From 17d8156ac89e3b8c6aa19a14e0dd723bd65e0902 Mon Sep 17 00:00:00 2001
From: "Niall Douglas (s [underscore] sourceforge {at} nedprod [dot] com)"
 <spamtrap@nedprod.com>
Date: Mon, 8 Mar 2021 18:42:47 +0000
Subject: Suppress warning on Linux.

---
 include/llfio/v2.0/detail/impl/posix/file_handle.ipp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/include/llfio/v2.0/detail/impl/posix/file_handle.ipp b/include/llfio/v2.0/detail/impl/posix/file_handle.ipp
index 144f8192..cf84c3db 100644
--- a/include/llfio/v2.0/detail/impl/posix/file_handle.ipp
+++ b/include/llfio/v2.0/detail/impl/posix/file_handle.ipp
@@ -591,7 +591,10 @@ result<file_handle::extent_pair> file_handle::clone_extents_to(file_handle::exte
           See https://github.com/openzfs/zfs/issues/11697 for more.
           */
           char b;
-          (void) ::pread(_v.fd, &b, 1, end);
+          if(-1 == ::pread(_v.fd, &b, 1, end))
+          {
+            return posix_error();
+          }
         }
         start = lseek64(_v.fd, end, SEEK_DATA);
 #else
-- 
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