If the JCK signature test is run in singleJVM mode without setting the
DISPLAY environment variable the JDK dumps core. See trace below.
This problem is easily reproduced by removing the JCK code in
build/tests/run-jck.sh that sets the environment variable and then
performing an "INITIALURL" build of api/SignatureTest/index.html

> SIGSEGV 11* segmentation violation
> si_signo [11]: SIGSEGV 11* segmentation violation
> si_errno [0]: Error 0
> si_code [1]: SEGV_MAPERR [addr: 0x0]
>
> stackpointer=EF191250
>
> Full thread dump:
> "JavaTest-SlaveThread-1" (TID:0xebcb7e90, sys_thread_t:0x19bfd0, state:R)
> prio=3
> at java.lang.StringBuffer.expandCapacity(Compiled Code)
> at java.lang.StringBuffer.append(Compiled Code)
> at
> javasoft.sqe.tests.api.SignatureTest.DefinitionFormat.removeModifier(Compiled
> Code)
> at
> javasoft.sqe.tests.api.SignatureTest.DefinitionFormat.getDefinition(Compiled
> Code)
> at javasoft.sqe.tests.api.SignatureTest.MemberEntry.<init>(Compiled
> Code)
> at
> javasoft.sqe.tests.api.SignatureTest.TableOfClass.createMembers(Compiled Code)
> at
> javasoft.sqe.tests.api.SignatureTest.ClassSignatureReader.nextClass(Compiled
> Code)
> at javasoft.sqe.tests.api.SignatureTest.SignatureTest.verify(Compiled
> Code)
> at javasoft.sqe.tests.api.SignatureTest.SignatureTest.run(Compiled
Code)
> at
> javasoft.sqe.javatest.lib.ExecJCKTestSameJVMCmd.executeOldTest(Compiled Code)
> at javasoft.sqe.javatest.lib.ExecJCKTestSameJVMCmd.run(Compiled Code)
> at javasoft.sqe.javatest.SlaveThread.executeCommand(Compiled Code)
> at javasoft.sqe.javatest.SlaveThread.handleRequest(Compiled Code)
> at javasoft.sqe.javatest.SlaveThread.run(Compiled Code)
> "JavaTest-SlaveThread-0" (TID:0xebcb8360, sys_thread_t:0x19bea8, state:CW)
> prio=3
> at java.net.SocketInputStream.socketRead(Native Method)
> at java.net.SocketInputStream.read(Compiled Code)
> at java.net.SocketInputStream.read(Compiled Code)
> at java.io.DataInputStream.readShort(Compiled Code)
> at javasoft.sqe.javatest.SlaveThread.handleRequest(Compiled Code)
> at javasoft.sqe.javatest.SlaveThread.run(Compiled Code)
> "Timer0" (TID:0xebcb8c20, sys_thread_t:0x188578, state:CW) prio=5
> at java.lang.Object.wait(Native Method)
> at java.lang.Object.wait(Compiled Code)
> at javasoft.sqe.javatest.util.Timer.run(Compiled Code)
> "Finalizer" (TID:0xebc984d8, sys_thread_t:0x60fd8, state:R) prio=8
*current
> thread*
> at java.awt.Font.pDispose(Native Method)
> at java.awt.Font.finalize(Compiled Code)
> at java.lang.ref.Finalizer.invokeFinalizeMethod(Native Method)
> at java.lang.ref.Finalizer.runFinalizer(Compiled Code)
> at java.lang.ref.Finalizer.access$1(Compiled Code)
> at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:129)
> "Reference Handler" (TID:0xebc98568, sys_thread_t:0x62630, state:CW)
prio=10
> at java.lang.Object.wait(Native Method)
> at java.lang.Object.wait(Compiled Code)
> at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:209)
> "Signal dispatcher" (TID:0xebc985a0, sys_thread_t:0x52348, state:CW)
prio=10
> "main" (TID:0xebc983f8, sys_thread_t:0x28b70, state:CW) prio=5
> at java.lang.Object.wait(Native Method)
> at java.lang.Object.wait(Compiled Code)
> at javasoft.sqe.javatest.Slave.run(Compiled Code)
> at javasoft.sqe.javatest.SlaveMain.main(Compiled Code)
> Monitor Cache Dump:
> java.lang.ref.Finalizer@EBB343D8/EC788668: owner "Finalizer" (0x60fd8, 1
> entry)
> java.lang.StringBuffer@EBB26040/EC7EF130: owner "JavaTest-SlaveThread-1"
> (0x19bfd0, 1 entry)
> Registered Monitor Dump:
> PCMap lock: <unowned>
> utf8 hash table: <unowned>
> JNI pinning lock: <unowned>
> JNI global reference lock: <unowned>
> BinClass lock: <unowned>
> Class linking lock: <unowned>
> System class loader lock: <unowned>
> Code rewrite lock: <unowned>
> Heap lock: <unowned>
> Dynamic loading lock: <unowned>
> Monitor IO lock: <unowned>
> User signal monitor: <unowned>
> Waiting to be notified:
> "Signal dispatcher" (0x52348)
> Child death monitor: <unowned>
> I/O monitor: <unowned>
> Alarm monitor: <unowned>
> Waiting to be notified:
> Internal clock thread (ef7a0c38)
> Thread queue lock: <unowned>
> Monitor registry: owner "Finalizer" (0x60fd8, 1 entry)
>

------ more info on reproducing problem, ssf, 8/12/98 -----------

cd jckj
sfleming% cat ../jckint/bringover
bringover -p /usr/sqe/workspaces/jck12-cup -w jck12-tests-int build src tests/index.html tests/api/index.html tests/api/SignatureTest.html tests/api/SignatureTest.java tests/api/jdk1_2.sig tests/api/jdk1_11.sig tests/api/jdk-1_1.sig tests/testsuite.html
sfleming% bringover -p /home/joew/jck -w jck12-tests-int build src tests/testsuite.html tests/api/index.html tests/api/SignatureTest
Parent workspace: /home/joew/jck
Child workspace: /jckj/jck12-tests-int

sfleming% pwd
/jckj
sfleming% ls
jck12-tests-int
sfleming% cd *int
sfleming% ls
Codemgr_wsdata build src tests
sfleming% cd build
sfleming% cd tests
sfleming% sccs edit run-jck.sh
1.9
new delta 1.10
98 lines
sfleming% ed run-jck.sh
2536
/DISPLAY
  *runtime* ) echo "Using DISPLAY=`uname -n`:0.0"
/
                jtRuntimeArgs="$jtRuntimeArgs -DDISPLAY=`uname -n`:0.0" ;;
/
  DISPLAY=`uname -n`:0.0 .d
w
2509
q
sfleming% sccs delget run-jck.sh
comments? unset DISPLAY
No id keywords (cm7)
1.10
0 inserted
1 deleted
97 unchanged
1.10
97 lines
No id keywords (cm7)
sfleming% pwd
/jckj/jck12-tests-int/build/tests
sfleming% cd ..
sfleming% setenv DISPLAY
sfleming% make INITIALURL=api/SignatureTest/index.html