More C1 crashing in JRuby
Tom Rodriguez
Thomas.Rodriguez at Sun.COM
Fri Oct 10 12:31:28 PDT 2008
This looks almost the same as the other crash. A loop is being formed
with an exception handler in way we're not prepared to deal with. The
same C1 fix resolves this issue as well but I'm not sure how you
should restructure the bytecodes to work around the C1 bug. I think
your exception handler covers too much control flow. If the code were
written in Java then you'd probably have to structure your exception
handlers differently.
tom
On Oct 10, 2008, at 9:56 AM, Charles Oliver Nutter wrote:
> Oops, sorry about that. New DSL modem didn't have port forwarding
> set up. Should be working now.
>
> Tom Rodriguez wrote:
>> From the error log, the crash appears to be in mark_loops which is
>> the same place it was crashing before with the funny exception
>> edges. jruby.headius.com keeps timing out so I haven't been able
>> to download a copy of jruby. Once it comes back I'll see what I
>> can find.
>> tom
>> On Oct 10, 2008, at 7:43 AM, Charles Oliver Nutter wrote:
>>> Another JRuby user reported SIGSEGV in C1 with a simple snippit of
>>> Ruby code:
>>>
>>> c = 1
>>>
>>> while (true)
>>> flag = 0
>>> (1..20).each do |e|
>>> flag += (c % e)
>>> end
>>> break if (flag == 0)
>>> c += 1
>>> end
>>> c
>>>
>>> I was able to reproduce it using Landon Fuller's Java 6 and
>>> OpenJDK 7 builds on OS X, and have attached the dumps to this
>>> email (8135 is Java 6, 8160 is Java 7). It did not appear to crash
>>> on Apple Java 5. I've also attached the original reporter's dump
>>> file (2912), from Windows XP + Java 6.
>>>
>>> As you'd expect, switching to C2 makes the problem disappear. And
>>> like last time, I'm willing to make whatever changes necessary to
>>> work around the problem, if possible.
>>>
>>> The JRuby bug report is here:
>>>
>>> http://jira.codehaus.org/browse/JRUBY-3049
>>>
>>> Latest JRuby nightly builds are available here (unpack, put bin/
>>> in PATH, run 'jruby test.rb' where test.rb is the above script;
>>> defaults to -client, pass --server to switch):
>>>
>>> http://jruby.headius.com:8080/hudson/job/jruby-dist/
>>>
>>> Do you want me to file this bug also through the usual channels?
>>>
>>> - Charlie
>>> #
>>> # A fatal error has been detected by the Java Runtime Environment:
>>> #
>>> # SIGSEGV (0xb) at pc=0x010735c7, pid=8160, tid=2958077952
>>> #
>>> # Java VM: OpenJDK Client VM (14.0-b01 mixed mode bsd-x86 )
>>> # Problematic frame:
>>> # V [libjvm.dylib+0x735c7]
>>> #
>>> # If you would like to submit a bug report, please visit:
>>> # http://java.sun.com/webapps/bugreport/crash.jsp
>>> #
>>>
>>> --------------- T H R E A D ---------------
>>>
>>> Current thread (0x0082bc00): JavaThread "CompilerThread0" daemon
>>> [_thread_in_native, id=-1336889344, stack(0xb048b000,0xb050b000)]
>>>
>>> siginfo:si_signo=SIGSEGV: si_errno=0, si_code=1 (SEGV_MAPERR),
>>> si_addr=0x46dc3668
>>>
>>> Registers:
>>> EAX=0x00002000, EBX=0x01073776, ECX=0x0000000d, EDX=0x26dc3680
>>> ESP=0xb050a520, EBP=0xb050a588, ESI=0x07fffffa, EDI=0x00000001
>>> EIP=0x010735c7, EFLAGS=0x00010206
>>>
>>> Top of Stack: (sp=0xb050a520)
>>> 0xb050a520: 007b2be0 26dc31e8 b050a568 01073425
