[Bug ports/23960] New: [Regression]: glibc 2.28 breaks dash on m68k

[glaubitz at physik dot fu-berlin.de]

https://sourceware.org/bugzilla/show_bug.cgi?id=23960

            Bug ID: 23960
           Summary: [Regression]: glibc 2.28 breaks dash on m68k
           Product: glibc
           Version: 2.28
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: ports
          Assignee: unassigned at sourceware dot org
          Reporter: glaubitz at physik dot fu-berlin.de
                CC: adhemerval.zanella at linaro dot org, carlos at redhat dot com,
                    jrtc27 at jrtc27 dot com, schwab@linux-m68k.org
  Target Milestone: ---
            Target: m68k-*-*

On m68k-*-*, upgrading glibc from 2.27 to 2.28 breaks dash in a very obscure
way:

(sid-m68k-sbuild)root@epyc:/build/hp2xx-j13jUj/hp2xx-3.4.4# dash
\u@\h:\w$ cp -a /build/hp2xx-j13jUj/hp2xx-3.4.4/hp-tests/*
/build/hp2xx-j13jUj/hp2xx-3.4.4/debian/hp2xx/usr/share/doc/hp2xx/hp-tests/
/bin/cp: cannot stat '/build/hp2xx-j13jUj/hp2xx-3.4.4/hp-tests/*': No such file
or directory
\u@\h:\w$
(sid-m68k-sbuild)root@epyc:/build/hp2xx-j13jUj/hp2xx-3.4.4# dpkg -i
/tmp/libc6_2.27-8_m68k.deb /tmp/libc-bin_2.27-8_m68k.deb
/tmp/libc-dev-bin_2.27-8_m68k.deb /tmp/multiarch-support_2.27-8_m68k.deb
/tmp/libc6-dev_2.27-8_m68k.deb
dpkg: warning: downgrading libc6:m68k from 2.28-2 to 2.27-8
(Reading database ... 47706 files and directories currently installed.)
Preparing to unpack /tmp/libc6_2.27-8_m68k.deb ...
debconf: unable to initialize frontend: Dialog
debconf: (No usable dialog-like program is installed, so the dialog based
frontend cannot be used. at /usr/share/perl5/Debconf/FrontEnd/Dialog.pm line
76.)
debconf: falling back to frontend: Readline
Unpacking libc6:m68k (2.27-8) over (2.28-2) ...
dpkg: warning: downgrading libc-bin from 2.28-2 to 2.27-8
Preparing to unpack /tmp/libc-bin_2.27-8_m68k.deb ...
Unpacking libc-bin (2.27-8) over (2.28-2) ...
dpkg: warning: downgrading libc-dev-bin from 2.28-2 to 2.27-8
Preparing to unpack .../libc-dev-bin_2.27-8_m68k.deb ...
Unpacking libc-dev-bin (2.27-8) over (2.28-2) ...
dpkg: warning: downgrading multiarch-support from 2.28-2 to 2.27-8
Preparing to unpack .../multiarch-support_2.27-8_m68k.deb ...
Unpacking multiarch-support (2.27-8) over (2.28-2) ...
dpkg: warning: downgrading libc6-dev:m68k from 2.28-2 to 2.27-8
Preparing to unpack /tmp/libc6-dev_2.27-8_m68k.deb ...
Unpacking libc6-dev:m68k (2.27-8) over (2.28-2) ...
Setting up libc6:m68k (2.27-8) ...
debconf: unable to initialize frontend: Dialog
debconf: (No usable dialog-like program is installed, so the dialog based
frontend cannot be used. at /usr/share/perl5/Debconf/FrontEnd/Dialog.pm line
76.)
debconf: falling back to frontend: Readline
Setting up libc-bin (2.27-8) ...
Setting up libc-dev-bin (2.27-8) ...
Setting up multiarch-support (2.27-8) ...
Setting up libc6-dev:m68k (2.27-8) ...
Processing triggers for man-db (2.8.4-3) ...
Not building database; man-db/auto-update is not 'true'.
(sid-m68k-sbuild)root@epyc:/build/hp2xx-j13jUj/hp2xx-3.4.4# dash
\u@\h:\w$ cp -a /build/hp2xx-j13jUj/hp2xx-3.4.4/hp-tests/*
/build/hp2xx-j13jUj/hp2xx-3.4.4/debian/hp2xx/usr/share/doc/hp2xx/hp-tests/
\u@\h:\w$

Since dash is the standard shell in Debian for /bin/sh, this makes packages
fail to build among other issues.

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