Package: bash Version: 5.1-2+b3 Severity: normal Dear Maintainer,
*** Reporter, please consider answering these questions, where appropriate *** * What led up to the situation? Some bash scripts failed. Here is a script reproducing the bug: ----- #!/bin/bash if [ "$FIRST_LEVEL" != "no" ] ; then export FIRST_LEVEL=no for i in {1..100} ; do $BASH $0 $i || exit done exit fi s="§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§" s="$s$s$s$s$s$s$s$s$s" s="${s:0:256}" prefix=1 for prefix in 1 ; do str="1$s" s1=$(echo "$str") s2=$str if [ "$s1" != "$s2" ] ; then echo $LANG $prefix $1 echo ${s1:256} | od -t x1c echo ${s2:256} | od -t x1c exit 1 fi done ---- With LANG=en_US.utf8 it shows the bug. With LANG=C it produces no error * What exactly did you do (or not do) that was effective (or ineffective)? If i put LANG=C in the script it run as expected. I have tried with upstream bash and found: if I use --without-bash-malloc on configure I get the bug. if I do not use --without-bash-malloc on configure the bug disappears. My gcc: gcc (Debian 10.2.1-6) 10.2.1 20210110 My libc6: Version: 2.31-13 The bug do show at every run, that why I try 100 times in the script. *** End of the template - remove these template lines *** -- System Information: Debian Release: 11.0 APT prefers stable-security APT policy: (500, 'stable-security'), (500, 'proposed-updates'), (500, 'stable') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 5.10.0-8-amd64 (SMP w/4 CPU threads) Locale: LANG=en_GB.utf8, LC_CTYPE=en_GB.utf8 (charmap=UTF-8), LANGUAGE not set Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages bash depends on: ii base-files 11.1 ii debianutils 4.11.2 ii libc6 2.31-13 ii libtinfo6 6.2+20201114-2 Versions of packages bash recommends: ii bash-completion 1:2.11-2 Versions of packages bash suggests: pn bash-doc <none>