>>> 0xb050a530: b050a628 b050a668 b050a674 b050a530
>>> 0xb050a540: 0000000e b050a628 26e670b0 ffffffff
>>> 0xb050a550: 00000000 00000002 00000000 00000034
>>> 0xb050a560: b050a628 26dc3680 0000021c 000000b4
>>> 0xb050a570: 00000018 b050a590 b050a608 b050a5a0
>>> 0xb050a580: b050a674 b050a628 b050a5f8 01073906
>>> 0xb050a590: 00000002 26dc31f4 b050a5c8 01073906
>>>
>>> Instructions: (pc=0x010735c7)
>>> 0x010735b7: 10 89 ce b8 01 00 00 00 c1 ee 05 83 e1 1f d3 e0
>>> 0x010735c7: 8b 0c b2 09 c1 89 0c b2 90 8b 4d b0 8b 01 8b 51
>>>
>>> Stack: [0xb048b000,0xb050b000], sp=0xb050a520, free space=509k
>>> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code,
>>> C=native code)
>>> V [libjvm.dylib+0x735c7]
>>> V [libjvm.dylib+0x73906]
>>> V [libjvm.dylib+0x73a74]
>>> V [libjvm.dylib+0x56b79]
>>> V [libjvm.dylib+0x5701b]
>>> V [libjvm.dylib+0x571af]
>>> V [libjvm.dylib+0x57440]
>>> V [libjvm.dylib+0x57499]
>>> V [libjvm.dylib+0x57768]
>>> V [libjvm.dylib+0x13e14c]
>>> V [libjvm.dylib+0x13f9f0]
>>> V [libjvm.dylib+0x3ab524]
>>> V [libjvm.dylib+0x3b2921]
>>> V [libjvm.dylib+0x3b2a0e]
>>> V [libjvm.dylib+0x3071a5]
>>> C [libSystem.B.dylib+0x326f5] _pthread_start+0x141
>>> C [libSystem.B.dylib+0x325b2] thread_start+0x22
>>>
>>>
>>> Current CompileTask:
>>> C1: 1% ! test.rescue_1$RUBY$__rescue__(Lorg/jruby/runtime/
>>> ThreadContext;Lorg/jruby/runtime/builtin/IRubyObject;Lorg/jruby/
>>> runtime/Block;)Lorg/jruby/runtime/builtin/IRubyObject; @ 34 (275
>>> bytes)
>>>
>>>
>>> --------------- P R O C E S S ---------------
>>>
>>> Java Threads: ( => current thread )
>>> 0x00831c00 JavaThread "Low Memory Detector" daemon
>>> [_thread_blocked, id=-1335832576, stack(0xb050d000,0xb060d000)]
>>> =>0x0082bc00 JavaThread "CompilerThread0" daemon
>>> [_thread_in_native, id=-1336889344, stack(0xb048b000,0xb050b000)]
>>> 0x00820800 JavaThread "Signal Dispatcher" daemon [_thread_blocked,
>>> id=-1337421824, stack(0xb0389000,0xb0489000)]
>>> 0x0081f000 JavaThread "Finalizer" daemon [_thread_blocked,
>>> id=-1338478592, stack(0xb0287000,0xb0387000)]
>>> 0x0081b000 JavaThread "Reference Handler" daemon [_thread_blocked,
>>> id=-1339535360, stack(0xb0185000,0xb0285000)]
>>> 0x00800800 JavaThread "main" [_thread_in_Java, id=-1341124608,
>>> stack(0xb0001000,0xb0101000)]
>>>
>>> Other Threads:
>>> 0x00818800 VMThread [stack: 0xb0103000,0xb0183000] [id=-1340592128]
>>> 0x00832c00 WatcherThread [stack: 0xb060f000,0xb068f000]
>>> [id=-1335300096]
>>>
>>> VM state:not at safepoint (normal execution)
>>>
>>> VM Mutex/Monitor currently owned by a thread: None
>>>
>>> Heap
>>> def new generation total 960K, used 393K [0x039a0000,
>>> 0x03aa0000, 0x06010000)
>>> eden space 896K, 43% used [0x039a0000, 0x03a02668, 0x03a80000)
>>> from space 64K, 0% used [0x03a90000, 0x03a900d0, 0x03aa0000)
>>> to space 64K, 0% used [0x03a80000, 0x03a80000, 0x03a90000)
>>> tenured generation total 4096K, used 1209K [0x06010000,
>>> 0x06410000, 0x22da0000)
>>> the space 4096K, 29% used [0x06010000, 0x0613e400, 0x0613e400,
>>> 0x06410000)
>>> compacting perm gen total 12288K, used 9241K [0x22da0000,
>>> 0x239a0000, 0x26da0000)
>>> the space 12288K, 75% used [0x22da0000, 0x236a6468, 0x236a6600,
>>> 0x239a0000)
>>> No shared spaces configured.
