[gcc/devel/ranger] libstdc++: Define __cpp_lib_three_way_comparison for freestanding

[Aldy Hernandez <aldyh@gcc.gnu.org>]

https://gcc.gnu.org/g:a2dcb56c9443d1211e14889bd0c2c21360d54cdb

commit a2dcb56c9443d1211e14889bd0c2c21360d54cdb
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Thu Apr 23 21:39:33 2020 +0100

    libstdc++: Define __cpp_lib_three_way_comparison for freestanding
    
    The <compare> header is always supported, not only for hosted configs.
    
            * include/std/version (__cpp_lib_three_way_comparison): Define for
            freestanding builds.

Diff:
---
 libstdc++-v3/ChangeLog           | 5 +++++
 libstdc++-v3/include/std/version | 6 +++---
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index b5dc52c66d2..52535464984 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,8 @@
+2020-04-23  Jonathan Wakely  <jwakely@redhat.com>
+
+	* include/std/version (__cpp_lib_three_way_comparison): Define for
+	freestanding builds.
+
 2020-04-23  Iain Sandoe  <iain@sandoe.co.uk>
 
 	* include/std/coroutine: Update the inline namespace to __n4861.
diff --git a/libstdc++-v3/include/std/version b/libstdc++-v3/include/std/version
index d06d60c9106..1beb9aa938e 100644
--- a/libstdc++-v3/include/std/version
+++ b/libstdc++-v3/include/std/version
@@ -184,6 +184,9 @@
 #endif
 #define __cpp_lib_is_nothrow_convertible 201806L
 #define __cpp_lib_remove_cvref 201711L
+#if __cpp_impl_three_way_comparison >= 201907L && __cpp_lib_concepts
+# define __cpp_lib_three_way_comparison 201907L
+#endif
 #define __cpp_lib_type_identity 201806L
 #define __cpp_lib_unwrap_ref 201811L
 
@@ -215,9 +218,6 @@
 #define __cpp_lib_span 202002L
 #define __cpp_lib_ssize 201902L
 #define __cpp_lib_starts_ends_with 201711L
-#if __cpp_impl_three_way_comparison >= 201907L && __cpp_lib_concepts
-# define __cpp_lib_three_way_comparison 201907L
-#endif
 #define __cpp_lib_to_address 201711L
 #define __cpp_lib_to_array 201907L
 #endif