Tromey
2023-10-17 8:56 ` Pedro Alves
2023-10-17 9:30 ` Lancelot SIX
2023-10-19 20:24 ` Tom Tromey
2023-10-16 23:02 ` [PATCH 5/7] Rely on C++17 <new> in new-op.cc Tom Tromey
2023-10-16 23:02 ` [PATCH 6/7] Rely on copy elision in scope-exit.h Tom Tromey
2023-10-16 23:02 ` Tom Tromey [this message]
2023-10-17 9:06 ` [PATCH 0/7] More C++17 Updates Pedro Alves
2023-10-19 20:26 ` Tom Tromey
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