From: Jonathan Wakely <jwakely@redhat.com>
To: libstdc++@gcc.gnu.org, gcc-patches@gcc.gnu.org
Subject: [committed] libstdc++: Use __cpp_lib_concepts in std::reverse_iterator [PR104098]
Date: Tue, 18 Jan 2022 16:33:37 +0000 [thread overview]
Message-ID: <20220118163337.3799987-1-jwakely@redhat.com> (raw)
Tested powerpc64le-linux, pushed to trunk.
We should not assume that std::iter_value_t etc. are defined
unconditionally for C++20 mode.
libstdc++-v3/ChangeLog:
PR libstdc++/104098
* include/bits/stl_iterator.h (reverse_iterator): Check
__cpp_lib_concepts instead of __cplusplus.
---
libstdc++-v3/include/bits/stl_iterator.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/libstdc++-v3/include/bits/stl_iterator.h b/libstdc++-v3/include/bits/stl_iterator.h
index 549a391d04d..266ddd02a78 100644
--- a/libstdc++-v3/include/bits/stl_iterator.h
+++ b/libstdc++-v3/include/bits/stl_iterator.h
@@ -94,7 +94,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
* @{
*/
-#if __cplusplus > 201703L && __cpp_lib_concepts
+#if __cpp_lib_concepts
namespace __detail
{
// Weaken iterator_category _Cat to _Limit if it is derived from that,
@@ -155,7 +155,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
public:
typedef _Iterator iterator_type;
typedef typename __traits_type::pointer pointer;
-#if __cplusplus <= 201703L
+#if ! __cpp_lib_concepts
typedef typename __traits_type::difference_type difference_type;
typedef typename __traits_type::reference reference;
#else
--
2.31.1
reply other threads:[~2022-01-18 16:42 UTC|newest]
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