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From: "bruno at clisp dot org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/31080] New: strerrorname_np and strerror don't know about
 ENOSYM and EREMOTERELEASE on Linux/hppa
Date: Tue, 21 Nov 2023 14:50:49 +0000
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X-Bugzilla-Product: glibc
X-Bugzilla-Component: libc
X-Bugzilla-Version: 2.37
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X-Bugzilla-Severity: normal
X-Bugzilla-Who: bruno at clisp dot org
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D31080

            Bug ID: 31080
           Summary: strerrorname_np and strerror don't know about ENOSYM
                    and EREMOTERELEASE on Linux/hppa
           Product: glibc
           Version: 2.37
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: libc
          Assignee: unassigned at sourceware dot org
          Reporter: bruno at clisp dot org
                CC: drepper.fsp at gmail dot com
  Target Milestone: ---

Created attachment 15225
  --> https://sourceware.org/bugzilla/attachment.cgi?id=3D15225&action=3Ded=
it
test case foo.c

The function strerrorname_np is supposed to return non-NULL for all defined
errno values.
https://www.gnu.org/software/libc/manual/html_node/Error-Messages.html

On Linux/hppa, for the errnos with names
  ENOSYM
  EREMOTERELEASE
it returns NULL.

$ grep -rw ENOSYM /usr/include
/usr/include/asm/errno.h:#define ENOSYM         215     /* symbol does not
exist in executable */
$ grep -rw EREMOTERELEASE /usr/include=20
/usr/include/asm/errno.h:#define        EREMOTERELEASE  240     /* Remote p=
eer
released connection */

How to reproduce:
$ gcc -Wall foo.c
$ ./a.out

Expected output:
strerrorname_np (ENOSYM) =3D "ENOSYM"
strerrorname_np (EREMOTERELEASE) =3D "EREMOTERELEASE"
strerror (ENOSYM) =3D Symbol does not exist in executable
strerror (EREMOTERELEASE) =3D Remote peer released connection

Actual output:
strerrorname_np (ENOSYM) =3D (null)
strerrorname_np (EREMOTERELEASE) =3D (null)
strerror (ENOSYM) =3D Unknown error 215
strerror (EREMOTERELEASE) =3D Unknown error 240


Seen on T2-SDE Linux, with glibc 2.37.

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