From: Jonathan Wakely <jwakely@redhat.com>
Date: Fri, 14 Nov 2025 12:16:05 +0000 (+0000)
Subject: libstdc++: Add comment to __cpp_lib_bitset preprocessor condition
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7a5a92a643b883f3ad3c959045f2cd2d1552c1a6;p=thirdparty%2Fgcc.git

libstdc++: Add comment to __cpp_lib_bitset preprocessor condition

libstdc++-v3/ChangeLog:

	* include/std/bitset: Add comment to feature test macro test.
---

diff --git a/libstdc++-v3/include/std/bitset b/libstdc++-v3/include/std/bitset
index 6fd32657863..ece35936909 100644
--- a/libstdc++-v3/include/std/bitset
+++ b/libstdc++-v3/include/std/bitset
@@ -1012,7 +1012,7 @@ _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
 	}
 #endif // HOSTED
 
-#ifdef __cpp_lib_bitset
+#ifdef __cpp_lib_bitset // C++ >= 23
       /**
        *  Use a subset of a string view.
        *  @param  __s  A `string_view` of a sequence of `0` and `1` characters.