SUMMARY


STEPS TO REPRODUCE
1. Copy code from examples https://www.man7.org/linux/man-pages/man2/copy_file_range.2.html
2. Compile with clang
3. valgrind --verbose --log-file=valgrind-out.txt ./exec a.txt b.txt

OBSERVED RESULT
copy_file_range: Function not implemented


EXPECTED RESULT
Nothing

SOFTWARE/OS VERSIONS
NAME="Ubuntu"
VERSION="20.04.2 LTS (Focal Fossa)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 20.04.2 LTS"
VERSION_ID="20.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=focal
UBUNTU_CODENAME=focal


valgrind                              1:3.15.0-1ubuntu9.1


ADDITIONAL INFORMATION

--2193160-- WARNING: unhandled amd64-linux syscall: 326
==2193160==    at 0x4B6A14A: copy_file_range (copy_file_range.c:29)
==2193160==    by 0x10A7A8: main (main.cpp:39)
--2193160-- You may be able to write your own handler.
--2193160-- Read the file README_MISSING_SYSCALL_OR_IOCTL.
--2193160-- Nevertheless we consider this a bug.  Please report
--2193160-- it at http://valgrind.org/support/bug_reports.html.