digitalmars.D.bugs - Can't get local time on Windows 2000

k2 (13/13) Aug 24 2005 import std.date;

Walter (5/18) Aug 26 2005 Running on my PC, with XP, it gives:

Carlos Santander (8/35) Aug 26 2005 Walter, this issue has been mentioned before. Check for instance:

Walter (5/10) Aug 27 2005 Lima,

Carlos Santander (8/27) Aug 28 2005 On Windows, the problem is in getLocalTZA(). It's returning 0 here, so

Carlos Santander (7/39) Aug 30 2005 Another thought (even if I haven't tested): if the problem is

Carlos Santander (7/26) Aug 28 2005 Ok, as I hinted in another post, the problem on linux is easy: getUTCtim...
Carlos Santander (4/23) Aug 28 2005 Regarding gdc, the problem seems to be in _d_gnu_cbridge_tza(), but I'm ...

Manfred Nowak (7/8) Aug 26 2005 [...]
Carlos Santander (29/58) Aug 28 2005 Here're some results:

k2 <k2_member pathlink.com> writes:

import std.date;
import std.stdio;

void main()
{
writefln("UTC  :%s", toTimeString(getUTCtime()));
writefln("Local:%s", toTimeString(UTCtoLocalTime(getUTCtime())));
}

---
UTC  :17:07:24 GMT+0000
Local:17:07:24 GMT+0000

Date of my PC is GMT+09:00.
When you test this code, you have to use Windows 2000 or XP, not 9x.
And change to time zone that is no daylight-saving.

Aug 24 2005

"Walter" <newshound digitalmars.com> writes:

"k2" <k2_member pathlink.com> wrote in message
news:dei96c$94k$1 digitaldaemon.com...
 import std.date;
 import std.stdio;

 void main()
 {
 writefln("UTC  :%s", toTimeString(getUTCtime()));
 writefln("Local:%s", toTimeString(UTCtoLocalTime(getUTCtime())));
 }

 ---
 UTC  :17:07:24 GMT+0000
 Local:17:07:24 GMT+0000

 Date of my PC is GMT+09:00.
 When you test this code, you have to use Windows 2000 or XP, not 9x.
 And change to time zone that is no daylight-saving.

Running on my PC, with XP, it gives:

UTC  :10:56:04 GMT-0700
Local:03:56:04 GMT-0700

Aug 26 2005

Carlos Santander <csantander619 gmail.com> writes:

Walter escribi�:
 "k2" <k2_member pathlink.com> wrote in message
 news:dei96c$94k$1 digitaldaemon.com...
 
import std.date;
import std.stdio;

void main()
{
writefln("UTC  :%s", toTimeString(getUTCtime()));
writefln("Local:%s", toTimeString(UTCtoLocalTime(getUTCtime())));
}

---
UTC  :17:07:24 GMT+0000
Local:17:07:24 GMT+0000

Date of my PC is GMT+09:00.
When you test this code, you have to use Windows 2000 or XP, not 9x.
And change to time zone that is no daylight-saving.

 
 
 Running on my PC, with XP, it gives:
 
 UTC  :10:56:04 GMT-0700
 Local:03:56:04 GMT-0700
 
 

Walter, this issue has been mentioned before. Check for instance:

http://www.digitalmars.com/d/archives/digitalmars/D/bugs/189.html
http://www.digitalmars.com/d/archives/25669.html

I tried k2's code on W2K and it was wrong too. My TZ is GMT-0500, Bogot�, Lima, 
Quito.

-- 
Carlos Santander Bernal

Aug 26 2005

"Walter" <newshound digitalmars.com> writes:

"Carlos Santander" <csantander619 gmail.com> wrote in message
news:deo9l4$25i2$1 digitaldaemon.com...
 Walter, this issue has been mentioned before. Check for instance:

 http://www.digitalmars.com/d/archives/digitalmars/D/bugs/189.html
 http://www.digitalmars.com/d/archives/25669.html

 I tried k2's code on W2K and it was wrong too. My TZ is GMT-0500, Bogot�,

Lima,
 Quito.

It doesn't happen on my system. Can you perhaps take a look at std.date.d
and debug it on your system? It's only a few lines of code.

Aug 27 2005

Carlos Santander <csantander619 gmail.com> writes:

Walter escribi�:
 "Carlos Santander" <csantander619 gmail.com> wrote in message
 news:deo9l4$25i2$1 digitaldaemon.com...
 
Walter, this issue has been mentioned before. Check for instance:

http://www.digitalmars.com/d/archives/digitalmars/D/bugs/189.html
http://www.digitalmars.com/d/archives/25669.html

I tried k2's code on W2K and it was wrong too. My TZ is GMT-0500, Bogot�,

 
 Lima,
 
Quito.

 
 
 It doesn't happen on my system. Can you perhaps take a look at std.date.d
 and debug it on your system? It's only a few lines of code.
 
 

On Windows, the problem is in getLocalTZA(). It's returning 0 here, so 
UTCtoLocalTime() fails because it does nothing to the date returned by 
getUTCtime(). I don't know how GetTimeZoneInformation() should work, but I'd 
guess the problem is in that switch in getLocalTZA().

I still have to check on linux.

-- 
Carlos Santander Bernal

Aug 28 2005

Carlos Santander <csantander619 gmail.com> writes:

Carlos Santander escribi�:
 Walter escribi�:
 
 "Carlos Santander" <csantander619 gmail.com> wrote in message
 news:deo9l4$25i2$1 digitaldaemon.com...

