From 1cb53dbd1ceff0db89093567f2c859114b5a748b Mon Sep 17 00:00:00 2001
From: Sy Brand <sy.brand@fastly.com>
Date: Tue, 3 Mar 2026 15:23:37 +0000
Subject: [PATCH] Guard against non-linux/FreeBSD systems for copy_file_range

---
 libcxx/src/filesystem/operations.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libcxx/src/filesystem/operations.cpp b/libcxx/src/filesystem/operations.cpp
index 745db87ce3736..c1834a61b55de 100644
--- a/libcxx/src/filesystem/operations.cpp
+++ b/libcxx/src/filesystem/operations.cpp
@@ -41,7 +41,7 @@
 #include <time.h>
 
 // since Linux 4.5 and FreeBSD 13, but the Linux libc wrapper is only provided by glibc >= 2.27 and musl
-#if _LIBCPP_GLIBC_PREREQ(2, 27) || _LIBCPP_HAS_MUSL_LIBC || defined(__FreeBSD__)
+#if (defined(__linux__) && (_LIBCPP_GLIBC_PREREQ(2, 27) || _LIBCPP_HAS_MUSL_LIBC)) || defined(__FreeBSD__)
 #  define _LIBCPP_FILESYSTEM_USE_COPY_FILE_RANGE
 #endif