JDK-8218265 : java/util/Base64/TestEncodingDecodingLength.java failing
  • Type: Bug
  • Component: core-libs
  • Sub-Component: java.util
  • Affected Version: 13
  • Priority: P2
  • Status: Closed
  • Resolution: Fixed
  • Submitted: 2019-02-03
  • Updated: 2022-12-21
  • Resolved: 2019-02-06
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JDK 13
13 b07Fixed
Related Reports
Relates :  
JDK-8210583 - Base64.Encoder incorrectly throws NegativeArraySizeException
Description
The test added by JDK-8210583 always fails:

java.lang.OutOfMemoryError: Requested array size exceeds VM limit
	at TestEncodingDecodingLength.main(TestEncodingDecodingLength.java:41)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:567)
	at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
	at java.base/java.lang.Thread.run(Thread.java:835)


40:         int size = Integer.MAX_VALUE - 2;
41:        byte[] inputBytes = new byte[size];

Unclear whether this is platform/configuration specific as a standalone test on linux-x64 can execute the above okay.
Comments
Test with jdk13 build 32 on windows10 x64 and Linux x64, passed.
07-08-2019
URL: http://hg.openjdk.java.net/jdk/jdk/rev/c6e8196e4b54 User: nishjain Date: 2019-02-06 08:28:03 +0000
06-02-2019
Disabling compressedOOPs reduces the maximum array size to Integer.MAX_VALUE - 3.
04-02-2019
As fixed by JDK-8210583, Decoder.decode needed Integer.MAX_VALUE - 2 as an input array size to test the overflow condition, but now it is observed that only the intermediate value overflows while decoding, not the final value, so an issue is filed to update it (JDK-8217969), with this fix, Integer.MAX_VALUE - 2 can be changed to Integer.MAX_VALUE - 8.
04-02-2019
I don't know what configurations allows or disallow creating an array of size Integer.MAX_VALUE-2 but historically we've used Integer.MAX_VALUE-8 as a limit that avoids issues like this. If needed, we can exclude this test until the conditions are better understood.
03-02-2019