Bug#849621: libc-bin: 'zdump -c' can't properly handle leap-second insertion at last second of year

["Stephen Dowdy \(resonance\)" <sdowdy@ucar.edu>]

Package: libc-bin
Version: 2.19-18+deb8u7
Severity: minor
Tags: upstream

Dear Maintainer,

using year limit boundaries of 2016 minimum (inclusive) and 2017 maximum (non-inclusive), then including 2018 maximum, yields:

$ zdump -V -c2016,2017 right/America/Denver | grep ':60 '
$ zdump -V -c2016,2018 right/America/Denver | grep ':60 '
right/America/Denver  Sat Dec 31 23:59:60 2016 UT = Sat Dec 31 16:59:60 2016 MST isdst=0 gmtoff=-25200

$ zdump -V -c2016,2017 right/Etc/UTC | grep ':60 '
$ zdump -V -c2016,2018 right/Etc/UTC | grep ':60 '
right/Etc/UTC  Sat Dec 31 23:59:60 2016 UT = Sat Dec 31 23:59:60 2016 UTC isdst=0 gmtoff=0


that extra leap second is getting ignored as being in 2016.

Certainly no big deal, and i added 'upstream' tag, as this is likely something missed in the upstream sources.

thanks,
--stephen


-- System Information:
Debian Release: 8.6
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'proposed-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.16.0-4-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US, LC_CTYPE=en_US (charmap=ISO-8859-1)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages libc-bin depends on:
ii  libc6  2.19-18+deb8u7

libc-bin recommends no packages.

libc-bin suggests no packages.

-- Configuration Files:
/etc/ld.so.conf changed [not included]

-- no debconf information