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Date: Tue, 02 Sep 2014 13:32:29 +0200
From: Marco Atzeri <marco DOT atzeri AT gmail DOT com>
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To: cygwin AT cygwin DOT com
Subject: Re: mktime call hangs on Cygwin 1.7.30, Windows 7 32 bit
References: <20140902111045 DOT GA5860 AT ashu-win7>
In-Reply-To: <20140902111045.GA5860@ashu-win7>
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On 02/09/2014 13:10, Alexey Shumkin wrote:
> Prelude.
> I use "self-compiled" Git (v2.x) on Cygwin (v1.7.30).
> Sometimes Git v2.0.4 hung while performing
>    git prune --expire 2.weeks.ago
>
> I have investigated while debugging that `mktime` call hung.
> But that was an avoidable bug (skip prune - and all is ok). So, I've not
> reported it.
>
> But after updating Git to v2.1.0
>    git commit --amend -C HEAD --date=''
> hangs, too. And now it is the often used operation by me.
> So, I've made a simple example (copied from Git sources) to reproduce
> the error.
>
> $ cat cygwin-mktime-bug.c
> #include <time.h>
> #include <string.h>
> #include <stdio.h>
>
> int main(int argc, char **argv)
> {
>       struct tm tm;
>
>       memset(&tm, 0, sizeof(tm));
>       tm.tm_year = -1;
>       tm.tm_mon = -1;
>       tm.tm_mday = -1;
>       tm.tm_isdst = -1;
>       tm.tm_hour = -1;
>       tm.tm_min = -1;
>       tm.tm_sec = -1;
>
>       printf("Working...\n");
>       time_t temp_time = mktime(&tm);
 >       printf("Worked");
-       printf("Worked");
-       printf("Worked\n");
> }
>
> $ gcc cygwin-mktime-bug.c -o cygwin-mktime-bug -I/usr/include -g
> $ ./cygwin-mktime-bug.exe
> Working...
>
no issue on my side.

$ LIMIT=1000
$ for ((a=1 ; a <= LIMIT ; a++ )); do ./cygwin-mktime-bug.exe ; done

Working...
Worked
...
Working...
Worked
$


>
> So, there is a question: how to fix it?
> Nota bene: I do not want to use Cygwin x64 (there were no exim when I've tested it).

32 bit here.

$ uname -svr
CYGWIN_NT-6.1-WOW64 1.7.32(0.274/5/3) 2014-08-13 23:03

please update to 1.7.32 and than follows:
https://cygwin.com/problems.html

Regards
Marco

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