[quake3-bugzilla] [Bug 5709] New: Segfault with when invoked with --version

[bugzilla-daemon at icculus.org]

https://bugzilla.icculus.org/show_bug.cgi?id=5709

           Summary: Segfault with when invoked with --version
           Product: ioquake3
           Version: SVN HEAD
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: minor
          Priority: P3
         Component: Misc
        AssignedTo: zakk at icculus.org
        ReportedBy: brian.webbs at gmx.de
         QAContact: quake3-bugzilla at icculus.org


When invoking either ioq3ded or ioquake3 with the "-v" or "--version" switch,
it'll segfault.

  Starting program: /usr/games/bin/ioq3ded -v
  ioq3 1.36_SVN2299 dedicated server (Jul  7 2012)

  Program received signal SIGSEGV, Segmentation fault.
  0x000055555561e9c6 in Sys_DefaultHomePath () at code/sys/sys_unix.c:70
  70                if(com_homepath->string[0])
  (gdb) bt
  #0  0x000055555561e9c6 in Sys_DefaultHomePath () at code/sys/sys_unix.c:70
  #1  0x0000555555618823 in Sys_PIDFileName () at code/sys/sys_main.c:143
  #2  Sys_Exit (exitCode=0) at code/sys/sys_main.c:207
  #3  0x00005555556196f2 in Sys_ParseArgs (argv=0x7fffffffdfe8, 
      argc=<optimized out>) at code/sys/sys_main.c:522
  #4  main (argc=<optimized out>, argv=0x7fffffffdfe8) at
code/sys/sys_main.c:608


The naive approach would be testing for "if (com_homepath &&
com_homepath->string[0])" in Sys_DefaultHomePath(). com_homepath is set in
Com_Init(), which is called after Sys_ParseArgs() in main(). Com_Init() is also
where Sys_WritePIDFile() is called, so the PID file does not yet exist when
Sys_Exit() is called from Sys_ParseArgs() anyways.

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