Re: emacs-26, make check failures, mingw64

[Paul Eggert]

On 09/19/2017 12:08 PM, Fabrice Popineau wrote:
> Clearly, the timezone is wrongly formatted.

This is because src/w32.c uses the abbreviation "ZZZ" when a POSIX TZ 
abbreviation is not supported by MS-Windows.

One possible fix would be for src/w32.c to call tzset with a ZZZ...Z 
abbreviation, and then to modify tzname[0] afterwards to have a copy of 
the POSIX-specified abbreviation. src/w32.c could use enough Zs so that 
the tzname[0] created by the MS-Windows library would be long enough and 
could be updated in place rather than worrying about our reallocating it.

If that's too much trouble, another workaround would be to change the 
test case so that it is not run on MS-Windows.