ADDITIONAL SYSTEM INFORMATION :
windows:
Microsoft Windows 10
10.0.19042 N/A Build 19042
Intel(R) Core(TM) i5-8265U CPU @ 1.60GHz 1.80 GHz
Memory 8.00 GB

openjdk version "1.8.0_302"
OpenJDK Runtime Environment (Temurin)(build 1.8.0_302-b08)
OpenJDK 64-Bit Server VM (Temurin)(build 25.302-b08, mixed mode)

openjdk version "11.0.11" 2021-04-20
OpenJDK Runtime Environment AdoptOpenJDK-11.0.11+9 (build 11.0.11+9)
OpenJDK 64-Bit Server VM AdoptOpenJDK-11.0.11+9 (build 11.0.11+9, mixed mode)


A DESCRIPTION OF THE PROBLEM :
Hotspot(1.8.0_302 ,11.0.11) failed to throw UnsupportedClassVersionError on the abnormal version. The simplified test program can be found below.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Just run the given test program.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
UnsupportedClassVersionError
ACTUAL -
Version: 45 ClassFormatError
Version: 46 ClassFormatError
Version: 47 ClassFormatError
Version: 48 ClassFormatError
Version: 49 Test Pass
Version: 50 Test Pass
Version: 51 Test Pass
Version: 52 Test Pass
Version: 65581 ClassFormatError
Version: 65582 ClassFormatError
Version: 65583 ClassFormatError
Version: 65584 ClassFormatError
Version: 65585 Test Pass
Version: 65586 Test Pass
Version: 65587 Test Pass
Version: 131117 ClassFormatError
Version: 131118 ClassFormatError
Version: 131119 ClassFormatError
Version: 131120 ClassFormatError
Version: 131121 Test Pass
Version: 131122 Test Pass
Version: 131123 Test Pass
Version: 196653 ClassFormatError
Version: 196654 ClassFormatError
Version: 196655 ClassFormatError
Version: 196656 ClassFormatError
Version: 196657 Test Pass
Version: 196658 Test Pass
Version: 196659 Test Pass

---------- BEGIN SOURCE ----------
import jdk.internal.org.objectweb.asm.ClassWriter;

public class Test {

    public static void main(String[] var1) throws Throwable {

        for (int i = 0; i < 200000; i++){

            try {
                String name = "UM:}<u";
                ClassWriter classWriter = new ClassWriter(0);
                classWriter.visit(i, 1, name, (String)null, "java/lang/Object", (String[])null);
                makeClassBytesLoader(classWriter.toByteArray(), name).loadClass(name);

                System.err.println("Version: " + i + " " + "Test Pass");
            } catch (Error e){

                if (e.toString().contains("UnsupportedClassVersionError")){
// System.err.println("Version: " + i + " " + "UnsupportedClassVersionError");
                } else if (e.toString().contains("ClassFormatError")){
                    System.err.println("Version: " + i + " " + "ClassFormatError");
                }
            }
        }
    }

    public static ClassLoader makeClassBytesLoader(final byte[] classBytes, final String className) {
        return new ClassLoader() {
            @Override
            protected Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundException {

                if (!name.equals(className))
                    return super.loadClass(name, resolve);
                return defineClass(className, classBytes, 0, classBytes.length);
            }
        };
    }
}
---------- END SOURCE ----------