1 /*
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23 
24 /*
25  * @test TestShrinkToOneRegion.java
26  * @bug 8013872
27  * @requires vm.gc=="G1" | vm.gc=="null"
28  * @summary Shrinking the heap down to one region used to hit an assert
29  * @run main/othervm -XX:+UseG1GC -XX:G1HeapRegionSize=32m -Xmx256m TestShrinkToOneRegion
30  *
31  * Doing a System.gc() without having allocated many objects will shrink the heap.
32  * With a large region size we will shrink the heap to one region.
33  */
34 public class TestShrinkToOneRegion {
main(String[] args)35     public static void main(String[] args) {
36         System.gc();
37     }
38 }
39