ADDITIONAL SYSTEM INFORMATION :
Software:
    System Software Overview:
      System Version: Ubuntu 22.04.4 LTS
      Kernel Version: 4.15.0-45-generic
      Boot Volume: overlay
      Boot Mode: Legacy BIOS
      Computer Name: 899309ef3feb
      User Name: root
      Time since boot: 21 weeks, 2 days, 6 hours, 47 minutes

Hardware:
    Hardware Overview:
      Model: Unknown
      Model Identifier: Unknown
      Chip: Intel(R) Xeon(R) CPU E5-2640 v4 @ 2.40GHz
      Total Number of Cores: 40 (10 physical x 2 logical)
      Memory: 125Gi
      System Firmware Version: Unknown

A DESCRIPTION OF THE PROBLEM :
The HotSpot JVM crashes with a segmentation fault (SIGSEGV) when C2-compiled code attempts to call the .get() method of a WeakReference subclass where the instance is null. The crash is bypassed in interpreted mode (-Xint), indicating a miscompilation or an issue in the C2 intrinsic for Reference.get().

REGRESSION : Java version that customer using for 11.0.30, 17.0.18



STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. javac Test.java
2. java -Xcomp Test-> CRASH
3. java -Xint Test-> Program finishes successfully.

---------- BEGIN SOURCE ----------
import java.lang.ref.WeakReference;
class Test {
    static final class MyReference<T> extends WeakReference<T> {
        public MyReference(T referent) {
            super(referent);
        }
    }

    static void test(MyReference r) {
        try {
            r.get();
        } catch (Exception e) {
        }
    }

    public static void main(String[] args) {
        MyReference<String[]> obj = new MyReference<>(args);
        for (int i = 0; i < 50000; ++i) {
            test(null);
        }
    }
}
---------- END SOURCE ----------

FREQUENCY :
ALWAYS