time: time.Parse unable to parse timestamps with unusual UTC offsets #26032
Description
$ gotip version
go version devel +d6a27e8edc Sat Jun 23 00:16:14 2018 +0000 linux/amd64
I dumped the time for each of the 425 timezones in my system's tz database in a file and tried to parse the timestamps. I got 17 errors, all caused by time.Parse inability to parse unusual offsets like +0545 (used in Asia/Kathmandu) or +13 (used in Pacific/Fakaofo).
Complete failures log:
Timezone: America/Scoresbysund
zdump time: Sun Jun 24 10:43:46 2018 +00
time.Parse: parsing time "Sun Jun 24 10:43:46 2018 +00": extra text: +00
Timezone: Asia/Colombo
zdump time: Sun Jun 24 16:13:46 2018 +0530
time.Parse: parsing time "Sun Jun 24 16:13:46 2018 +0530": extra text: +0530
Timezone: Asia/Kabul
zdump time: Sun Jun 24 15:13:46 2018 +0430
time.Parse: parsing time "Sun Jun 24 15:13:46 2018 +0430": extra text: +0430
Timezone: Asia/Kathmandu
zdump time: Sun Jun 24 16:28:46 2018 +0545
time.Parse: parsing time "Sun Jun 24 16:28:46 2018 +0545": extra text: +0545
Timezone: Asia/Tehran
zdump time: Sun Jun 24 15:13:46 2018 +0430
time.Parse: parsing time "Sun Jun 24 15:13:46 2018 +0430": extra text: +0430
Timezone: Asia/Yangon
zdump time: Sun Jun 24 17:13:46 2018 +0630
time.Parse: parsing time "Sun Jun 24 17:13:46 2018 +0630": extra text: +0630
Timezone: Atlantic/Azores
zdump time: Sun Jun 24 10:43:46 2018 +00
time.Parse: parsing time "Sun Jun 24 10:43:46 2018 +00": extra text: +00
Timezone: Australia/Eucla
zdump time: Sun Jun 24 19:28:46 2018 +0845
time.Parse: parsing time "Sun Jun 24 19:28:46 2018 +0845": extra text: +0845
Timezone: Australia/Lord_Howe
zdump time: Sun Jun 24 21:13:46 2018 +1030
time.Parse: parsing time "Sun Jun 24 21:13:46 2018 +1030": extra text: +1030
Timezone: Indian/Cocos
zdump time: Sun Jun 24 17:13:46 2018 +0630
time.Parse: parsing time "Sun Jun 24 17:13:46 2018 +0630": extra text: +0630
Timezone: Pacific/Apia
zdump time: Sun Jun 24 23:43:46 2018 +13
time.Parse: parsing time "Sun Jun 24 23:43:46 2018 +13": extra text: +13
Timezone: Pacific/Chatham
zdump time: Sun Jun 24 23:28:46 2018 +1245
time.Parse: parsing time "Sun Jun 24 23:28:46 2018 +1245": extra text: +1245
Timezone: Pacific/Enderbury
zdump time: Sun Jun 24 23:43:46 2018 +13
time.Parse: parsing time "Sun Jun 24 23:43:46 2018 +13": extra text: +13
Timezone: Pacific/Fakaofo
zdump time: Sun Jun 24 23:43:46 2018 +13
time.Parse: parsing time "Sun Jun 24 23:43:46 2018 +13": extra text: +13
Timezone: Pacific/Kiritimati
zdump time: Mon Jun 25 00:43:46 2018 +14
time.Parse: parsing time "Mon Jun 25 00:43:46 2018 +14": extra text: +14
Timezone: Pacific/Marquesas
zdump time: Sun Jun 24 01:13:46 2018 -0930
time.Parse: parsing time "Sun Jun 24 01:13:46 2018 -0930": extra text: -0930
Timezone: Pacific/Tongatapu
zdump time: Sun Jun 24 23:43:46 2018 +13
time.Parse: parsing time "Sun Jun 24 23:43:46 2018 +13": extra text: +13
https://gist.github.com/ALTree/de33561c1cc00ac46e2e9e6d6cca52fe