Doug Lea writes:

"I get vm crashes on solaris and linux uniprocessors only(?!) on b55
when running a test program. To replicate, unpack, compile, and then
run
  java -server IntMapCheck ConcurrentSkipListMap 1000 1000

Sometimes it crashes, sometimes it causes an assertion error
to be thrown, sometimes it runs to completion."

I can reproduce this problem on my Uniprocessor Red Hat AS 2.1 x86 Linux box:

$ jver 1.5 javac *.java;jver 1.5 java -server IntMapCheck ConcurrentSkipListMap 1000 1000
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
Testing ConcurrentSkipListMap trials: 1000 size: 1000
Exception in thread "main" java.lang.Error: Failed Assertion
at IntMapCheck.reallyAssert(IntMapCheck.java:19)
at IntMapCheck.t4(IntMapCheck.java:141)
at IntMapCheck.test(IntMapCheck.java:487)
at IntMapCheck.runTest(IntMapCheck.java:78)
at IntMapCheck.main(IntMapCheck.java:54)
$ jver 1.5 javac *.java;jver 1.5 java -server IntMapCheck ConcurrentSkipListMap 1000 1000
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
Testing ConcurrentSkipListMap trials: 1000 size: 1000
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
# SIGSEGV (0xb) at pc=0x00000000, pid=5584, tid=1026
#
# Java VM: Java HotSpot(TM) Server VM (1.5.0-beta3-b55 mixed mode)
# Problematic frame:
# C 0x00000000
#
# An error report file with more information is saved as hs_err_pid5584.log
#
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
#


###@###.### 2004-06-15