Package: bc
Version: 1.07.1-2+b2
Severity: normal
Dear Maintainer,
* What led up to the situation?
Instead of a normal calculator I use bc for quick calculations. Often
between different calculations I press return a few times to space
things out (and to focus the mind).
* What outcome did you expect instead?
It seems this functionality does not work anymore. Historically if you
run bc and press enter, newlines are shown on screen scrolling the
output up one line. However now pressing enter does nothing (unless you
are doing an actual calculation).
I expect to be able to press return at a bc(1) prompt and for a newline
to scroll the output up.
* What I found out.
I think I have narrowed the issue down to the libreadline.so.7 to
libreadline.so.8 update that hit the mirrors on the 22nd July 2019.
If two chroots are created from the 22nd July, one at 03:59 and one at
08:59 with the following commands:
$ sudo debootstrap --variant=minbase --include=bc bullseye
bullseye-20190722T035916Z
https://snapshot.debian.org/archive/debian/20190722T035916Z/
$ sudo debootstrap --variant=minbase --include=bc bullseye
bullseye-20190722T085948Z
https://snapshot.debian.org/archive/debian/20190722T085948Z/
The first chroot works as expected however the second does not, I tested
as below:
$ sudo chroot bullseye-20190722T035916Z/ bc
$ sudo chroot bullseye-20190722T085948Z/ bc
Looking at the libraries linked and comparing them shows that
libreadline changed version from 7 to 8.
$ ldd bullseye-20190722T035916Z/usr/bin/bc | awk '{print $1}' > 1
$ ldd bullseye-20190722T085948Z/usr/bin/bc | awk '{print $1}' > 2
$ diff -u 1 2
--- 1 2019-08-02 13:45:33.594849157 +0100
+++ 2 2019-08-02 13:45:36.334827465 +0100
@@ -1,5 +1,5 @@
linux-vdso.so.1
-libreadline.so.7
+libreadline.so.8
libncurses.so.6
libtinfo.so.6
libc.so.6
I'm not sure what to try next.
Kind Regards
--
Tom
-- System Information:
Debian Release: bullseye/sid
APT prefers testing
APT policy: (800, 'testing'), (700, 'unstable'), (600, 'experimental'), (500,
'unstable-debug'), (500, 'testing-debug'), (1, 'experimental-debug')
Architecture: amd64 (x86_64)
Foreign Architectures: armel, armhf, i386
Kernel: Linux 4.19.0-5-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8),
LANGUAGE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages bc depends on:
ii libc6 2.28-10
ii libncurses6 6.1+20190713-1
ii libreadline8 8.0-2
ii libtinfo6 6.1+20190713-1
bc recommends no packages.
bc suggests no packages.
-- no debconf information
