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[Bug libc/2865] New: time/tzfile.c doesn't set timezone correctly

method __tzfile_default in tzfile.c does not set "__use_tzfile = 0" at the end
of the method.

This leads to the problem, that the global variable "timezone" is not set
correctly if the env variable TZ is set e.g. to JKL3:10PNM4:40 (with the first
part being standard time and the second daylight saving time)
Then, timezone is set to a nonsense value of 18000 instead of the expected 11400

For a demonstration see the attached program.

Note: this bug blocks LSB conformance (LSB runtime tests T.ctime_X 1,
T.localtim_X 1, T.mktime_X 1)

Bug found in debian sarge system (libc 2.3.2) but is not yet fixed in CVS.

           Summary: time/tzfile.c doesn't set timezone correctly
           Product: glibc
           Version: 2.4
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
        AssignedTo: drepper at redhat dot com
        ReportedBy: mdittmar at linux-ag dot de
                CC: glibc-bugs at sources dot redhat dot com

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