https://gcc.gnu.org/g:0d46cee2fe38b9a1aa576c8031ed22d298d88954
commit r15-9628-g0d46cee2fe38b9a1aa576c8031ed22d298d88954
Author: Dhruv Chawla <dhr...@nvidia.com>
Date: Tue Apr 8 01:01:24 2025 -0700
libstdc++: Add missing feature-test macro in <memory>
Per version.syn#2, <memory> is required to define
__cpp_lib_addressof_constexpr as 201603L.
Bootstrapped and tested on aarch64-linux-gnu.
Signed-off-by: Dhruv Chawla <dhr...@nvidia.com>
libstdc++-v3/ChangeLog:
* include/std/memory: Define __glibcxx_want_addressof_constexpr.
* testsuite/20_util/headers/memory/version.cc: Test for macro
value.
(cherry picked from commit 0e65fef8717f404cf9c85bff51bf87d534f87828)
Diff:
---
libstdc++-v3/include/std/memory | 1 +
libstdc++-v3/testsuite/20_util/headers/memory/version.cc | 4 ++++
2 files changed, 5 insertions(+)
diff --git a/libstdc++-v3/include/std/memory b/libstdc++-v3/include/std/memory
index 99f542dcddc6..78a1250d29a1 100644
--- a/libstdc++-v3/include/std/memory
+++ b/libstdc++-v3/include/std/memory
@@ -97,6 +97,7 @@
# include <bits/out_ptr.h>
#endif
+#define __glibcxx_want_addressof_constexpr
#define __glibcxx_want_allocator_traits_is_always_equal
#define __glibcxx_want_assume_aligned
#define __glibcxx_want_atomic_shared_ptr
diff --git a/libstdc++-v3/testsuite/20_util/headers/memory/version.cc
b/libstdc++-v3/testsuite/20_util/headers/memory/version.cc
index c82c9a018e0a..946955dd2123 100644
--- a/libstdc++-v3/testsuite/20_util/headers/memory/version.cc
+++ b/libstdc++-v3/testsuite/20_util/headers/memory/version.cc
@@ -6,3 +6,7 @@
#if __cpp_lib_allocator_traits_is_always_equal != 201411L
# error "Feature-test macro __cpp_lib_allocator_traits_is_always_equal has
wrong value in <version>"
#endif
+
+#if __cpp_lib_addressof_constexpr != 201603L
+# error "Feature-test macro __cpp_lib_addressof_constexpr has wrong value in
<version>"
+#endif
