Function get localtime in binary built by nix work incorrectly

[thongpv87]

Describe the bug
Function get localtime in binary built by nix work incorrectly

To Reproduce
Steps to reproduce the behavior:
I have written a simple project at https://github.com/thongpv87/nix-test . The code in main.cpp set the TZ environment variable then call function localtime and print the timezone. Compile this file with g++, nix-build, g++ in docker image by dockerfile, docker image from dockerTools and run these binary/image and compare the result.

My host system time zone is Singapore. The current time in Singapore when I run this is 23:48:40. The output when run with binary from nix-build is:

TZ=(null)
Current local time and date: Thu Jun  4 23:48:25 2020
 
TZ=America/New_York
Current local time and date: Thu Jun  4 15:48:25 2020
 
TZ=Asia/Tokyo
Current local time and date: Thu Jun  4 15:48:25 2020
 
TZ=Europe/London
Current local time and date: Thu Jun  4 15:48:25 2020

More output: https://pastebin.com/t8FAixyL

Expected behavior

TZ=(null)
Current local time and date: Thu Jun  4 23:48:40 2020
 
TZ=America/New_York
Current local time and date: Thu Jun  4 11:48:40 2020
 
TZ=Asia/Tokyo
Current local time and date: Fri Jun  5 00:48:40 2020
 
TZ=Europe/London
Current local time and date: Thu Jun  4 16:48:40 2020

Notify maintainers

Metadata

• system: "x86_64-linux"
• host os: Linux 4.15.0-70-generic, Ubuntu, 16.04.6 LTS (Xenial Xerus)
• multi-user?: no
• sandbox: yes
• version: nix-env (Nix) 2.3.4
• channels(gitlab-runner): "nixpkgs-20.09pre213040.f77e057cda6"
• channels(root): "nixpkgs-20.09pre213040.f77e057cda6"
• channels(tpham): "home-manager, nixpkgs-20.09pre228165.00df2371122"
• nixpkgs: /home/tpham/.nix-defexpr/channels/nixpkgs

[matthewbauer]

This looks like the same issue as #65415.

[stale]

I marked this as stale due to inactivity. → More info

[aanderse]

Any update on this?

[fpletz]

Duplicate of #65415.