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Re: [Bug-gnulib] strftime merge from Emacs

From: Paul Eggert
Subject: Re: [Bug-gnulib] strftime merge from Emacs
Date: 05 Jun 2003 10:36:32 -0700
User-agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3

Jim Meyering <address@hidden> writes:

> At worst, (assuming this is solaris-specific) change this code
> to be used only on __sun__ systems.

I'm a bit leery of that, as I suspect that the bug came from SVR4.

> At best, someone will write an autoconf-run-test to detect the
> real problem.  Does anyone have details of how tzset misbehaves?

The bug is that you can't do something like this:

  tm = localtime (&t);
  tzset ();
  year = tm->tm_year; etc.

because tzset modifies *tm.

Sorry, I still don't see why we need to add a "!defined(WINDOWSNT)"
here.  That is, I don't see why the code doesn't work correctly on
Windows NT without the change.  There is a slight performance penalty,
but it's not worth worrying about.  Perhaps the real problem is that
some Windows port defines HAVE_TZNAME when it shouldn't?

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