Package: bash Version: 5.2.21-2.1+b1 Severity: normal Dear Maintainer,
Using bash 5.2.21-2.1, `printf '%.2f\n' .1` (or any other float value) produces the expected result. After upgrade to bash package 5.2.21-2.1+b1, that same statement outputs either: - 0.00 - -0.00 - a random float value, with a large number of digits to the left of the decimal separator. I noticed this on my laptop and was able to reproduce the bug using a Debian Sid-based podman container of mine: --- 8< ------------------------------------------------------------------------ $ podman run --rm -i kindwolf/unstable-shell:2024080501 <<EOF bash -c "printf '%.2f\n' 0.1" bash -c "printf '%.2f\n' 0.1" bash -c "printf '%.2f\n' 0.1" bash -c "printf '%.2f\n' 0.1" dpkg -l bash apt update > /dev/null 2>&1 && apt install bash > /dev/null 2>&1 dpkg -l bash bash -c "printf '%.2f\n' 0.1" bash -c "printf '%.2f\n' 0.1" bash -c "printf '%.2f\n' 0.1" bash -c "printf '%.2f\n' 0.1" EOF 0.10 0.10 0.10 0.10 Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name Version Architecture Description +++-==============-============-============-================================= ii bash 5.2.21-2.1 amd64 GNU Bourne Again SHell Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name Version Architecture Description +++-==============-=============-============-================================= ii bash 5.2.21-2.1+b1 amd64 GNU Bourne Again SHell 6109438027055380006607751[abridged]65066323432594610641285551911364642996224.00 -584981660093124326370703[abridged]70191893948199565939443678471705365315584.00 5363123171977038804941351[abridged]23734249005160240020871689125814289301504.00 5601186210462057897385212[abridged]67104256981197088027398783407112107065344.00 --- 8< ------------------------------------------------------------------------ I got these results on: - a 2016 Intel CPU - a 2024 AMD CPU and thus assume this regression is not hardware-specific. -- System Information: Debian Release: trixie/sid APT prefers unstable APT policy: (500, 'unstable') Architecture: amd64 (x86_64) Kernel: Linux 6.10.3-amd64 (SMP w/16 CPU threads; PREEMPT) Kernel taint flags: TAINT_OOT_MODULE Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages bash depends on: ii base-files 13.5 ii debianutils 5.20 ii libc6 2.39-6 ii libtinfo6 6.5-2 Versions of packages bash recommends: ii bash-completion 1:2.14.0-1 Versions of packages bash suggests: pn bash-doc <none> -- Configuration Files: /etc/bash.bashrc changed [not included] -- no debconf information
