Mode : -Xmixed
Platform : linux RH 6.2, win_NT
JDK : /net/sqesvr.eng/export/vsn/VM/merlin/weekahead/jdk/latest/{OS}

Steps to reproduce
1) cd /net/sqesvr.eng/export/vsn/GammaBase/Bugs/{Buid}
2) ./rerun.sh

{OR}

make a `runList.dat` file with the following testcases and run next command-line.

$TESTBASE/testbase/testbase_ss/classes/misc/benchmarks/SumSpeed;$TESTBASE/testbase/testbase_ss/classes//misc/benchmarks/classes SumSpeed
$TESTBASE/testbase/testbase_ss/classes/misc/threads/only_1.2/ThreadInterruptedNotStarted ThreadInterruptedNotStarted
$TESTBASE/testbase/testbase_ss/classes/misc/threads/CancellableThreadTest;$TESTBASE/testbase/testbase_ss/classes//misc/threads/classes CancellableThreadTest

/net/sqesvr.eng/export/vsn/VM/merlin/weekahead/jdk/latest/linux-i386/bin/java -h
otspot -Xcomp -Xss4m -XX:CompileThreshold=3 -XX:+OnStackReplaceALot -XX:TargetS
urvivorRatio=10 -XX:MarkSweepDeadRatio=1 -XX:PermMarkSweepDeadRatio=5 -XX:MarkSw
eepAlwaysCompactCount=1 -XX:NmethodSweepFraction=1 -XX:-ShowMessageBoxOnError -X
X:+ExitOnFullCodeCache -classpath /net/sqesvr.eng/export/vsn/VM/testbase/runThes
e/classes $* runThese -thread 2 -repeat 1 -iter 1 -D:gc=5 -D:TESTBASE=/net/sqesv
r.eng/export/vsn/VM/testbase/runThese/tests -runList runList.dat


Output:
java version "1.4.0-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-beta-b61)
Java HotSpot(TM) Client VM (build 20010425110018.jcoomes.baseline-debug, mixed mode)

# HotSpot Virtual Machine Error, assertion failure
# Please report this error at
# http://java.sun.com/cgi-bin/bugreport.cgi
#
# assert(pc_desc != __null, "scopeDesc must exist")
#
# Error ID: /net/jano.eng/export/disk05/hotspot/imgr/ws/20010425110018.jcoomes.baseline/src/share/vm/runtime/vframe.cpp, 442
#
# Problematic Thread: prio=1 tid=0x0x81cc328 nid=0x32f1 runnable
#
Current thread is 0x2c0c

****************************************************************
NOTE: Test passes with -Xcomp , -Xint modes on linux & win32 boxes and produces os.cpp, 727 Error on solx86
****************************************************************
java version "1.4.0-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-beta-b61)
Java HotSpot(TM) Client VM (build 20010425110018.jcoomes.baseline-debug, mixed mode)

Unexpected Signal : 11 occurred at PC=0xDA9BE5D9
Function=sum1 (compiled Java code)
Library=(N/A)

Current Java thread:

Local Time = Fri Apr 27 18:05:40 2001
Elapsed Time = 19
#
# HotSpot Virtual Machine Error : 11
# Error ID : /net/jano.eng/export/disk05/hotspot/imgr/ws/20010425110018.jcoomes.baseline/src/share/vm/runtime/os.cpp, 727
# Please report this error at
# http://java.sun.com/cgi-bin/bugreport.cgi
#
# Java VM: Java HotSpot(TM) Client VM (20010425110018.jcoomes.baseline-debug mixed mode)
#
# An error report file has been saved as hs_err_pid29316.log.
# Please refer to the file for further information.
#
Dumping core....