提交 060b01b5 编写于 作者: C chegar

8134424: BlockDataInputStream.readUTFBody: size local StringBuffer with the given length

Reviewed-by: rriggs, shade
上级 4163a25e
......@@ -3403,7 +3403,15 @@ public class ObjectInputStream
* utflen bytes.
*/
private String readUTFBody(long utflen) throws IOException {
StringBuilder sbuf = new StringBuilder();
StringBuilder sbuf;
if (utflen > 0 && utflen < Integer.MAX_VALUE) {
// a reasonable initial capacity based on the UTF length
int initialCapacity = Math.min((int)utflen, 0xFFFF);
sbuf = new StringBuilder(initialCapacity);
} else {
sbuf = new StringBuilder();
}
if (!blkmode) {
end = pos = 0;
}
......
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