https://bugs.freedesktop.org/show_bug.cgi?id=48693 Bug #: 48693 Summary: -O2 optimization breaks 32 bit wine 3D on 64 bit system Classification: Unclassified Product: Mesa Version: unspecified Platform: x86-64 (AMD64) OS/Version: Linux (All) Status: NEW Severity: normal Priority: medium Component: Drivers/DRI/R600 AssignedTo: dri-devel@xxxxxxxxxxxxxxxxxxxxx ReportedBy: haagch.christoph@xxxxxxxxxxxxxx Created attachment 59983 --> https://bugs.freedesktop.org/attachment.cgi?id=59983 furmark crash in wine, mesa compiled with CFLAGS="-O2" So I had this bug across some gcc versions and mesa versions (since about the time llvm 3.0 came out) and I figured I should probably report it since it didn't go away until now. I'm on a notebook with Redwood, HD 6550M with current libdrm git, mesa git, xf86-video-ati git, gcc (GCC) 4.7.0 20120407. The problem is this: If I compile mesa with CFLAGS="-O2" I immedately get a crash in all (32 bit) 3D applications/games I have tested in wine (before even displaying the main window). An example is furmark, see attachment. It tries to access an apparently invalid address at 0x7cae670a and at this position there is r600_dri.so. If I compile mesa with CFLAGS="-O1" (or "-Os") this does not happen. In fact, if I install mesa compiled with "-O2" and only replace /usr/lib32/xorg/modules/dri/r600_dri.so with one from a mesa build compiled with "-O1" it also works. Another curiosity is that when I do this: ~/.wine/drive_c/FurMark % WINEDEBUG=+all wine FurMark.exe &> /dev/null then I get the same crash, as expected. But when I do this: ~/.wine/drive_c/FurMark % WINEDEBUG=+all wine FurMark.exe &> furmarkdebug.txt it starts fine to the main window. Only later, when clicking on benchmark, I get a very similar crash to the above. Native 32 bit games work fine with an "-O2" compiled mesa. Internal wine programs like regedit, explorer or wine internet explorer work also. If you can tell me how I can obtain more information about this obscure bug I will gladly do. -- Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
