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41 lines
1.2 KiB
41 lines
1.2 KiB
From 405bdec807a7b530173ebf018843c4552dfa20c9 Mon Sep 17 00:00:00 2001
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From: Rosen Penev <rosenp@gmail.com>
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Date: Sat, 6 Jun 2020 11:33:55 -0700
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Subject: [PATCH] use std::string_view when available
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There's a standard C++ macro to check for its existence.
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libstdc++ from GCC makes it available under C++17 and up. libcxx from
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LLVM makes it available everywhere.
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Signed-off-by: Rosen Penev <rosenp@gmail.com>
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---
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ext/lmdb-safe/lmdb-safe.hh | 7 +++----
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pdns/dnsdistdist/views.hh | 7 +++----
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2 files changed, 6 insertions(+), 8 deletions(-)
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diff --git a/ext/lmdb-safe/lmdb-safe.hh b/ext/lmdb-safe/lmdb-safe.hh
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index 056a6cd823..16d150fa7d 100644
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--- a/ext/lmdb-safe/lmdb-safe.hh
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+++ b/ext/lmdb-safe/lmdb-safe.hh
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@@ -10,8 +10,9 @@
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#include <string.h>
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#include <mutex>
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-// apple compiler somehow has string_view even in c++11!
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-#if __cplusplus < 201703L && !defined(__APPLE__)
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+#ifdef __cpp_lib_string_view
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+using std::string_view;
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+#else
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#include <boost/version.hpp>
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#if BOOST_VERSION >= 106100
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#include <boost/utility/string_view.hpp>
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@@ -20,8 +21,6 @@ using boost::string_view;
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#include <boost/utility/string_ref.hpp>
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using string_view = boost::string_ref;
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#endif
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-#else // C++17
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-using std::string_view;
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#endif
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