[Aimmath-developers] [ aimmath-Bugs-1017564 ] year out of range error

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Bugs item #1017564, was opened at 2004-08-27 20:54
Message generated for change (Comment added) made by gregg0
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 8
Submitted By: Gustav W Delius (gustav_delius)
Assigned to: Greg Gamble (gregg0)
Summary: year out of range error

Initial Comment:
When trying to create a new quiz I get an error "Year 
out of range (must be >= 2000): 1970". 
This is on a Windows 2000 machine.

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>Comment By: Greg Gamble (gregg0)
Date: 2004-08-30 04:47

Message:
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I finally discovered how it was that I was not experiencing the
error. Essentially, it came down to our lack of summer time.
In filling in some of the entries the Date constructor uses a
default time (0 as you observed, which translates to 1 January,
1970), so that the `Date/DaysSince1Jan2000` function I'd
introduced needed to actually be `Date/DaysSince1Jan1970`.
I've replaced the former function by the latter now, and that
bug should be gone now. I'll do some more thorough testing
tomorrow, but I'm confident everything is working properly now.
Sorry, it was my goof after all.

Regards,
Greg

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Comment By: Gustav W Delius (gustav_delius)
Date: 2004-08-28 19:46

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I found the bug: in the Date constructor the 'SetTimeZone' 
method is called before the 'Raw' field is set. 
The 'SetTimeZone' method therefore assumes that the raw 
time is 0, which leads to the "Year out of range" error.

While I managed to find the bug I don't feel up to the task of 
fixing it properly. I'll leave that to Greg.

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Comment By: Greg Gamble (gregg0)
Date: 2004-08-28 18:16

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`Date/CurrentRawDate`() is used. This calls an internal
Maple function: iolib(25)
which apparently (couldn't find any documentation) returns
the number of
seconds since 00:00:00, Jan 1, 1970 ... it agrees with the 
UNIX date +"%s"
A moment ago this function gave: 1093688092   ... for me.
Maybe you could check that your Maple responds with a
similarly sized number
when you give it:  iolib(25);

Regards,
Greg

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Comment By: Gustav W Delius (gustav_delius)
Date: 2004-08-28 02:25

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The date that Windows displays is the correct one. How does 
AiM get the date from my computer?

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Comment By: Greg Gamble (gregg0)
Date: 2004-08-28 01:00

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This message is generated by `Date/DaysSince1Jan2000` in
Date.mpl
when called with a year < 2000. The only way I can see that
the error
message could be generated is if your computer's date was
set to before
the year 2000. Is that the case? ... maybe to avoid software
license expiries
or something.

Regards,
Greg

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Comment By: Gustav W Delius (gustav_delius)
Date: 2004-08-27 21:44

Message:
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..and by the way: I am using Maple 8

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