[gcc r12-6797] libstdc++: Fix condition for __cpp_lib_shared_ptr_arrays

[Jonathan Wakely]

https://gcc.gnu.org/g:2da1ef06ff4bee961f51321dee9d0866c7ebb1cc

commit r12-6797-g2da1ef06ff4bee961f51321dee9d0866c7ebb1cc
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Fri Jan 21 14:56:08 2022 +0000

    libstdc++: Fix condition for __cpp_lib_shared_ptr_arrays
    
    I changed the preprocessor condition from <= to < in r12-6574 which
    meant the macro was not defined by <version> for C++17.
    
    libstdc++-v3/ChangeLog:
    
            * include/std/version (__cpp_lib_shared_ptr_arrays): Fix
            condition for C++17 definition.

Diff:
---
 libstdc++-v3/include/std/version | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libstdc++-v3/include/std/version b/libstdc++-v3/include/std/version
index e3afe57c782..64759c9bf24 100644
--- a/libstdc++-v3/include/std/version
+++ b/libstdc++-v3/include/std/version
@@ -51,7 +51,7 @@
 
 #if _GLIBCXX_HOSTED
 # define __cpp_lib_allocator_traits_is_always_equal 201411
-#if __cplusplus < 201703L // N.B. updated value in C++20
+#if __cplusplus <= 201703L // N.B. updated value in C++20
 # define __cpp_lib_shared_ptr_arrays 201611L
 #endif
 #endif