A DESCRIPTION OF THE PROBLEM :
Inconsistent behavior between different OpenJDK versions and different OS under vm option AliasLevel

First, when providing an abnormal value to the "AliasLevel" parameter along with a non-existent test, the hotspot of OpenJDK8 crashes on macOS.

For example, If we run this program on Ubuntu with OpenJDK8 using the following command:

```
./OpenJDK8U-jre_x64_linux_hotspot_8u382b05/bin/java -XX:AliasLevel=2147483647 NonExistProgram
```

The output of the above command is:

```
Error: Could not find or load main class NonExistProgram
```

However, running the following command on macOS with OpenJDK8:

```
./jre1.8.0_371.jre/Contents/Home/bin/java -XX:AliasLevel=2147483647 NonExistProgram
```

The hotspot will crash and output the following:

```
[thread 22019 also had an error]# A fatal error has been detected by the Java Runtime Environment:

[thread 32515 also had an error]#

# Internal Error (compile.cpp:1571), pid=52150, tid=0x0000000000005803
# Error: Unimplemented()
#
# JRE version: Java(TM) SE Runtime Environment (8.0_371) (build 1.8.0_371-b11)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.371-b11 mixed mode bsd-amd64 compressed oops)
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# An error report file with more information is saved as:
# path/hs_err_pid52150.log
Error: Could not find or load main class NonExistProgram
#
# Compiler replay data is saved as:
# path/replay_pid52150.log
#
# If you would like to submit a bug report, please visit:
# http://bugreport.java.com/bugreport/crash.jsp
#
```

macOS version:

```
Software:

    System Software Overview:

      System Version: macOS 13.2 (22D49)
      Kernel Version: Darwin 22.3.0
      Boot Volume: Macintosh HD
      Boot Mode: Normal
      Computer Name: MacBook Pro
      User Name: MacBook
      Secure Virtual Memory: Enabled
      System Integrity Protection: Enabled
      Time since boot: 1 day, 2 hours, 19 minutes

Hardware:

    Hardware Overview:

      Model Name: MacBook Pro
      Model Identifier: MacBookPro18,1
      Model Number: MK193CH/A
      Chip: Apple M1 Pro
      Total Number of Cores: 10 (8 performance and 2 efficiency)
      Memory: 16 GB
      System Firmware Version: 8419.80.7
      OS Loader Version: 8419.80.7
      Activation Lock Status: Disabled
```

Secondly, the output of running a test program with an abnormal value for "AliasLevel" is also inconsistent across different versions.

Here's an example of the test program:

```
public class AliasLevelTest {
    public static void main(String[] args) {
        System.out.println("Success Loaded!");
    }
}
```

If we run this program on Ubuntu with OpenJDK11 using the following command:

```
./OpenJDK11U-jre_x64_linux_hotspot_11.0.20.1_1/bin/java -XX:AliasLevel=2147483647 AliasLevelTest
```

The expect output is:

```
intx AliasLevel=2147483647 is outside the allowed range [ 0 ... 3 ]
Improperly specified VM option 'AliasLevel=2147483647'
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
```

However, when running the same program on Ubuntu with OpenJDK8 using the following command:

```
./OpenJDK8U-jre_x64_linux_hotspot_8u382b05/bin/java -XX:AliasLevel=2147483647 AliasLevelTest
```

The output of the above command is:

```
Success Loaded!
```

It is evident that the behavior varies between different OpenJDK versions and different operating systems, leading to crashes and inconsistent error messages.


FREQUENCY : always