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Re: [Bug-gnulib] new module: timegm

From: Simon Josefsson
Subject: Re: [Bug-gnulib] new module: timegm
Date: Mon, 01 Sep 2003 16:07:19 +0200
User-agent: Gnus/5.1003 (Gnus v5.10.3) Emacs/21.3.50 (gnu/linux)

Bruno Haible <address@hidden> writes:

> Simon Josefsson wrote:
>> How about a timegm module?
> What do you think about the implementation at
> http://lists.debian.org/deity/2002/deity-200204/msg00082.html
> ?

It looks more likely to be reliable (setenv/tzset/mktime doesn't sound
like a good approach in a threaded environment).  I'll test it.

>> +/* Convert calendar time to simple time, inverse of mktime. */
>> +extern time_t timegm (struct tm *tm);
> What about the tm_isdst field? Is the caller expected to set it or not?
> The comments should say so. I'm asking because the first thing the glibc
> implementation of timegm does is to erase the tm->tm_isdst field.

I don't know.  The timegm man page and the libc manual are silent on
the issue.

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