>>>
>>> Dynamic libraries:
>>> 0x00000000 /usr/lib/libgcc_s.1.dylib
>>> 0x00000000 /usr/lib/libSystem.B.dylib
>>> 0x00000000 /usr/lib/system/libmathCommon.A.dylib
>>> 0x01000000 /System/Library/Frameworks/JavaVM.framework/
>>> Versions/openjdk7/Home/jre/lib/i386/client/libjvm.dylib
>>> 0x00000000 /usr/lib/libstdc++.6.dylib
>>> 0x0001e000 /System/Library/Frameworks/JavaVM.framework/
>>> Versions/openjdk7/Home/jre/lib/i386/native_threads/libhpi.dylib
>>> 0x00031000 /System/Library/Frameworks/JavaVM.framework/
>>> Versions/openjdk7/Home/jre/lib/i386/libverify.dylib
>>> 0x00040000 /System/Library/Frameworks/JavaVM.framework/
>>> Versions/openjdk7/Home/jre/lib/i386/libjava.dylib
>>> 0x00067000 /System/Library/Frameworks/JavaVM.framework/
>>> Versions/openjdk7/Home/jre/lib/i386/libzip.dylib
>>> 0x0075c000 /System/Library/Frameworks/JavaVM.framework/
>>> Versions/openjdk7/Home/jre/lib/i386/libmanagement.dylib
>>> 0x26e6d000 /private/var/tmp/jna57777.tmp
>>> 0x26e85000 /System/Library/Frameworks/JavaVM.framework/
>>> Versions/A/JavaVM
>>> 0x00000000 /System/Library/Frameworks/Foundation.framework/
>>> Versions/C/Foundation
>>> 0x00000000 /usr/lib/libobjc.A.dylib
>>> 0x00000000 /System/Library/Frameworks/CoreFoundation.framework/
>>> Versions/A/CoreFoundation
>>> 0x00000000 /usr/lib/libicucore.A.dylib
>>> 0x00000000 /usr/lib/libxml2.2.dylib
>>> 0x00000000 /usr/lib/libz.1.dylib
>>> 0x00000000 /System/Library/Frameworks/CoreServices.framework/
>>> Versions/A/Frameworks/CFNetwork.framework/Versions/A/CFNetwork
>>> 0x00000000 /System/Library/Frameworks/
>>> SystemConfiguration.framework/Versions/A/SystemConfiguration
>>> 0x00000000 /System/Library/Frameworks/CoreServices.framework/
>>> Versions/A/CoreServices
>>> 0x00000000 /System/Library/Frameworks/Security.framework/
>>> Versions/A/Security
>>> 0x00000000 /usr/lib/libauto.dylib
>>> 0x00000000 /usr/lib/libsqlite3.0.dylib
>>> 0x00000000 /System/Library/Frameworks/CoreServices.framework/
>>> Versions/A/Frameworks/CarbonCore.framework/Versions/A/CarbonCore
>>> 0x00000000 /System/Library/Frameworks/CoreServices.framework/
>>> Versions/A/Frameworks/Metadata.framework/Versions/A/Metadata
>>> 0x00000000 /System/Library/Frameworks/CoreServices.framework/
>>> Versions/A/Frameworks/OSServices.framework/Versions/A/OSServices
>>> 0x00000000 /System/Library/Frameworks/CoreServices.framework/
>>> Versions/A/Frameworks/SearchKit.framework/Versions/A/SearchKit
>>> 0x00000000 /System/Library/Frameworks/CoreServices.framework/
>>> Versions/A/Frameworks/AE.framework/Versions/A/AE
>>> 0x00000000 /System/Library/Frameworks/CoreServices.framework/
>>> Versions/A/Frameworks/LaunchServices.framework/Versions/A/
>>> LaunchServices
>>> 0x00000000 /System/Library/Frameworks/CoreServices.framework/
>>> Versions/A/Frameworks/DictionaryServices.framework/Versions/A/
>>> DictionaryServices
>>> 0x00000000 /System/Library/Frameworks/IOKit.framework/Versions/
>>> A/IOKit
>>> 0x00000000 /System/Library/Frameworks/
>>> DiskArbitration.framework/Versions/A/DiskArbitration
>>> 0x00000000 /usr/lib/libbsm.dylib
>>> 0x00000000 /usr/lib/libxslt.1.dylib
>>>
>>> VM Arguments:
>>> jvm_args: -Djruby.memory.max=500m -Djruby.stack.max=1024k -Xmx500m
>>> -Xss1024k -Xbootclasspath/a:/Users/headius/projects/jruby/lib/
