With tiger b07, vtest crashed with -client -Xcomp
Test machine: j2se-app.west
j2se-app# uname -a
SunOS j2se-app 5.9 Generic_112233-07 sun4u sparc SUNW,Sun-Fire
j2se-app# /usr/j2se_b07/bin/java -version
java version "1.5.0-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-beta-b07)
Java HotSpot(TM) Client VM (build 1.5.0-beta-b07, mixed mode)

core file is under /bt/VolanoTestrun.20029.-client-Xcomp

=>[1] _lwp_kill(0x0, 0x6, 0x0, 0xff33c000, 0x81010100, 0xff00), at 0xff31e444
  [2] raise(0x6, 0x0, 0xdc77eb48, 0x0, 0x1, 0xdc77e3c4), at 0xff2ccd88
  [3] abort(0x0, 0xdc77ebd8, 0x0, 0xfffffff8, 0x0, 0xdc77ec01), at 0xff2b5c70
  [4] os::abort(0x1, 0xfefb1c56, 0xdc77f460, 0xfefdd08d, 0xfefdd039, 0xff00), at 0xfef3409c
  [5] report_error(0xfefb1a20, 0x1, 0x1000, 0xfeffd8d4, 0x13d4, 0xfefd2e57), at 0xfee33a44
  [6] SignatureIterator::iterate_parameters(0xdc77f658, 0x1522, 0x0, 0xfefee000, 0x4000, 0x350b70), at 0xfecc88dc
  [7] Runtime1::prepare_interpreter_call(0x2f2c48, 0xf5536d10, 0x2f2c48, 0x2f2c48, 0x31e1b8, 0xfeccfb88), at 0xfed39ef4
  [8] 0xf986fbf8(0xed51b6b8, 0xf553b138, 0xf553c858, 0xed504eb0, 0xf5442ba8, 0xee230000), at 0xf986fbf7
  [9] 0xf9996de4(0xed51b6b8, 0xf553b138, 0xed504eb0, 0xee230000, 0x1, 0xfece2d50), at 0xf9996de3
  [10] 0xf995467c(0xed505648, 0x0, 0x1, 0xdc77f850, 0xdc77f848, 0x0), at 0xf995467b
  [11] 0xf9954400(0xed505660, 0x0, 0xdc77f964, 0xdc77fa04, 0x0, 0xfecdcd54), at 0xf99543ff
  [12] 0xf995291c(0xed5054c8, 0x0, 0xdc77fa0c, 0x1, 0xdc77fa04, 0xed511798), at 0xf995291b
  [13] 0xf994a30c(0xf553b138, 0x1, 0xee242968, 0xf98146c0, 0x0, 0x73), at 0xf994a30b
  [14] 0xf9976c54(0xed403d58, 0xffffffeb, 0xdc77fb2c, 0x0, 0x0, 0xdc77fa40), at 0xf9976c53
  [15] 0xf9805b10(0xed403d58, 0x0, 0x0, 0xf9815270, 0x0, 0xdc77fad0), at 0xf9805b0f
  [16] 0xf9912a08(0xed47d870, 0x0, 0x0, 0x39eca0, 0xfef3217c, 0xfecb6fc4), at 0xf9912a07
  [17] 0xf9800118(0xdc77fc2c, 0xdc77fe98, 0xa, 0xf5420118, 0xf980aae0, 0xdc77fdb8), at 0xf9800117
  [18] JavaCalls::call_helper(0xdc77fe90, 0xdc77fcf8, 0xdc77fdb0, 0x2f2c48, 0x2f2c48, 0xdc77fd08), at 0xfecc4330
  [19] JavaCalls::call_virtual(0xfefee000, 0x2f31e8, 0xdc77fda4, 0xdc77fda0, 0xdc77fdb0, 0x2f2c48), at 0xfecd3ce4
  [20] JavaCalls::call_virtual(0xdc77fe90, 0xdc77fe8c, 0xdc77fe84, 0xdc77fe7c, 0xdc77fe74, 0x2f2c48), at 0xfecd3ba0
  [21] thread_entry(0x2f2c48, 0x2f2c48, 0x2e5b48, 0x2f31e8, 0x31a638, 0xfecd38c4), at 0xfecd3b28
  [22] JavaThread::run(0x2f2c48, 0xffffffe2, 0xff00cdc8, 0xffff8000, 0x0, 0x0), at 0xfecd38ec
  [23] _start(0x2f2c48, 0x0, 0x0, 0x0, 0x0, 0x0), at 0xfecc2bb4

###@###.### 2003-05-29

The bug shows up more frequently in build 25 CMS run.
in atg test run with -client flag, it happened 9 times in 8 days
 frequency: 9/1762 = 0.5%
in volanomark test run with -client -Xcomp flag, it happened 14 times in 8 days
frequency: 14/172239 = 0.01%

###@###.### 2003-10-30

The failure happened more frequently in CMS run, ie, with the combination of
-client -Xcomp -XX:+UseConcMarkSweepGC
With b26, vtest failed 20 times in 72 hours ( 23610 iterations 20/23610 = 0.1% ) the flags used are: -client -Xcomp -XX:+UseConcMarkSweepGC

###@###.### 2003-11-03