October 2003 - Wine-devel - list.winehq.org

question about copyright and code, is this legal?
by Jonathan Wilson 03 Oct '03

03 Oct '03

Say I have a piece of code, x (which is copyright) which always returns the same output for a given input (e.g. a function that implements a math formula or a function that retrieves some value from an internal data table stored in the dll or whatever) Lets then say that I havent seen this code (either origonal C code or disassembly) Say I was to write a program that calls this function for all valid inputs and prints the inputs and outputs. If I was to take the output of this program and, without refering to the origonal function or the dump program in any way (i.e. using just the "truth table" for the function) generate a function that, for any given input, generates the same output as the original, have I broken the law?

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Re: Misc bugs found by using valgrind
by Shachar Shemesh 02 Oct '03

02 Oct '03

Michael Günnewig wrote: >Changelog: > Fixed use of uninitialized memory and wrong buffersize (found by valgrind). > > > Michael > > > >------------------------------------------------------------------------ > >--- dlls/avifil32/api.c.SAV 2003-09-20 16:14:45.000000000 +0200 >+++ dlls/avifil32/api.c 2003-09-20 14:46:10.000000000 +0200 >@@ -1009,7 +1009,7 @@ > szFilter[0] = 0; > szFilter[1] = 0; > >- wszFilter = (LPWSTR)GlobalAllocPtr(GHND, cbFilter); >+ wszFilter = (LPWSTR)GlobalAllocPtr(GHND, cbFilter * sizeof(WCHAR)); > if (wszFilter == NULL) > return AVIERR_MEMORY; > > What are we doing to prevent integer overflow on these allocations? Shouldn't we, perhaps, use some wrapper that checks that "cbFilter*sizeof(WCHAR)" is not greater than "MAXINT"? Shachar -- Shachar Shemesh Open Source integration consultant Home page & resume - http://www.shemesh.biz/

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Regression testing framework
by Jakob Eriksson 02 Oct '03

02 Oct '03

The feature requests come in faster now and I also have less time to work on this stuff for the moment, so I release my little baby into the wild: Please apply: http://vmlinux.org/jakov/Wine/programs-winetest.tar.gz regards, Jakob

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Program won't run in debugger
by Shachar Shemesh 02 Oct '03

02 Oct '03

Hi all, I am trying to find out why Wine is not working with some closed application, and fix it. I have narrowed it down from the logs to something to do with MDI (Multiple Documents Interface). However - trying to connect with a debugger to the program causes the program to bomb quite bombastically. It appears that someone (ddd/gdb won't give me a stack frame, so I can only assume this is in the PE portion of the native application, rather than inside Wine) keeps calling STI and CLI (Set Interrupt and Clear Interrupt). This generates a segmentation fault (makes sense - this is priveleged command). If I do "cont", things continue (I can't vouch as to how long they do), but another sementation fault is right around the corner then. On the other hand, if I detach the debugger from the process, the process runs fine. I am at a loss as to what might be the cause. Is there any way to tell gdb to ignore the segmentation fault, and just let the builtin handler take care of it? Will using winedbg instead do me any good? On an unrelated note - I tried running valgrind-wine on the process. It complained right at the start that wine calls system vector 7 (waitpid), which is unsupported by valgrind. This seems odd to me, as this would suggest noone has ever ran valgrind successfully on wine. Implementing waitpid in valgrind produces even stranger result - it seems valgrind exists almost immedietly, while the main process continues onward. Anyone has similar experience with valgrind? Is there any need for me to submit my waitpid implementation? Shachar -- Shachar Shemesh Open Source integration consultant Home page & resume - http://www.shemesh.biz/

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I/O port access broken (SEH broken)
by Andreas Mohr 02 Oct '03

02 Oct '03

Hi all, sounds like the recent architectural changes were a bit too much: now I get Unhandled exception: privileged instruction in 32-bit code (0x0040348b). In 32-bit mode. 0x0040348b (FT255_T32.exe..text+0x248b in FT255_T32.exe): outb %al,%dx Wine-dbg> with a parallel port flash tool I'm trying to use, whereas before it used to work with both direct I/O port access and ppdev. In other words: exception handling about I/O port access has been broken. Andreas Mohr