>>> jruby.jar -Djruby.home=/Users/headius/projects/jruby -Djruby.lib=/
>>> Users/headius/projects/jruby/lib -Djruby.script=jruby -
>>> Djruby.shell=/bin/sh
>>> java_command: org.jruby.Main test.rb
>>> Launcher Type: SUN_STANDARD
>>>
>>> Environment Variables:
>>> JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Versions/
>>> openjdk7/Home
>>> PATH=/System/Library/Frameworks/JavaVM.framework/Versions/openjdk7/
>>> Home/bin:/Users/headius/projects/jruby/bin:/bin:/sbin:/usr/bin:/
>>> usr/sbin:/opt/local/bin:/opt/local/sbin
>>> SHELL=/bin/bash
>>> DISPLAY=/tmp/launch-L2Owkb/:0
>>> DYLD_FALLBACK_LIBRARY_PATH=/System/Library/Frameworks/
>>> JavaVM.framework/Versions/openjdk7/Home/jre/lib/i386/client:/
>>> System/Library/Frameworks/JavaVM.framework/Versions/openjdk7/Home/
>>> jre/lib/i386:/System/Library/Frameworks/JavaVM.framework/Versions/
>>> openjdk7/Home/jre/../lib/i386
>>>
>>> Signal Handlers:
>>> SIGSEGV: [libjvm.dylib+0x3ee290], sa_mask[0]=0xfffefeff,
>>> sa_flags=0x00000042
>>> SIGBUS: [libjvm.dylib+0x3ee290], sa_mask[0]=0xfffefeff,
>>> sa_flags=0x00000042
>>> SIGFPE: [libjvm.dylib+0x303190], sa_mask[0]=0xfffefeff,
>>> sa_flags=0x00000042
>>> SIGPIPE: [libjvm.dylib+0x303190], sa_mask[0]=0xfffefeff,
>>> sa_flags=0x00000042
>>> SIGXFSZ: [libjvm.dylib+0x303190], sa_mask[0]=0xfffefeff,
>>> sa_flags=0x00000042
>>> SIGILL: [libjvm.dylib+0x303190], sa_mask[0]=0xfffefeff,
>>> sa_flags=0x00000042
>>> SIGUSR1: SIG_DFL, sa_mask[0]=0x63807efb, sa_flags=0x00000000
>>> SIGUSR2: [libjvm.dylib+0x3043c0], sa_mask[0]=0x00000000,
>>> sa_flags=0x00000042
>>> SIGHUP: [libjvm.dylib+0x305d50], sa_mask[0]=0xfffefeff,
>>> sa_flags=0x00000042
>>> SIGINT: [libjvm.dylib+0x305d50], sa_mask[0]=0xfffefeff,
>>> sa_flags=0x00000042
>>> SIGTERM: [libjvm.dylib+0x305d50], sa_mask[0]=0xfffefeff,
>>> sa_flags=0x00000042
>>> SIGQUIT: [libjvm.dylib+0x305d50], sa_mask[0]=0xfffefeff,
>>> sa_flags=0x00000042
>>>
>>>
>>> --------------- S Y S T E M ---------------
>>>
>>> OS:Bsd
>>> uname:Darwin 9.5.0 Darwin Kernel Version 9.5.0: Wed Sep 3
>>> 11:29:43 PDT 2008; root:xnu-1228.7.58~1/RELEASE_I386 i386
>>> rlimit: STACK 8192k, CORE 0k, NPROC 266, NOFILE 10240
>>> CPU:total 2 (2 cores per cpu, 1 threads per core) family 6 model
>>> 14 stepping 8, cmov, cx8, fxsr, mmx, sse, sse2, sse3
>>>
>>> Memory: 4k page, physical 1853232k(463308k free)
>>>
>>> vm_info: OpenJDK Client VM (14.0-b01) for bsd-x86 JRE (1.7.0-
>>> internal-landonf_2008_08_20_14_13-b00), built on Aug 20 2008
>>> 14:25:37 by "landonf" with gcc 4.0.1 (Apple Inc. build 5484)
>>>
>>> time: Fri Oct 10 09:23:14 2008
>>> elapsed time: 3 seconds
>>>
>>> #
>>> # An unexpected error has been detected by Java Runtime Environment:
>>> #
>>> # SIGSEGV (0xb) at pc=0x0106dea7, pid=8135, tid=0xb050b000
>>> #
>>> # Java VM: Java HotSpot(TM) Client VM (1.6.0_03-p3-
>>> landonf_05_dec_2007_22_04-b00 mixed mode)
>>> # Problematic frame:
>>> # V [libjvm.dylib+0x6dea7]
>>> #
>>> # Please submit bug reports to landonf at bikemonkey.org
>>> #
>>>
>>> --------------- T H R E A D ---------------
>>>
>>> Current thread (0x0082a400): JavaThread "CompilerThread0" daemon
>>> [_thread_in_native, id=-1336889344]
>>>
>>> siginfo:si_signo=11, si_errno=0, si_code=1, si_addr=0x46dda7c8
>>>
>>> Registers:
>>> EAX=0x00002000, EBX=0x0106e056, ECX=0x0000000d, EDX=0x26dda7e0
