[gcc r14-12159] libstdc++: Fix -Wdeprecated-declarations warning in <any>

[Jonathan Wakely]

https://gcc.gnu.org/g:0c57a97066ceea1713a66a9ac9bc982c5941d1e7

commit r14-12159-g0c57a97066ceea1713a66a9ac9bc982c5941d1e7
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Fri Nov 14 10:34:21 2025 +0000

    libstdc++: Fix -Wdeprecated-declarations warning in <any>
    
    When GCC is configured with --enable-libstdcxx-pch (which is the
    default) compiling 20_util/ratio/operations/ops_overflow_neg.cc with
    C++23 or later triggers a warning in <any> about std::aligned_storage
    being deprecated.
    
    FAIL: 20_util/ratio/operations/ops_overflow_neg.cc  -std=gnu++23 (test for excess errors)
    Excess errors:
    .../include/any:93: warning: 'template<long unsigned int _Len, long unsigned int _Align> struct std::aligned_storage' is deprecated [-Wdeprecated-declarations]
    
    libstdc++-v3/ChangeLog:
    
            * include/std/any: Add diagnostic pragmas to disable warning
            about std::aligned_storage being deprecated.

Diff:
---
 libstdc++-v3/include/std/any | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libstdc++-v3/include/std/any b/libstdc++-v3/include/std/any
index e4709b1ce046..974805e188f0 100644
--- a/libstdc++-v3/include/std/any
+++ b/libstdc++-v3/include/std/any
@@ -42,6 +42,9 @@
 #include <type_traits>
 #include <bits/utility.h> // in_place_type_t
 
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations" // aligned_storage
+
 namespace std _GLIBCXX_VISIBILITY(default)
 {
 _GLIBCXX_BEGIN_NAMESPACE_VERSION
@@ -661,5 +664,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 _GLIBCXX_END_NAMESPACE_VERSION
 } // namespace std
 
+#pragma GCC diagnostic pop
+
 #endif // __cpp_lib_any
 #endif // _GLIBCXX_ANY