Invalid memory access
Weird - seems I can't run battles for this bot. Within the first several rounds, I always get an error like one of these:
Invalid memory access of location 0x101eff000 rip=0x101eff000
./robocode.sh: line 4: 798 Bus error
java -Xmx512M -cp libs/robocode.jar robocode.Robocode $*
...
Invalid memory access of location 0x0 rip=0x0
./robocode.sh: line 4: 722 Segmentation fault
java -Xmx512M -cp libs/robocode.jar robocode.Robocode $*
I guess the same probably goes for Darkcanuck, as with our two clients running, Diamond 1.6.12 got to 2k battles without getting a battle vs Hamilton. I've seen a similar error sometimes for MogBot in RoboResearch, but not every single time. It looks like Hamilton comes with source, so maybe I can investigate tomorrow.
By the nature of the Java language/vm itself, it should be 100% impossible for any Java code to cause a segfault...
Before looking deeper into it, this looks to me like a bug in your JVM Voidious.
In general, yes, and that was my first impression - I'm guessing Darkcanuck and I are both on Macs using the Apple JVM. But there are some special cases, like JNI and direct ByteBuffers, that give Java more direct access to memory stuff - maybe Robocode uses some such special feature and Hamilton is exposing a bug in Robocode?
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This bot crashes my Roborumble client. Also it's the only bot with 840 pairings. At the time of this writing, all other bots have 839 pairings. Should we remove it from the rumble maybe? -- PEZ 19:41, 12 November 2011 (UTC) Moved from main page
