Date: Sun, 23 Oct 2005 08:35:13 -0600 From: "Manfred Riem" <mriem@manorrock.org> To: freebsd-java@freebsd.org Subject: Re: "An unexpected error" when i run class with constructor creatingitself. (jdk1.5.0-p2) Message-ID: <djg3he$k0q$1@sea.gmane.org> References: <426b510c0510230351k718c38ffr43273a31204414e6@mail.gmail.com>
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Hi Alex,
"Alex Pivovarov" <apivovarov@gmail.com> wrote in message
news:426b510c0510230351k718c38ffr43273a31204414e6@mail.gmail.com...
I made a class Constr with a constructor which run = new Constr().
public class Constr {
public int field1 = 1;
public Constr() {
Constr constr = new Constr();
}
public static void main(String args[]) {
Constr constr = new Constr();
}
}
------------- What I get after run: ----------------------
%java Constr
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
# SIGBUS (0xa) at pc=0x2b558260, pid=2878, tid=0x8060000
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0-p2-root_21_oct_2005_11_50
mixed mode)
# Problematic frame:
# J Constr.<init>()V
#
# An error report file with more information is saved as hs_err_pid2878.log
#
# If you would like to submit a bug report, please write
# a letter to freebsd-java@FreeBSD.org mailing list
#
Abort (core dumped)
--------------------- log----------------------------
hs_err_pid2878.log - see below
--------------- T H R E A D ---------------
Current thread (0x08060c00): JavaThread "main" [_thread_in_Java,
id=134610944]
siginfo:si_signo=10, si_errno=0, si_code=12, si_addr=0xbfafffec
Registers:
EAX=0x2d5a0980, EBX=0x00000000, ECX=0x2d5a0980, EDX=0x316ac248
ESP=0xbfb02fec, EBP=0xbfb03018, ESI=0x00000000, EDI=0x00000000
EIP=0x2b558260, EFLAGS=0x00010246
Top of Stack: (sp=0xbfb02fec)
0xbfb02fec: 2b558325 2d5a0980 00000000 280966d3
0xbfb02ffc: 00000000 2d5a0980 2d5a0970 bfb03048
0xbfb0300c: 2b5582e0 2d5a0970 316ac248 bfb03048
0xbfb0301c: 2b558325 2d5a0960 00000000 280966d3
0xbfb0302c: 00000000 2d5a0960 2d5a0950 bfb03078
0xbfb0303c: 2b5582e0 2d5a0950 316ac248 bfb03078
0xbfb0304c: 2b558325 2d5a0940 00000000 280966d3
0xbfb0305c: 00000000 2d5a0940 2d5a0930 bfb030a8
Instructions: (pc=0x2b558260)
0x2b558250: 90 90 90 90 90 90 90 3b 41 04 0f 85 20 ae fe ff
0x2b558260: 89 84 24 00 d0 ff ff 55 8b ec 83 ec 28 8b 75 08
Stack: [0xbfb00000,0xbfc00000), sp=0xbfb02fec, free space=11k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
code)
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
J Constr.<init>()V
...<more frames>...
--------------- P R O C E S S ---------------
Java Threads: ( => current thread )
0x08140c00 JavaThread "Low Memory Detector" daemon [_thread_blocked,
id=135532032]
0x08140800 JavaThread "CompilerThread0" daemon [_thread_blocked,
id=135531008]
0x08140400 JavaThread "Signal Dispatcher" daemon [_thread_blocked,
id=135529984]
0x08140000 JavaThread "Finalizer" daemon [_thread_blocked, id=135528960]
0x0806bc00 JavaThread "Reference Handler" daemon [_thread_blocked,
id=134659584]
=>0x08060c00 JavaThread "main" [_thread_in_Java, id=134610944]
Other Threads:
0x0805af00 VMThread [id=134658560]
0x0805aa00 WatcherThread [id=135655936]
VM state:not at safepoint (normal execution)
VM Mutex/Monitor currently owned by a thread: None
Heap
def new generation total 576K, used 326K [0x2d560000, 0x2d600000,
0x2da40000)
eden space 512K, 51% used [0x2d560000, 0x2d5a1a88, 0x2d5e0000)
from space 64K, 100% used [0x2d5f0000, 0x2d600000, 0x2d600000)
to space 64K, 0% used [0x2d5e0000, 0x2d5e0000, 0x2d5f0000)
tenured generation total 1408K, used 416K [0x2da40000, 0x2dba0000,
0x31560000)
the space 1408K, 29% used [0x2da40000, 0x2daa8008, 0x2daa8200,
0x2dba0000)
compacting perm gen total 8192K, used 1329K [0x31560000, 0x31d60000,
0x35560000)
the space 8192K, 16% used [0x31560000, 0x316ac508, 0x316ac600,
0x31d60000)
No shared spaces configured.
Dynamic libraries:
0x08048000 /usr/local/jdk1.5.0/bin/java
0x2808c000 /usr/lib/libpthread.so.1
0x280b0000 /lib/libc.so.5
0x2818b000 /usr/local/jdk1.5.0/jre/lib/i386/client/libjvm.so
0x285dd000 /lib/libm.so.3
0x285f9000 /usr/local/jdk1.5.0/jre/lib/i386/native_threads/libhpi.so
0x2860a000 /usr/local/jdk1.5.0/jre/lib/i386/libverify.so
0x28617000 /usr/local/jdk1.5.0/jre/lib/i386/libjava.so
0x28635000 /usr/local/jdk1.5.0/jre/lib/i386/libzip.so
0x28055000 /libexec/ld-elf.so.1
VM Arguments:
java_command: Constr
Environment Variables:
JAVA_HOME=/usr/local/jdk1.5.0
PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/games:/usr/local/sbin:/usr/local/bin:/usr/X11R6/bin:/home/alex/bin
LD_LIBRARY_PATH=/usr/local/jdk1.5.0/jre/lib/i386/client:/usr/local/jdk1.5.0/jre/lib/i386:/usr/local/jdk1.5.0/jre/../lib/i386
SHELL=/bin/csh
DISPLAY=:0.0
HOSTTYPE=FreeBSD
OSTYPE=FreeBSD
MACHTYPE=i386
--------------- S Y S T E M ---------------
OS:FreeBSD
uname:FreeBSD 5.4-RELEASE FreeBSD 5.4-RELEASE #0: Wed Oct 19 20:52:56
MSD 2005 root@st1.fqdn:/usr/src/sys/i386/compile/st1deb i386
rlimit: STACK 65536k, CORE infinity, NOFILE 7322
CPU:total 1 family 6, cmov, cx8, fxsr, mmx
Memory: 4k page, physical 469292k
vm_info: Java HotSpot(TM) Client VM (1.5.0-p2-root_21_oct_2005_11_50)
for freebsd-x86, built on Oct 21 2005 13:43:00 by root with gcc 3.4.2
[FreeBSD] 20040728
------------------------ P.S. --------------------------
in jdk1.4.2-p7 after run this class I just get stack overflow error.
%java TestCon
Exception in thread "main" java.lang.StackOverflowError
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This is a completely normal error. You are recursive constructing an object
in the constructor. This will always generate a StackOverflowError. Since
you are not catching Errors the VM can have a default implementation that
prints out a message (just like it does).
Kind regards,
Manfred Riem
mriem@manorrock.org
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