>>> ESP=0xb050a580, EBP=0xb050a5e8, ESI=0x07fffffa, EDI=0x00000001
>>> EIP=0x0106dea7, EFLAGS=0x00010206
>>>
>>> Top of Stack: (sp=0xb050a580)
>>> 0xb050a580: 26decd90 26dda348 b050a5c8 0106dd05
>>> 0xb050a590: b050a688 b050a6c8 b050a6d4 b050a590
>>> 0xb050a5a0: 0000000e b050a688 26dd62d8 ffffffff
>>> 0xb050a5b0: 00000000 00000002 00000000 00000034
>>> 0xb050a5c0: b050a688 26dda7e0 0000021c 000000b4
>>> 0xb050a5d0: 00000018 b050a5f0 b050a668 b050a600
>>> 0xb050a5e0: b050a6d4 b050a688 b050a658 0106e1e6
>>> 0xb050a5f0: 00000002 26dda354 b050a628 0106e1e6
>>>
>>> Instructions: (pc=0x0106dea7)
>>> 0x0106de97: 10 89 ce b8 01 00 00 00 c1 ee 05 83 e1 1f d3 e0
>>> 0x0106dea7: 8b 0c b2 09 c1 89 0c b2 90 8b 4d b0 8b 01 8b 51
>>>
>>> Stack: [0xb048b000,0xb050b000), sp=0xb050a580, free space=509k
>>> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code,
>>> C=native code)
>>> V [libjvm.dylib+0x6dea7]
>>> V [libjvm.dylib+0x6e1e6]
>>> V [libjvm.dylib+0x6e354]
>>> V [libjvm.dylib+0x51589]
>>> V [libjvm.dylib+0x51a2b]
>>> V [libjvm.dylib+0x51bbf]
>>> V [libjvm.dylib+0x51e72]
>>> V [libjvm.dylib+0x51ed9]
>>> V [libjvm.dylib+0x5215f]
>>> V [libjvm.dylib+0x125019]
>>> V [libjvm.dylib+0x126940]
>>> V [libjvm.dylib+0x3809d4]
>>> V [libjvm.dylib+0x389361]
>>> V [libjvm.dylib+0x38944e]
>>> V [libjvm.dylib+0x2f3bb2]
>>> C [libSystem.B.dylib+0x326f5] _pthread_start+0x141
>>> C [libSystem.B.dylib+0x325b2] thread_start+0x22
>>>
>>>
>>> Current CompileTask:
>>> C1: 1% ! test.rescue_1$RUBY$__rescue__(Lorg/jruby/runtime/
>>> ThreadContext;Lorg/jruby/runtime/builtin/IRubyObject;Lorg/jruby/
>>> runtime/Block;)Lorg/jruby/runtime/builtin/IRubyObject; @ 34 (275
>>> bytes)
>>>
>>>
>>> --------------- P R O C E S S ---------------
>>>
>>> Java Threads: ( => current thread )
>>> 0x0082fc00 JavaThread "Low Memory Detector" daemon
>>> [_thread_blocked, id=-1335832576]
>>> =>0x0082a400 JavaThread "CompilerThread0" daemon
>>> [_thread_in_native, id=-1336889344]
>>> 0x0081ec00 JavaThread "Signal Dispatcher" daemon [_thread_blocked,
>>> id=-1337421824]
>>> 0x0081d800 JavaThread "Finalizer" daemon [_thread_blocked,
>>> id=-1338478592]
>>> 0x00819400 JavaThread "Reference Handler" daemon [_thread_blocked,
>>> id=-1339535360]
>>> 0x00800800 JavaThread "main" [_thread_in_Java, id=-1341124608]
>>>
>>> Other Threads:
>>> 0x00816c00 VMThread [id=-1340592128]
>>> 0x00830800 WatcherThread [id=-1335300096]
>>>
>>> VM state:not at safepoint (normal execution)
>>>
>>> VM Mutex/Monitor currently owned by a thread: None
>>>
>>> Heap
>>> def new generation total 960K, used 749K [0x03960000,
>>> 0x03a60000, 0x05fd0000)
>>> eden space 896K, 89% used [0x03960000, 0x03a2e2b8, 0x03a40000)
>>> from space 64K, 0% used [0x03a50000, 0x03a500e0, 0x03a60000)
>>> to space 64K, 0% used [0x03a40000, 0x03a40000, 0x03a50000)
>>> tenured generation total 4096K, used 1024K [0x05fd0000,
>>> 0x063d0000, 0x22d60000)
>>> the space 4096K, 25% used [0x05fd0000, 0x060d0250, 0x060d0400,
>>> 0x063d0000)
>>> compacting perm gen total 12288K, used 8930K [0x22d60000,
>>> 0x23960000, 0x26d60000)
>>> the space 12288K, 72% used [0x22d60000, 0x23618930, 0x23618a00,
>>> 0x23960000)
>>> No shared spaces configured.
>>>
>>> Dynamic libraries:
>>> Error: Cannot print dynamic libraries.
