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* doc/posix-functions/ctime.texi, doc/posix-functions/daylight.texi: * doc/posix-functions/localtime.texi, doc/posix-functions/mktime.texi: * doc/posix-functions/strftime.texi, doc/posix-functions/timezone.texi: * doc/posix-functions/tzname.texi, doc/posix-functions/tzset.texi: * doc/posix-functions/wcsftime.texi: Mention some issues with TZ under MS-Windows.
32 lines
1.0 KiB
Plaintext
32 lines
1.0 KiB
Plaintext
@node tzset
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@section @code{tzset}
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@findex tzset
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POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/tzset.html}
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Gnulib module: tzset
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Portability problems fixed by Gnulib:
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@itemize
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@item
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On native Windows platforms (mingw, MSVC), this function works incorrectly
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when the environment variable @code{TZ} has been set by Cygwin.
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@item
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This function clobbers the buffer used by the localtime function on some
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platforms:
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Solaris 2.6.
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@end itemize
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Portability problems not fixed by Gnulib:
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@itemize
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@item
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Native Windows platforms (mingw, MSVC) support only a subset of
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POSIX-specified values for the @env{TZ} environment variable,
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consisting of a time zone abbreviation containing exactly three ASCII
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letters with no daylight saving time or angle brackets, and with no
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support for @code{tz} database settings like
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@code{TZ='America/New_York'}. Even this subset does not work on
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applications built via the Universal Windows Platform, as it does not
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make environment variables like @env{TZ} available to applications.
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@end itemize
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