New subject: [Bug 28563] With CLAGS="-O0" Comanche 3 does not find the CD

3 Oct 2011


      http://bugs.winehq.org/show_bug.cgi?id=28563
Bug #: 28563
           Summary: With CLAGS="-O0" Comanche 3 does not find the CD
           Product: Wine
           Version: 1.3.29
          Platform: x86-64
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
        AssignedTo: wine-bugs@winehq.org
        ReportedBy: c_korn@gmx.de
    Classification: Unclassified
Created attachment 36695
  --> http://bugs.winehq.org/attachment.cgi?id=36695
wine 1.3.29 both local and /usr/bin/wine
Ok, the background is that I wanted to find out if bug 21293 was still a
problem in wine 1.3.29 but then I noticed that there is regression in the main
menu which renders it unusable. So I started a regression test.
The problem now was that the game behaved differently when I used my locally
compiled version of wine 1.3.29 or when I used the /usr/bin/wine executable of
wine 1.3.29 which comes with the PPA package of wine (I use Ubuntu 11.04
amd64).
With /usr/bin/wine there was a video intro and then I got to the main menu
which has the graphic issues.
With my own compiled wine executable however there was no intro video and then
I got to another menu which says that not all game options are available
because of the missing CD (this menu does not have graphic issues btw).
So kevlarman from #winehq was so friendly to help me analyze the bug.
Attached you find a file with two logs.
wine_log is from /usr/bin/wine and WINEDEBUG=+file
wine_log_bug is from my own wine executable also with WINEDEBUG=+file
When you search for E:\ in there (E: is my cdrom drive letter) you will notice
that in wine_log there is a call _lopen ("E:\C3G\KDV.PFF",0000) which is
missing in wine_log_bug.
We found out that this had to do with the code optimization I used for
compilation.
CFLAGS="-g -O0" ./configure --verbose --disable-tests && make depend && make
-j8
This was my compilation instruction which I got from
http://wiki.winehq.org/RegressionTesting
Changing it to this also made built version behave correctly like
/usr/bin/wine:
CFLAGS="-gdwarf-2 -O2 -pipe" ./configure --verbose --disable-tests && time make
-j8
Important here is the -O2 flag (compilation with -O0 in the previous line
brings the bug back again. So it is not related to -pipe or -gdwarf-2).
Now I was advised to also enable +relay in order to analyze it more detailed.
Unfortunately with this WINEDEBUG flag also /usr/bin/wine behaves wrong now and
I was not able to get the output +relay (neither piping it to gzip -1, netcat
or a ramdisk helped here) with the correct behavior.
So this is in short.
-O0 works not, -O2 works, -O2 +relay works not. It has to be some timing issue
I assume. Also it is not clear whether the bug is in wine or gcc.
But at least I can do the regression testing about the graphic issues in the
main menu...
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[Bug 28563] New: With CLAGS="-O0" Comanche 3 does not find the CD