test/gc/g1/TestShrinkToOneRegion.java

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  /*
!  * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
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  /*
!  * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
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   */
  
  /*
   * @test TestShrinkToOneRegion.java
   * @bug 8013872
+  * @requires vm.gc=="G1" | vm.gc=="null"
   * @summary Shrinking the heap down to one region used to hit an assert
   * @run main/othervm -XX:+UseG1GC -XX:G1HeapRegionSize=32m -Xmx256m TestShrinkToOneRegion
   *
   * Doing a System.gc() without having allocated many objects will shrink the heap.
   * With a large region size we will shrink the heap to one region.