>>>
>>> VM Arguments:
>>> jvm_args: -Djruby.memory.max=500m -Djruby.stack.max=1024k -Xmx500m
>>> -Xss1024k -Xbootclasspath/a:/Users/headius/projects/jruby/lib/
>>> jruby.jar -Djruby.home=/Users/headius/projects/jruby -Djruby.lib=/
>>> Users/headius/projects/jruby/lib -Djruby.script=jruby -
>>> Djruby.shell=/bin/sh
>>> java_command: org.jruby.Main test.rb
>>> Launcher Type: SUN_STANDARD
>>>
>>> Environment Variables:
>>> JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Versions/
>>> soylatte/Home
>>> PATH=/System/Library/Frameworks/JavaVM.framework/Versions/soylatte/
>>> Home/bin:/Users/headius/projects/jruby/bin:/bin:/sbin:/usr/bin:/
>>> usr/sbin:/opt/local/bin:/opt/local/sbin
>>> SHELL=/bin/bash
>>> DISPLAY=/tmp/launch-L2Owkb/:0
>>> DYLD_FALLBACK_LIBRARY_PATH=/System/Library/Frameworks/
>>> JavaVM.framework/Versions/soylatte/Home/jre/lib/i386/client:/
>>> System/Library/Frameworks/JavaVM.framework/Versions/soylatte/Home/
>>> jre/lib/i386:/System/Library/Frameworks/JavaVM.framework/Versions/
>>> soylatte/Home/jre/../lib/i386
>>>
>>> Signal Handlers:
>>> SIGSEGV: [libjvm.dylib+0x3bfb80], sa_mask[0]=0xfffefeff,
>>> sa_flags=0x00000042
>>> SIGBUS: [libjvm.dylib+0x3bfb80], sa_mask[0]=0xfffefeff,
>>> sa_flags=0x00000042
>>> SIGFPE: [libjvm.dylib+0x2ef4e0], sa_mask[0]=0xfffefeff,
>>> sa_flags=0x00000042
>>> SIGPIPE: [libjvm.dylib+0x2ef4e0], sa_mask[0]=0xfffefeff,
>>> sa_flags=0x00000042
>>> SIGILL: [libjvm.dylib+0x2ef4e0], sa_mask[0]=0xfffefeff,
>>> sa_flags=0x00000042
>>> SIGUSR1: SIG_DFL, sa_mask[0]=0x63807efb, sa_flags=0x00000000
>>> SIGUSR2: [libjvm.dylib+0x2f06d0], sa_mask[0]=0x00000000,
>>> sa_flags=0x00000042
>>> SIGHUP: [libjvm.dylib+0x2f1a90], sa_mask[0]=0xfffefeff,
>>> sa_flags=0x00000042
>>> SIGINT: [libjvm.dylib+0x2f1a90], sa_mask[0]=0xfffefeff,
>>> sa_flags=0x00000042
>>> SIGQUIT: [libjvm.dylib+0x2f1a90], sa_mask[0]=0xfffefeff,
>>> sa_flags=0x00000042
>>> SIGTERM: [libjvm.dylib+0x2f1a90], sa_mask[0]=0xfffefeff,
>>> sa_flags=0x00000042
>>> SIGUSR2: [libjvm.dylib+0x2f06d0], sa_mask[0]=0x00000000,
>>> sa_flags=0x00000042
>>>
>>>
>>> --------------- S Y S T E M ---------------
>>>
>>> OS:Bsd
>>> uname:Darwin 9.5.0 Darwin Kernel Version 9.5.0: Wed Sep 3
>>> 11:29:43 PDT 2008; root:xnu-1228.7.58~1/RELEASE_I386 i386
>>> rlimit: STACK 8192k, CORE 0k, NPROC 266, NOFILE 10240
>>> CPU:total 2 (2 cores per cpu, 1 threads per core) family 6 model
>>> 14 stepping 8, cmov, cx8, fxsr, mmx, sse, sse2, sse3
>>>
>>> Memory: 4k page, physical 1853252k(463313k free)
>>>
>>> vm_info: Java HotSpot(TM) Client VM (1.6.0_03-p3-
>>> landonf_05_dec_2007_22_04-b00) for bsd-x86, built on Dec 5 2007
>>> 22:13:24 by "landonf" with gcc 4.0.1 (Apple Inc. build 5465)
>>>
>>> #
>>> # An unexpected error has been detected by Java Runtime Environment:
>>> #
>>> # EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x6d8a0242,
>>> pid=2912, tid=2772
>>> #
>>> # Java VM: Java HotSpot(TM) Client VM (1.6.0_02-b06 mixed mode,
>>> sharing)
>>> # Problematic frame:
>>> # V [jvm.dll+0x30242]
>>> #
>>> # If you would like to submit a bug report, please visit:
>>> # http://java.sun.com/webapps/bugreport/crash.jsp
