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Date:	Mon, 13 May 2013 17:36:51 +0200
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: mktime loop
Message-ID:	<20130513153651.GD5045@calimero.vinschen.de>
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References:	<5244063b734b165baf34bdebaff0aca5 AT denis-excoffier DOT org>
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On May 13 09:08, Denis Excoffier wrote:
> Hello,
> 
> The following program (see below) is working properly under plain
> 1.7.18. With all the snapshots afterwards (including
> the current one 20130508), it fails after day=19, looping forever
> (it seems). I use XP.
> 
> Regards,
> 
> Denis Excoffier.
> 
> % cat foo.c
> #include <stdio.h>
> #include <time.h>
> 
> int
> main ()
> {
>   int day;
>   // date --date='@2147483647' +%Y-%m-%d gives 2038-01-19
>   for ( day = 1 ; day <= 31 ; ++day ) {
>     struct tm tm;
>     time_t now;
>     tm.tm_year = 2038 - 1900;
>     tm.tm_mon = 1 - 1;
>     tm.tm_mday = day; // 19, 20
>     tm.tm_hour = 0;
>     tm.tm_min = 0;
>     tm.tm_sec = 0;
>     now = mktime (&tm);
>     fprintf (stderr, "day=%d\n", day);
>   };
>   return 0;
> }

Thanks for the testcase.  This looks like the new BSD code I added
lately assumes that the datatype time_t is 8 bytes, not 4 byte as on 32
bit Cygwin.  That's just a hunch I take from the fact that your testcase
works fine on 64 bit Cygwin and only hangs on 32 bit Cygwin.  Oh well.
I'll investigate further...


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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