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8260010: UTF8ZipCoder not thread-safe since JDK-8243469

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Reviewed-by: lancea
This commit is contained in:
Claes Redestad 2021-01-20 23:42:29 +00:00
parent 8b95d9549e
commit 1f47de5f6a
1 changed files with 9 additions and 3 deletions
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12
src/java.base/share/classes/java/util/zip/ZipCoder.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2009, 2020, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2009, 2021, 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
@ -251,8 +251,14 @@ class ZipCoder {
while (off < end) {
byte b = a[off];
if (b < 0) {
// Non-ASCII, fall back to decoder loop
return normalizedHashDecode(h, a, off, end);
// Non-ASCII, fall back to decoding a String
// We avoid using decoder() here since the UTF8ZipCoder is
// shared and that decoder is not thread safe.
// We also avoid the JLA.newStringUTF8NoRepl variant at
// this point to avoid throwing exceptions eagerly when
// opening ZipFiles (exceptions are expected when accessing
// malformed entries.)
return normalizedHash(new String(a, end - len, len, UTF_8.INSTANCE));
} else {
h = 31 * h + b;
off++;