runtime/valhalla/inlinetypes/ValuePreloadTest.java fails with following compilation error:

java.lang.UnsupportedClassVersionError: Preview features are not enabled for jdk/test/lib/process/OutputBuffer (class file version 67.65535). Try running with '--enable-preview'
at java.base/java.lang.ClassLoader.defineClass1(Native Method)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1026)
at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150)
at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:862)
at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:760)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:681)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:639)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:528)
at jdk.test.lib.process.OutputAnalyzer.<init>(OutputAnalyzer.java:68)
at ValuePreloadTest.checkFor(ValuePreloadTest.java:50)
at ValuePreloadTest.main(ValuePreloadTest.java:57)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at com.sun.javatest.regtest.agent.MainWrapper$MainTask.run(MainWrapper.java:138)
at java.base/java.lang.Thread.run(Thread.java:1575)

JavaTest Message: Test threw exception: java.lang.UnsupportedClassVersionError: Preview features are not enabled for jdk/test/lib/process/OutputBuffer (class file version 67.65535). Try running with '--enable-preview'

This happens because the test is launched with "run driver", and jtreg stopped passing the --enable-preview flag when a test is launched this way.