[quake3-bugzilla] [Bug 5702] New: QVM execution crashes when compiled with -fstack-protector

[bugzilla-daemon at icculus.org]

https://bugzilla.icculus.org/show_bug.cgi?id=5702

           Summary: QVM execution crashes when compiled with
                    -fstack-protector
           Product: ioquake3
           Version: SVN HEAD
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P3
         Component: Misc
        AssignedTo: zakk at icculus.org
        ReportedBy: brian.webbs at gmx.de
         QAContact: quake3-bugzilla at icculus.org


When ioq3ded+ioquake3 are compiled with -fstack-protector in CFLAGS, the
executables crash while loading QVMs;

    Loading vm file vm/qagame.qvm...
    File "vm/qagame.qvm" found in "/usr/share/games/quake3/baseq3/pak8.pk3"
    VM file qagame compiled to 1823488 bytes of code
    qagame loaded in 3270528 bytes on the hunk
    ********************
    ERROR: program tried to execute code outside VM
    ********************
    ----- Server Shutdown (Server crashed: program tried to execute code
outside VM) -----
    recursive error after: program tried to execute code outside VM


This compile option is enabled by default on Gentoo Hardened and similar
setups.

I guess there is no easy way to selectively disable SSP for the function(s)
which cause trouble. As such it might be a good idea to add
-fno-stack-protector and a comment to the default CFLAGS?

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