ADDITIONAL SYSTEM INFORMATION :
java -version
openjdk version "25-internal" 2025-09-16
OpenJDK Runtime Environment (fastdebug build 25-internal-adhoc.user.jdk)
OpenJDK 64-Bit Server VM (fastdebug build 25-internal-adhoc.user.jdk, mixed mode)

A DESCRIPTION OF THE PROBLEM :
When I used the JVM compiled from the OpenJDK source code obtained from GitHub to run the following code, the JVM crashed. After enabling the -Xint option to disable JIT, the issue no longer occurred. Based on the location of the assert, we suspect that there is a bug in the C2 compiler of the JIT.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
javac Test.java & java Test

ACTUAL -
A crash may occur during runtime (about once in every three runs).

---------- BEGIN SOURCE ----------
class Test {
    static int[] iArrFld = new int[400];

    static int method9() {
        int[] more = { 94 };
        java.util.function.Predicate<Integer> check = m -> m == 0;
        java.util.function.IntConsumer decrement = x -> more[0]--;
        java.util.function.BooleanSupplier innerLoop = () -> {
            while (!check.test(more[0]))
                decrement.accept(0);
            return true;
        };
        innerLoop.getAsBoolean();
        java.util.function.BooleanSupplier process = () -> check.test(more[0]);
        while (!process.getAsBoolean()) {
        }
        return 0;
    }

    public static void main(String[] strArr) {
        int i14 = 1;
        do {
            iArrFld[i14] = 211;
            for (int i15 = 1; i15 < 4; ++i15)
                i14 = Test.method9();
        } while (i14 < 5);
    }
}

---------- END SOURCE ----------