From: Nathan Myers <ncm@cantrip.org>
Date: Mon, 13 Apr 2026 18:48:22 +0000 (-0400)
Subject: libstdc++: fix allocator_traits<>::allocate_at_least
X-Git-Tag: basepoints/gcc-17~15
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=83e758acdb8fc24acfbbcc5696d052ac0a565d72;p=thirdparty%2Fgcc.git

libstdc++: fix allocator_traits<>::allocate_at_least

allocator_traits<>::allocate_at_least has taken its allocator
by value, incorrectly. This patch makes it take its allocator
by reference, as specified.

libstdc++-v3/ChangeLog:
	* include/bits/alloc_traits.h (allocate_at_least):
	Take allocator argument by reference, per Standard.
---

diff --git a/libstdc++-v3/include/bits/alloc_traits.h b/libstdc++-v3/include/bits/alloc_traits.h
index 2be8ed561d4..e4e0f1608de 100644
--- a/libstdc++-v3/include/bits/alloc_traits.h
+++ b/libstdc++-v3/include/bits/alloc_traits.h
@@ -670,7 +670,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
        *  Returns `a.allocate_at_least(n)`.
       */
       [[nodiscard]] static constexpr auto
-      allocate_at_least(allocator_type __a, size_type __n)
+      allocate_at_least(allocator_type& __a, size_type __n)
 	-> allocation_result<pointer, size_type>
       { return __a.allocate_at_least(__n); }
 #endif