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Can I do this or does it get us into trouble?
by Bill Medland 02 Oct '03

02 Oct '03

I am trying to solve some focus problems I am having with Wine and I want to know just how far I can go without causing legal problems. The main problem is that under Windows a WM_KILLFOCUS is being sent during the processing of a WM_SETFOCUS message. However It doesn't appear to be being sent by any application code so I presume it is being sent by some Windows code. If I run the application under the Windows debugger, break in the WM_KILLFOCUS handler and do a stack trace to look for hints, and we use the resulting information then does that get us into trouble (since it is going to contain information about e.g. user32.dll)? Does anyone actually know? -- Bill Medland mailto:billmedland(a)mercuryspeed.com http://webhome.idirect.com/~kbmed

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XEN: Another virtual machine
by Uwe Bonnes 02 Oct '03

02 Oct '03

Hallo, http://www.cl.cam.ac.uk/Research/SRG/netos/xen/readmes/README sounds very promising for those interested in virtual machines. Bye -- Uwe Bonnes bon(a)elektron.ikp.physik.tu-darmstadt.de Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt --------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------

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Re: Wineconf 2004, otherwise known as...
by Ivan Leo Murray-Smith 02 Oct '03

02 Oct '03

March would be good, it's much nicer then, but any later than that and it will be packed with tourists (And prices will go up). The nearest airport is Naples, a train takes about an hour to get to Sorrento from there. For the EU there are direct connections, from the US and Canada you will probably have to get a flight to Rome, and then precede to Naples from there, it takes about twenty minutes. Comments from anybody planning to participate are welcome.

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dlls/user/tests/msg.c
by Gerald Pfeifer 02 Oct '03

02 Oct '03

After the creation of dlls/user/tests/msg.c I'm seeing the following msg.c:128: warning: `WmMouseMoveInNonClientAreaSeq' defined but not used msg.c:135: warning: `WmMouseMoveInClientAreaSeq' defined but not used msg.c:142: warning: `WmDragTitleBarSeq' defined but not used msg.c:154: warning: `WmDragThinkBordersBarSeq' defined but not used msg.c:183: warning: `WmClickInactiveButtonSeq' defined but not used msg.c:204: warning: `WmReparentButtonSeq' defined but not used msg.c:217: warning: `WmCreateModalDialogSeq' defined but not used msg.c:248: warning: `WmDestroyModalDialogSeq' defined but not used msg.c:271: warning: `WmCreateModalDialogResizeSeq' defined but not used when using GCC 3.3. Are you planning to address this, or should "static" be removed from these? Gerald -- Gerald Pfeifer (Jerry) gerald(a)pfeifer.com http://www.pfeifer.com/gerald/

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Translating WINE using dedicated tools
by Martin Quinson 02 Oct '03

02 Oct '03

[Please CC me, I'm not subscribed to this list] Hello, I've read in the last Wine KC that you are getting troubles to keep the translation of wine uptodate. I am pretty well involved in the translation of free software, and this is a common issue for all of us. It is so common that I did a program to deal easily with the translation of any kind of resource. This is called po4a (po for anything), and you can find more details about this on http://savannah.nongnu.org/projects/po4a and http://www.nongnu.org/po4a/ . The idea is to ease the convertions resource -> po file and then po -> resource when the translation is done. So, checking if the translation is uptodate is as easy as used the dedicated tools of the gettext world. Po4a is fully modular, and all we have to do to let wine using it is a new (perl) module to parse it. You can find more details about how to do a module using `perldoc Locale::Po4a::TransTractor` once the program is installed. I would like to help here, but I need to know the gramar of the resource files. Do you have any parsers around there ? The better would be to have Perl based ones, since this is the language used in po4a. What do you guys think? Mt. [Please CC me, I'm not subscribed to this list] -- The most exciting phrase to hear in science, the one that heralds new discoveries, is not "Eureka!" (I found it!) but "That's funny ..." --- Isaac Asimov

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