>>> #
>>>
>>> --------------- T H R E A D ---------------
>>>
>>> Current thread (0x02cc8800): JavaThread "CompilerThread0" daemon
>>> [_thread_in_native, id=2772]
>>>
>>> siginfo: ExceptionCode=0xc0000005, writing address 0x23392810
>>>
>>> Registers:
>>> EAX=0x23392810, EBX=0x0323f8b8, ECX=0x0000000d, EDX=0x00002000
>>> ESP=0x0323f828, EBP=0xffffffff, ESI=0x0323f8c4, EDI=0x02cdc4f0
>>> EIP=0x6d8a0242, EFLAGS=0x00010216
>>>
>>> Top of Stack: (sp=0x0323f828)
>>> 0x0323f828: 0323f878 03390798 0323f894 00000000
>>> 0x0323f838: 02d79098 0000000d 0323f878 02d7f2d0
>>> 0x0323f848: 0323f894 03392828 0000021c 000000b4
>>> 0x0323f858: 6d8a0407 02ce0f5c 02cdbd28 0323fa58
>>> 0x0323f868: 00000000 6d8a0456 03390798 0323fa1c
>>> 0x0323f878: 000000b4 00000029 00000003 03392200
>>> 0x0323f888: 00000000 03392490 000000b4 033924a8
>>> 0x0323f898: 000000b4 033924c0 000000b4 000000b4
>>>
>>> Instructions: (pc=0x6d8a0242)
>>> 0x6d8a0232: c1 ea 05 8d 04 90 83 e1 1f ba 01 00 00 00 d3 e2
>>> 0x6d8a0242: 09 10 8b 16 8b 4e 04 4a 8b c2 89 16 8b 04 81 3b
>>>
>>>
>>> Stack: [0x031f0000,0x03240000), sp=0x0323f828, free space=318k
>>> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code,
>>> C=native code)
>>> V [jvm.dll+0x30242]
>>>
>>>
>>> Current CompileTask:
>>> C1: 1% ! problem5.rescue_1$RUBY$__rescue__(Lorg/jruby/runtime/
>>> ThreadContext;Lorg/jruby/runtime/builtin/IRubyObject;Lorg/jruby/
>>> runtime/Block;)Lorg/jruby/runtime/builtin/IRubyObject; @ 34 (275
>>> bytes)
>>>
>>>
>>> --------------- P R O C E S S ---------------
>>>
>>> Java Threads: ( => current thread )
>>> 0x02ccd400 JavaThread "Low Memory Detector" daemon
>>> [_thread_blocked, id=1860]
>>> =>0x02cc8800 JavaThread "CompilerThread0" daemon
>>> [_thread_in_native, id=2772]
>>> 0x02cc7800 JavaThread "Attach Listener" daemon [_thread_blocked,
>>> id=4088]
>>> 0x02cc6800 JavaThread "Signal Dispatcher" daemon [_thread_blocked,
>>> id=644]
>>> 0x02cc2000 JavaThread "Finalizer" daemon [_thread_blocked, id=3164]
>>> 0x02cbdc00 JavaThread "Reference Handler" daemon [_thread_blocked,
>>> id=1448]
>>> 0x002a6c00 JavaThread "main" [_thread_in_Java, id=3660]
>>>
>>> Other Threads:
>>> 0x02cb4800 VMThread [id=3140]
>>> 0x02cd7c00 WatcherThread [id=2952]
>>>
>>> VM state:not at safepoint (normal execution)
>>>
>>> VM Mutex/Monitor currently owned by a thread: None
>>>
>>> Heap
>>> def new generation total 960K, used 804K [0x07560000,
>>> 0x07660000, 0x09bd0000)
>>> eden space 896K, 89% used [0x07560000, 0x07629260, 0x07640000)
>>> from space 64K, 0% used [0x07640000, 0x076400e0, 0x07650000)
>>> to space 64K, 0% used [0x07650000, 0x07650000, 0x07660000)
>>> tenured generation total 4096K, used 1042K [0x09bd0000,
>>> 0x09fd0000, 0x26960000)
>>> the space 4096K, 25% used [0x09bd0000, 0x09cd4bc0, 0x09cd4c00,
>>> 0x09fd0000)
>>> compacting perm gen total 12288K, used 6611K [0x26960000,
>>> 0x27560000, 0x2a960000)
>>> the space 12288K, 53% used [0x26960000, 0x26fd4f58, 0x26fd5000,
>>> 0x27560000)
>>> ro space 8192K, 66% used [0x2a960000, 0x2aead978, 0x2aeada00,
>>> 0x2b160000)
>>> rw space 12288K, 52% used [0x2b160000, 0x2b7a9cb8, 0x2b7a9e00,
