Bug: humongous arrays allocations OOMEs

[Aleksey Shipilev]

Hi,

A very simple test:

public class Alloc {
	static final int SIZE = Integer.getInteger("size", 1_000_000);
	static Object sink;

	public static void main(String... args) throws Exception {
		for (int c = 0; c < 1000000; c++) {
			sink = new int[SIZE];
		}
	}
}

OOMEs after some critical array size:

$ java -XX:+UseShenandoahGC -Dsize=1  Alloc
<OK>
$ java -XX:+UseShenandoahGC -Dsize=1000  Alloc
<OK>
$ java -XX:+UseShenandoahGC -Dsize=1000000  Alloc
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
	at Alloc.main(Alloc.java:12)

Thanks,
-Aleksey