kc3-lang/gnulib/doc/posix-functions/tzset.texi

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• Hash : 82edd0e6
  Author :
  Date : 2017-11-28T14:30:25
  

  Port better to CentOS 5
  
  Problems reported by Tom G. Christensen in:
  https://lists.gnu.org/r/bug-gnulib/2017-11/msg00053.html
  * doc/glibc-functions/strverscmp.texi (strverscmp):
  Document strverscmp bug with glibc 2.9 and earlier.
  * doc/posix-functions/tzset.texi (tzset):
  Document that TZ with angle brackets is POSIX-2001 and later.
  * tests/test-nstrftime.c: Include unistd.h.
  (TZ_ANGLE_BRACKETS_SHOULD_WORK): New macro.
  (TZ): Use it to skip tests with angle brackets in TZ,
  for older systems.
  

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• doc/posix-functions/tzset.texi

• @node tzset
  @section @code{tzset}
  @findex tzset
  
  POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/tzset.html}
  
  Gnulib module: tzset
  
  Portability problems fixed by Gnulib:
  @itemize
  @item
  On native Windows platforms (mingw, MSVC), this function works incorrectly
  when the environment variable @code{TZ} has been set by Cygwin.
  @item
  This function clobbers the buffer used by the localtime function on some
  platforms:
  Solaris 2.6.
  @end itemize
  
  Portability problems not fixed by Gnulib:
  @itemize
  @item
  Native Windows platforms (mingw, MSVC) support only a subset of
  POSIX-specified values for the @env{TZ} environment variable,
  consisting of a time zone abbreviation containing exactly three ASCII
  letters with no daylight saving time or angle brackets, and with no
  support for @code{tz} database settings like
  @code{TZ='America/New_York'}.  Even this subset does not work on
  applications built via the Universal Windows Platform, as it does not
  make environment variables like @env{TZ} available to applications.
  @item
  Older POSIX platforms do not support angle brackets in @env{TZ} values,
  as this feature was added in IEEE Std 1003.1-2001.
  @end itemize
  

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