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8186654: Poor quality of sun.security.util.Cache.EqualByteArray.hashCode()

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Reviewed-by: coffeys
This commit is contained in:
Ivan Gerasimov 2017-10-04 01:08:36 -07:00
parent 4560687884
commit 9c1b0103b3
2 changed files with 47 additions and 7 deletions
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10
src/java.base/share/classes/sun/security/util/Cache.java
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@ -164,7 +164,7 @@ public abstract class Cache<K,V> {
public static class EqualByteArray {
private final byte[] b;
private volatile int hash;
private int hash;
public EqualByteArray(byte[] b) {
this.b = b;
@ -172,12 +172,8 @@ public abstract class Cache<K,V> {
public int hashCode() {
int h = hash;
if (h == 0) {
h = b.length + 1;
for (int i = 0; i < b.length; i++) {
h += (b[i] & 0xff) * 37;
}
hash = h;
if (h == 0 && b.length > 0) {
hash = h = Arrays.hashCode(b);
}
return h;
}