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From: Jonathan Wakely <redi@gcc.gnu.org>
To: gcc-cvs@gcc.gnu.org, libstdc++-cvs@gcc.gnu.org
Subject: [gcc r11-9764] libstdc++: Use __cpp_lib_concepts in std::reverse_iterator [PR104098]
Date: Mon,  4 Apr 2022 11:46:55 +0000 (GMT)	[thread overview]
Message-ID: <20220404114655.75BF23858016@sourceware.org> (raw)

https://gcc.gnu.org/g:f6bf63ff3684c28c3b2c4d3a67a42db738d6342d

commit r11-9764-gf6bf63ff3684c28c3b2c4d3a67a42db738d6342d
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Tue Jan 18 15:34:24 2022 +0000

    libstdc++: Use __cpp_lib_concepts in std::reverse_iterator [PR104098]
    
    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.
    
    (cherry picked from commit e13e95bd274148a825bc9527efac49e99080dd64)

Diff:
---
 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 2b7efcbf3c3..79e9959fc58 100644
--- a/libstdc++-v3/include/bits/stl_iterator.h
+++ b/libstdc++-v3/include/bits/stl_iterator.h
@@ -93,7 +93,7 @@ _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,
@@ -150,7 +150,7 @@ _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


                 reply	other threads:[~2022-04-04 11:46 UTC|newest]

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