[Mono-bugs] [Bug 352210] New: Serialization and deserialization of datetime to and from xml, "shifts" the time with the timezone

[bugzilla_noreply at novell.com]

https://bugzilla.novell.com/show_bug.cgi?id=352210


           Summary: Serialization and deserialization of datetime to and
                    from xml, "shifts" the time with the timezone
           Product: Mono: Class Libraries
           Version: SVN
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: System
        AssignedTo: mono-bugs at ximian.com
        ReportedBy: mbd at dbc.dk
         QAContact: mono-bugs at ximian.com
          Found By: ---


Created an attachment (id=189674)
 --> (https://bugzilla.novell.com/attachment.cgi?id=189674)
Testcase - produces different results on Windows and Mono

Description of Problem:

Serializing and deserializating a datetime repeatedly, appears to "shift" the
time with the timezone. See attached (short) program. Expected output as on MS
cli/Windows:

doc   = '<test><date>2007-06-15T10:30:10.5</date></test>'
docm  = '<?xml version="1.0" encoding="utf-8"?><test 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xmlns:xsd="http://www.w3.org/2001/XMLSchema"><date>2007-06-15T10:30:10.5</date></test>'
doc2m = '<?xml version="1.0" encoding="utf-8"?><test 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xmlns:xsd="http://www.w3.org/2001/XMLSchema"><date>2007-06-15T10:30:10.5</date></test>'
doc3m = '<?xml version="1.0" encoding="utf-8"?><test 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xmlns:xsd="http://www.w3.org/2001/XMLSchema"><date>2007-06-15T10:30:10.5</date></test>'

But, output on Mono/Linux:

doc   = '<test><date>2007-06-15T10:30:10.5</date></test>'
docm  = '<?xml version="1.0" encoding="utf-8"?><test 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xmlns:xsd="http://www.w3.org/2001/XMLSchema"><date>2007-06-15T10:30:10.5+02:00</date></test>'
doc2m = '<?xml version="1.0" encoding="utf-8"?><test 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xmlns:xsd="http://www.w3.org/2001/XMLSchema"><date>2007-06-15T08:30:10.5+02:00</date></test>'
doc3m = '<?xml version="1.0" encoding="utf-8"?><test 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xmlns:xsd="http://www.w3.org/2001/XMLSchema"><date>2007-06-15T06:30:10.5+02:00</date></test>'

Note how the time is shifted down with 2 hours for each iteration.


Steps to reproduce the problem:
1. See attached program
2. Run attached program


Actual Results:

doc   = '<test><date>2007-06-15T10:30:10.5</date></test>'
docm  = '<?xml version="1.0" encoding="utf-8"?><test 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xmlns:xsd="http://www.w3.org/2001/XMLSchema"><date>2007-06-15T10:30:10.5+02:00</date></test>'
doc2m = '<?xml version="1.0" encoding="utf-8"?><test 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xmlns:xsd="http://www.w3.org/2001/XMLSchema"><date>2007-06-15T08:30:10.5+02:00</date></test>'
doc3m = '<?xml version="1.0" encoding="utf-8"?><test 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xmlns:xsd="http://www.w3.org/2001/XMLSchema"><date>2007-06-15T06:30:10.5+02:00</date></test>'


Expected Results:

doc   = '<test><date>2007-06-15T10:30:10.5</date></test>'
docm  = '<?xml version="1.0" encoding="utf-8"?><test 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xmlns:xsd="http://www.w3.org/2001/XMLSchema"><date>2007-06-15T10:30:10.5</date></test>'
doc2m = '<?xml version="1.0" encoding="utf-8"?><test 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xmlns:xsd="http://www.w3.org/2001/XMLSchema"><date>2007-06-15T10:30:10.5</date></test>'
doc3m = '<?xml version="1.0" encoding="utf-8"?><test 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xmlns:xsd="http://www.w3.org/2001/XMLSchema"><date>2007-06-15T10:30:10.5</date></test>'


How often does this happen? 

Always


Additional Information:

Not tested on Mono/Windows, only MS/Windows


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