tornaia / jdk14-jpackage-1-35-vs-49

Repro case for a Java issue

https://bugs.openjdk.java.net/browse/JDK-8231924

The changes in JDK 14 via JDK-8212117 to align Class.forName with its specification may need follow on work in the core reflection code that obtains the Type of a field with parameterized type.

The sighting on core-libs-dev is here: https://mail.openjdk.java.net/pipermail/core-libs-dev/2019-October/062747.html

In the example, Service can be loaded but not linked. It may be that makeNamedType needs to catch NoClassDefFoundError so that TypeNotPresentException can be thrown.

Compile and run with jpackage+1-35

Output

c:\Private\jdk14-jpackage-1-35-vs-49>java Main
14-jpackage+1-35

Compile and run with jpackage+1-49

Output

c:\Private\jdk14-jpackage-1-35-vs-49>java Main
14-jpackage+1-49
Exception in thread "main" java.lang.NoClassDefFoundError: OptionalService
        at java.base/java.lang.Class.forName0(Native Method)
        at java.base/java.lang.Class.forName(Class.java:420)
        at java.base/sun.reflect.generics.factory.CoreReflectionFactory.makeNamedType(CoreReflectionFactory.java:114)
        at java.base/sun.reflect.generics.visitor.Reifier.visitClassTypeSignature(Reifier.java:125)
        at java.base/sun.reflect.generics.tree.ClassTypeSignature.accept(ClassTypeSignature.java:49)
        at java.base/sun.reflect.generics.visitor.Reifier.reifyTypeArguments(Reifier.java:68)
        at java.base/sun.reflect.generics.visitor.Reifier.visitClassTypeSignature(Reifier.java:138)
        at java.base/sun.reflect.generics.tree.ClassTypeSignature.accept(ClassTypeSignature.java:49)
        at java.base/sun.reflect.generics.repository.FieldRepository.computeGenericType(FieldRepository.java:90)
        at java.base/sun.reflect.generics.repository.FieldRepository.getGenericType(FieldRepository.java:82)
        at java.base/java.lang.reflect.Field.getGenericType(Field.java:266)
        at Main.main(Main.java:12)
Caused by: java.lang.ClassNotFoundException: OptionalService
        at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:602)
        at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
        ... 12 more