Bug 923 - tzname[] vector returns wrong time zone name to sendmail and pine
Summary: tzname[] vector returns wrong time zone name to sendmail and pine
Status: CLOSED DUPLICATE of bug 2112
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: glibc
Version: 5.2
Hardware: i386
OS: Linux
Target Milestone: ---
Assignee: Cristian Gafton
QA Contact:
Depends On:
TreeView+ depends on / blocked
Reported: 1999-01-22 21:40 UTC by igorl+rh
Modified: 2008-05-01 15:37 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 1999-05-15 22:25:39 UTC

Attachments (Terms of Use)

Description igorl+rh 1999-01-22 21:40:27 UTC
On a CST system (/etc/localtime -> ../usr/share/zoneinfo/US/
Central), the tzname[] vector returns "EST" instead of "CST."

This problem is visible wehn sendmail-8.9.2 taps the tzname[]
external for its Date: and Received: header lines. I have not
yet perused pine source code to see what it does, but the
behavior seems similar.

Within sendmail, the files conf.h and arpadate.c define and
reference "extern char *tzname[]." I have not yet found what
and how sets this array. Yet, the problem seems to be
withinthe LInuz setup rather than within sendmail.

Thanks, igor

Comment 1 igorl+rh 1999-01-23 20:03:59 UTC
Here's a little program (from Gregory Shapiro of Sendmail Inc.) that
demonstrates the problem:

#include <stdio.h>
#include <time.h>

main(int argc, char **argv)
	time_t t = time(NULL);
	struct tm *lt;
	extern char *tzname[];

	lt = localtime(&t);
	printf("TZ_TM_ZONE: %s\n", lt->tm_zone);
	printf("TZ_TZNAME: %s\n", tzname[lt->tm_isdst]);
	if (lt->tm_isdst > 0)
		printf("Fixed TZ_TZNAME: %s\n", tzname[1]);
	else if (lt->tm_isdst == 0)
		printf("Fixed TZ_TZNAME: %s\n", tzname[0]);
		printf("Fixed TZ_TZNAME: Timezone not available\n");

Comment 2 Anonymous 1999-03-01 18:17:59 UTC
This problem also shows up in a RHL 5.2 CST/CDT machine using
qmail as the MTA and pine 4.04/4.05/4.10 as the MUA.

Could this be due to the glibc "enhancements?"

Comment 3 Jeff Johnson 1999-05-15 22:19:59 UTC
What version of glibc are you using? (try "rpm -q glibc")What version of glibc are you using? (try "rpm -q glibc")

Comment 4 Jeff Johnson 1999-05-15 22:25:59 UTC
*** This bug has been marked as a duplicate of 2112 ***

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