[Bug 16627] New: unaligned access(bus error) in drivers/dri/common/utils.c

[<bug...@fr...>]

http://bugs.freedesktop.org/show_bug.cgi?id=16627

           Summary: unaligned access(bus error) in
                    drivers/dri/common/utils.c
           Product: Mesa
           Version: 7.1
          Platform: SPARC
               URL: https://bugs.gentoo.org/show_bug.cgi?id=230953
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Other
        AssignedTo: dri...@li...
        ReportedBy: blu...@ge...


When using GLX on an architecture that can't do unaligned memory access(sparc64
in this case) Xorg fails to start.

GDB shows a SIGBUS(bus error) in src/mesa/drivers/dri/common/utils.c line 840
which is:

    default:
    *value = *(unsigned int *)
        ((char *) &config->modes + attribMap[index].offset);

    break;

sizeof(unsigned int) is 4
sizeof(char) is 1

If you need further information or testing please let me know.


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