>>> 0x2bd60000)
>>>
>>> Dynamic libraries:
>>> 0x00400000 - 0x00423000 C:\Program Files\Java\jdk1.6.0_02\bin
>>> \java.exe
>>> 0x7c900000 - 0x7c9af000 C:\WINDOWS\system32\ntdll.dll
>>> 0x7c800000 - 0x7c8f6000 C:\WINDOWS\system32\kernel32.dll
>>> 0x77dd0000 - 0x77e6b000 C:\WINDOWS\system32\ADVAPI32.dll
>>> 0x77e70000 - 0x77f02000 C:\WINDOWS\system32\RPCRT4.dll
>>> 0x77fe0000 - 0x77ff1000 C:\WINDOWS\system32\Secur32.dll
>>> 0x7c340000 - 0x7c396000 C:\Program Files\Java\jdk1.6.0_02\jre
>>> \bin\msvcr71.dll
>>> 0x6d870000 - 0x6dab9000 C:\Program Files\Java\jdk1.6.0_02\jre
>>> \bin\client\jvm.dll
>>> 0x7e410000 - 0x7e4a1000 C:\WINDOWS\system32\USER32.dll
>>> 0x77f10000 - 0x77f59000 C:\WINDOWS\system32\GDI32.dll
>>> 0x76b40000 - 0x76b6d000 C:\WINDOWS\system32\WINMM.dll
>>> 0x6d3c0000 - 0x6d3c8000 C:\Program Files\Java\jdk1.6.0_02\jre
>>> \bin\hpi.dll
>>> 0x76bf0000 - 0x76bfb000 C:\WINDOWS\system32\PSAPI.DLL
>>> 0x6d820000 - 0x6d82c000 C:\Program Files\Java\jdk1.6.0_02\jre
>>> \bin\verify.dll
>>> 0x6d460000 - 0x6d47f000 C:\Program Files\Java\jdk1.6.0_02\jre
>>> \bin\java.dll
>>> 0x6d860000 - 0x6d86f000 C:\Program Files\Java\jdk1.6.0_02\jre
>>> \bin\zip.dll
>>> 0x6d610000 - 0x6d619000 C:\Program Files\Java\jdk1.6.0_02\jre
>>> \bin\management.dll
>>> 0x03590000 - 0x035e2000 C:\Documents and Settings\Administrator
>>> \Local Settings\Temp\jna25444.tmp
>>> 0x77c10000 - 0x77c68000 C:\WINDOWS\system32\msvcrt.dll
>>>
>>> VM Arguments:
>>> jvm_args: -Xmx500m -Xss1024k -Xbootclasspath/a:C:\JRuby\HEAD\bin\..
>>> \lib\jruby.jar -Djruby.home=C:\JRuby\HEAD\bin\.. -Djruby.lib=C:
>>> \JRuby\HEAD\bin\..\lib -Djruby.shell=cmd.exe -
>>> Djruby.script=jruby.bat
>>> java_command: org.jruby.Main problem5.rb
>>> Launcher Type: SUN_STANDARD
>>>
>>> Environment Variables:
>>> JAVA_HOME=C:\Program Files\Java\jdk1.6.0_02
>>> PATH=C:\PHP\;C:\Program Files\MiKTeX 2.6\miktex\bin;c:\program
>>> files\imagemagick-6.3.8-q8;c:\program files\imagemagick-6.3.0-q8;C:
>>> \Perl\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS
>>> \System32\Wbem;C:\Program Files\cvsnt;C:\Program Files\Java
>>> \jdk1.6.0_02\bin;C:\ant\apache-ant-1.7.0\bin;;C:\UnxUtils\usr\local
>>> \wbin;C:\JRuby\HEAD\bin;C:\Program Files\MySQL\MySQL Server
>>> 5.0\bin;C:\Program Files\Graphviz2.20\Bin;C:\Program Files\Nmap;C:
>>> \Program Files\ImageMagick-6.3.0-Q8;C:\Program Files\gs
>>> \gs8.54\bin;C:\Program Files\gs\gs8.54\lib
>>> USERNAME=Administrator
>>> OS=Windows_NT
>>> PROCESSOR_IDENTIFIER=x86 Family 15 Model 67 Stepping 3, AuthenticAMD
>>>
>>>
>>>
>>> --------------- S Y S T E M ---------------
>>>
>>> OS: Windows XP Build 2600 Service Pack 3
>>>
>>> CPU:total 2 (2 cores per cpu, 1 threads per core) family 15 model
>>> 67 stepping 3, cmov, cx8, fxsr, mmx, sse, sse2, sse3, mmxext,
>>> 3dnow, 3dnowext
>>>
>>> Memory: 4k page, physical 2096492k(1248704k free), swap
>>> 4034788k(3334524k free)
>>>
>>> vm_info: Java HotSpot(TM) Client VM (1.6.0_02-b06) for windows-
>>> x86, built on Jul 12 2007 01:16:14 by "java_re" with unknown MS VC+
>>> +:1310
>>>
>
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