[bug-diffutils] bug#51228: bug#51228: Incorrect timezone in unified diff on Solaris?

[Paul Eggert]

On 10/15/21 6:55 AM, Vladimir Marek wrote:

> I am not entirely sure where is nstrftime.c coming from, so I'm
> reporting the issue here.

Thanks for reporting it. Although nstrftime.c comes from Gnulib, this is 
a diffutils bug: the 0 diffutils passes to nstrftime stands for 
Universal Time (UT), whereas local time is wanted. This bug is not 
triggered on GNU/Linux or the BSDs, which have tm_gmtoff in their 
struct tm.

I installed the attached patch into diffutils. Please give it a try, as 
the patch you sent mishandles the case when today's UT offset differs 
from the UT offset in effect when the file was last modified (e.g., due 
to a daylight-saving change).

0001-diff-fix-timezone-bug-on-Solaris.patch
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