8260934: java/lang/StringBuilder/HugeCapacity.java fails without Compact Strings
Reviewed-by: iklam
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@ -27,14 +27,20 @@
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* @summary Capacity should not get close to Integer.MAX_VALUE unless
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* necessary
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* @requires (sun.arch.data.model == "64" & os.maxMemory >= 6G)
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* @run main/othervm -Xms5G -Xmx5G HugeCapacity
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* @run main/othervm -Xms5G -Xmx5G -XX:+CompactStrings HugeCapacity true
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* @run main/othervm -Xms5G -Xmx5G -XX:-CompactStrings HugeCapacity false
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*/
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public class HugeCapacity {
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private static int failures = 0;
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public static void main(String[] args) {
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testLatin1();
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if (args.length == 0) {
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throw new IllegalArgumentException("Need the argument");
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}
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boolean isCompact = Boolean.parseBoolean(args[0]);
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testLatin1(isCompact);
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testUtf16();
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testHugeInitialString();
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testHugeInitialCharSequence();
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@ -43,11 +49,12 @@ public class HugeCapacity {
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}
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}
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private static void testLatin1() {
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private static void testLatin1(boolean isCompact) {
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try {
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int divisor = isCompact ? 2 : 4;
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StringBuilder sb = new StringBuilder();
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sb.ensureCapacity(Integer.MAX_VALUE / 2);
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sb.ensureCapacity(Integer.MAX_VALUE / 2 + 1);
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sb.ensureCapacity(Integer.MAX_VALUE / divisor);
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sb.ensureCapacity(Integer.MAX_VALUE / divisor + 1);
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} catch (OutOfMemoryError oom) {
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oom.printStackTrace();
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failures++;
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