jdk/src/demo/share/jvmti/ directory has been removed by JEP 298(JDK-8164813). in order to continue running jdk/test/demo/jvmti tests, native part of tests should be restored in test sources, and the tests should be updated to use jtreg native tests support.

the affected tests are
test/demo/jvmti/gctest/Gctest.java
test/demo/jvmti/heapTracker/HeapTrackerTest.java
test/demo/jvmti/heapViewer/HeapViewerTest.java
test/demo/jvmti/minst/MinstTest.java
test/demo/jvmti/versionCheck/FailsWhenJvmtiVersionDiffers.java
test/demo/jvmti/waiters/WaitersTest.java

 .jtr file for the reference:

#section:main
----------messages:(4/130)----------
command: main Gctest BigHello
reason: User specified action: run main Gctest BigHello
Mode: othervm
elapsed time (seconds): 2.24
----------configuration:(0/0)----------
----------System.out:(12/1135)----------
Starting: /scratch/home/aginfra/CommonData/TEST_JAVA_HOME/bin/java -cp /scratch/home/aginfra/sandbox/results/workDir/classes/0/demo/jvmti/gctest -Dtest.classes=/scratch/home/aginfra/sandbox/results/workDir/classes/0/demo/jvmti/gctest -Xcheck:jni -Xverify:all -agentpath:/scratch/home/aginfra/CommonData/TEST_JAVA_HOME/demo/jvmti/gctest/lib/libgctest.so BigHello
Error occurred during initialization of VM
Could not find agent library /scratch/home/aginfra/CommonData/TEST_JAVA_HOME/demo/jvmti/gctest/lib/libgctest.so in absolute path, with error: /scratch/home/aginfra/CommonData/TEST_JAVA_HOME/demo/jvmti/gctest/lib/libgctest.so: cannot open shared object file: No such file or directory
Exit code is 1
<beginning of Error Stream buffer>

<end of buffer>
<beginning of Input Stream buffer>
Error occurred during initialization of VM
Could not find agent library /scratch/home/aginfra/CommonData/TEST_JAVA_HOME/demo/jvmti/gctest/lib/libgctest.so in absolute path, with error: /scratch/home/aginfra/CommonData/TEST_JAVA_HOME/demo/jvmti/gctest/lib/libgctest.so: cannot open shared object file: No such file or directory

<end of buffer>
----------System.err:(15/965)----------
java.lang.RuntimeException: Test failed - exit return code non-zero (exitStatus==1)
at DemoRun.runit(DemoRun.java:196)
at DemoRun.runit(DemoRun.java:109)
at Gctest.main(Gctest.java:41)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:563)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:115)
at java.base/java.lang.Thread.run(Thread.java:844)

JavaTest Message: Test threw exception: java.lang.RuntimeException: Test failed - exit return code non-zero (exitStatus==1)
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.lang.RuntimeException: Test failed - exit return code non-zero (exitStatus==1)