[Bug 278378] man(1) ignores corrupt gzip'd manual pages

From: <bugzilla-noreply_at_freebsd.org>
Date: Mon, 15 Apr 2024 12:59:11 UTC 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=278378

            Bug ID: 278378
           Summary: man(1) ignores corrupt gzip'd manual pages
           Product: Base System
           Version: 15.0-CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: bin
          Assignee: bugs@FreeBSD.org
          Reporter: wosch@FreeBSD.org

man(1) ignores errors from gzip if a file is corrupt. You can see the errors
from gzip on stderr, but the exit status of man(1) will be zero.

How to repeat:

$ touch /tmp/bla.1.gz

$ /usr/bin/man /tmp/bla.1.gz >/dev/null; echo $?
gzcat: /tmp/bla.1.gz: unexpected end of file
gzcat: /tmp/bla.1.gz: unexpected end of file
gzcat: /tmp/bla.1.gz: unexpected end of file
0

In case of an error, man(1) should exit with a non-zero status.

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