[ wxwindows-Bugs-1719182 ] Memory leaks when MFC with wxWidgets Debug DLL and using PCH

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Bugs item #1719182, was opened at 2007-05-15 12:22
Message generated for change (Comment added) made by vadz
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Category: wxMSW specific
Group: None
>Status: Closed
Resolution: None
Priority: 5
Private: No
Submitted By: Mareq (mareqq)
Assigned to: Julian Smart (juliansmart)
Summary: Memory leaks when MFC with wxWidgets Debug DLL and using PCH

Initial Comment:
Take a look at
http://wxforum.shadonet.com/viewtopic.php?t=14031&highlight=

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>Comment By: Vadim Zeitlin (vadz)
Date: 2007-12-13 18:15

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Seems to have been fixed, thanks to Kenneth and troelsk!

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Comment By: troelsk (troelsk)
Date: 2007-12-13 17:15

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Good! Perhaps you could close this bug.
Regards



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Comment By: Mareq (mareqq)
Date: 2007-12-13 15:15

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After reading the article it is absolutely clear :).
Thank you.

BTW: In my case, it was about mfc80[u][d].lib.

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Comment By: Mareq (mareqq)
Date: 2007-12-13 15:14

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After reading the article it is absolutely clear :).
Thank you.

BTW: In my case, it was about mfc80[u][d].lib.

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Comment By: troelsk (troelsk)
Date: 2007-12-13 13:00

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Kenneth Porter found a fix, in your project (or samples/mfc) just list
mfc42ud.lib (Unicode)  or mfc42d.lib (Ansi) as the first link module. This
makes the 'leaks' go away.
http://article.gmane.org/gmane.comp.lib.wxwindows.general/57271


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Comment By: troelsk (troelsk)
Date: 2007-05-16 13:46

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No so good. 
I saw these 'leaks' too with MSVC6 (bug #1554728). 
The leaks appeared to go away with MSVC2003. 
Now it looks like they're back, with MSVC2005. 
(It'll be causing much agony here, when we eventually upgrade from
MSVC2003 to 2005)

>I think these are not real memory leaks

I agree. It looks like a bug in the MSVC2005 debugger.


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Comment By: Mareq (mareqq)
Date: 2007-05-16 08:43

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Re 2.:

I have checked it. These memory leaks are shown also when running
samples/mfc.

Steps to reproduce:
1. Install wxMSW-2.8.3.
2. Open build/msw/wx_dll.dsw with VS2005. Files will be converted to
VS2005 format (wx_dll.sln, *.vcproj, ...).
3. Build wxMSW as "DLL Debug".
4. Open samples/mfc/mfc.dsw with VS2005 (again converted to VS2005
format).
5. Build and run mfc sample as "DLL Debug".
6. When the sample finishes, a lot of memory leaks are shown in the trace
window of VS2005.

I think these are not real memory leaks, but some interference of MFC and
wxWidgets that causes the memory leak detector does not work correctly
(because of _DEBUG_NEW or new or ... macro redefinition). I am not sure if
this is the reason.

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Comment By: Mareq (mareqq)
Date: 2007-05-15 15:28

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1.
Sorry, I made mistake when setting the category (I posted more Win CE
related issues, so this mistake occured).

2.
I will check it.


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Comment By: troelsk (troelsk)
Date: 2007-05-15 12:49

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- Did you really mean category WinCE? (probably not)
- Do you see the leak when running samples/mfc? (probably not - in this
case please close this bug again)

/Troels


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