From: Collin Funk <collin.funk1@gmail.com>
Date: Mon, 27 Oct 2025 02:06:08 +0000 (-0700)
Subject: Linux: fix tst-copy_file_range-large test on 32-bit platforms.
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3d20d746c3fc98092b364c198245ae7d2b81ac09;p=thirdparty%2Fglibc.git

Linux: fix tst-copy_file_range-large test on 32-bit platforms.

Since SSIZE_MAX is less than UINT_MAX on 32-bit platforms we must AND
the expression with SSIZE_MAX.

Tested on x86_64 and x86.

Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
---

diff --git a/sysdeps/unix/sysv/linux/tst-copy_file_range-large.c b/sysdeps/unix/sysv/linux/tst-copy_file_range-large.c
index 9eafb8c425..2ad679be6b 100644
--- a/sysdeps/unix/sysv/linux/tst-copy_file_range-large.c
+++ b/sysdeps/unix/sysv/linux/tst-copy_file_range-large.c
@@ -174,9 +174,11 @@ test_size (struct support_fuse *f, off64_t size)
      silently clamped to UINT_MAX & PAGE_MASK.  Accept that return value
      too.  See:
      <https://github.com/torvalds/linux/commit/1e08938c3694f707bb165535df352ac97a8c75c9>.
+     We must AND the expression with SSIZE_MAX for 32-bit platforms where
+     SSIZE_MAX is less than UINT_MAX.
   */
   if (copied != size)
-    TEST_COMPARE (copied, UINT_MAX & ~(getpagesize () - 1));
+    TEST_COMPARE (copied, (UINT_MAX & ~(getpagesize () - 1)) & SSIZE_MAX);
 
   xclose (dest_fd);
   xclose (source_fd);