ADDITIONAL SYSTEM INFORMATION :
wsl2-ubuntu 22.04
Linux 5.15.167.4-microsoft-standard-WSL2 #1 SMP Tue Nov 5 00:21:55 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux

java version "1.8.0_451"
Java(TM) SE Runtime Environment (build 1.8.0_451-b10)
Java HotSpot(TM) 64-Bit Server VM (build 25.451-b10, mixed mode)

java version "11.0.27" 2025-04-15 LTS
Java(TM) SE Runtime Environment 18.9 (build 11.0.27+8-LTS-232)
Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.27+8-LTS-232, mixed mode)

A DESCRIPTION OF THE PROBLEM :
The following test program will crash Java Runtime Environment in JDK 8. However, it executes successfully in JDK 11.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Using JDK 8, run the following command:
```
javac Test.java
java Test
```

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The program should throw an exception.
ACTUAL -
The program will crash Java Runtime Environment.
```
#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x00007f1924471a24, pid=4866, tid=0x00007f1923bd4640
#
# JRE version: Java(TM) SE Runtime Environment (8.0_451) (build 1.8.0_451-b10)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.451-b10 mixed mode linux-amd64 compressed oops)
# Problematic frame:
# V [libjvm.so+0x7b5a24] Klass::external_name() const+0x14
...
```

---------- BEGIN SOURCE ----------
public class Test {
    public static void main(String[] args) {
        try {
            java.lang.reflect.Field field = sun.misc.Unsafe.class.getDeclaredField("theUnsafe");
            field.setAccessible(true);
            sun.misc.Unsafe unsafe = (sun.misc.Unsafe) field.get(null);
            Class<?> hostClass = int.class;
            byte[] bytecode = new byte[] { (byte) 0x00, (byte) 0x01, (byte) 0x02, (byte) 0x03 };
            Object instance = unsafe.defineAnonymousClass(hostClass, bytecode, null);
        } catch (Exception e) {
        }
    }
}
---------- END SOURCE ----------