> /dev/stderr 2>&-

[Reuben]

$ echo cat /dev/stderr > bug
$ bash bug 2>&-
cat /dev/stderr

calling bash script 2>&- on linux
seems to make /dev/stderr refer to script,
though &2 seems unaffected.
using 2>&- inside script does not trigger this bug.
i assume it is a bug and not 'historical compatibility'.
the bug does not seem to appear in bash on openbsd.
the bug does not seem to appear in dash or pdksh.

---

$ bash -version
GNU bash, version 5.2.26(1)-release (x86_64-redhat-linux-gnu)
Copyright (C) 2022 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>

This is free software; you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

$ uname -srvmo
Linux 6.7.6-200.fc39.x86_64 #1 SMP PREEMPT_DYNAMIC Fri Feb 23 18:27:29
UTC 2024 x86_64 GNU/Linux

---

$ bash -version
GNU bash, version 5.1.4(1)-release (x86_64-pc-linux-gnu)
Copyright (C) 2020 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>

This is free software; you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Linux 5.10.0-28-amd64 #1 SMP Debian 5.10.209-2 (2024-01-31) x86_64
GNU/Linux


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