 Walter, this issue has been mentioned before. Check for instance:

 http://www.digitalmars.com/d/archives/digitalmars/D/bugs/189.html
 http://www.digitalmars.com/d/archives/25669.html

 I tried k2's code on W2K and it was wrong too. My TZ is GMT-0500, 
 Bogot�,


 Lima,

 Quito.



 It doesn't happen on my system. Can you perhaps take a look at std.date.d
 and debug it on your system? It's only a few lines of code.

 
 On Windows, the problem is in getLocalTZA(). It's returning 0 here, so 
 UTCtoLocalTime() fails because it does nothing to the date returned by 
 getUTCtime(). I don't know how GetTimeZoneInformation() should work, but 
 I'd guess the problem is in that switch in getLocalTZA().
 
 I still have to check on linux.
 

Another thought (even if I haven't tested): if the problem is 
GetTimeZoneInformation(), why not replace the code when it returns 0 with a
call 
to GetSystemTime() and GetLocalTime(), and then get the timezone from that 
difference?

-- 
Carlos Santander Bernal

Aug 30 2005

Carlos Santander <csantander619 gmail.com> writes:

Walter escribi�:
 "Carlos Santander" <csantander619 gmail.com> wrote in message
 news:deo9l4$25i2$1 digitaldaemon.com...
 
Walter, this issue has been mentioned before. Check for instance:

http://www.digitalmars.com/d/archives/digitalmars/D/bugs/189.html
http://www.digitalmars.com/d/archives/25669.html

I tried k2's code on W2K and it was wrong too. My TZ is GMT-0500, Bogot�,

 
 Lima,
 
Quito.

 
 
 It doesn't happen on my system. Can you perhaps take a look at std.date.d
 and debug it on your system? It's only a few lines of code.
 
 

Ok, as I hinted in another post, the problem on linux is easy: getUTCtime() is 
returning the local time, which means gettimeofday() or time() return the local 
time. Maybe there should be getUTCtime() and getLocalTime() in phobos: on
linux, 
getUTCtime() calls getLocalTime() and on Windows it's the opposite. Just an
idea...

-- 
Carlos Santander Bernal

Aug 28 2005

Carlos Santander <csantander619 gmail.com> writes:

Walter escribi�:
 "Carlos Santander" <csantander619 gmail.com> wrote in message
 news:deo9l4$25i2$1 digitaldaemon.com...
 
Walter, this issue has been mentioned before. Check for instance:

http://www.digitalmars.com/d/archives/digitalmars/D/bugs/189.html
http://www.digitalmars.com/d/archives/25669.html

I tried k2's code on W2K and it was wrong too. My TZ is GMT-0500, Bogot�,

 
 Lima,
 
Quito.

 
 
 It doesn't happen on my system. Can you perhaps take a look at std.date.d
 and debug it on your system? It's only a few lines of code.
 
 

Regarding gdc, the problem seems to be in _d_gnu_cbridge_tza(), but I'm not
sure.

-- 
Carlos Santander Bernal

Aug 28 2005

Manfred Nowak <svv1999 hotmail.com> writes:

Walter wrote in news:denlng$1mrb$1 digitaldaemon.com

 Running on my PC, with XP

[...]

Running XP also:

GMT is true localtime
localtime is true localtime +0200

Switching the timezones confirms the behaviour described.

-manfred

Aug 26 2005

Carlos Santander <csantander619 gmail.com> writes:

Walter escribi�:
 "k2" <k2_member pathlink.com> wrote in message
 news:dei96c$94k$1 digitaldaemon.com...
 
import std.date;
import std.stdio;

void main()
{
writefln("UTC  :%s", toTimeString(getUTCtime()));
writefln("Local:%s", toTimeString(UTCtoLocalTime(getUTCtime())));
}

---
UTC  :17:07:24 GMT+0000
Local:17:07:24 GMT+0000

Date of my PC is GMT+09:00.
When you test this code, you have to use Windows 2000 or XP, not 9x.
And change to time zone that is no daylight-saving.

 
 
 Running on my PC, with XP, it gives:
 
 UTC  :10:56:04 GMT-0700
 Local:03:56:04 GMT-0700
 
 

Here're some results:

---gdc 0.15 on Mac---
$ date
Sun Aug 28 15:27:26 ECT 2005

$ ./test
UTC  :01:27:28 GMT+0500
Local:06:27:28 GMT+0500

---gdc 0.15 on Linux---
$ date
dom ago 28 15:27:10 ECT 2005

$ ./test
UTC  :01:27:15 GMT+0500
Local:06:27:15 GMT+0500

---dmd 0.128 on Linux---
$ ./test
UTC  :15:27:13 GMT-0500
Local:10:27:13 GMT-0500

---dmd 0.128 on WinXP---
time

La hora actual es: 15:36:32,94
Escriba una nueva hora:

test

UTC  :20:36:34 GMT+0000
Local:20:36:34 GMT+0000

So, gdc is as lost as it can be. DMD on linux, getUTCtime() returns the local 
time. DMD on Windows, getUTCtime() is correct. UTCtoLocalTime() on linux seems 
to be ok, but not on Windows.

Remember, my TZ is GMT-0500, no CT, no ET, but South America.

-- 
Carlos Santander Bernal

Aug 28 2005

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digitalmars.D.bugs - Can't get local time on Windows 2000