JDK8: Two failing charset tests (IBM943) in the NIO suite on some systems

The following two tests fail on Amazon Linux 2023 but it's not limited to that platform (Verified on Debian12 and Ubuntu 24.04):

sun/nio/cs/TestCharsetMapping.java - Not immediately obvious which is causing the real failure as there are a few "Error" references but it could be:

testing: x-IBM943        
string de/encoding
new String()
String.getBytes()
1 byte/char
decode
decode (direct)
2 bytes/char
decode
decode (direct)
1 byte/char
encode
encode (direct)
2 bytes/char
encode
  Error: U+8ec0 --> 3f3f, expected 8beb
  Error: U+8141 --> 3f3f, expected e445
  Error: U+6805 --> 3f3f, expected 8df2
  Error: U+7006 --> 3f3f, expected 93c0
  Error: U+8346 --> 3f3f, expected 8c74
  Error: U+7e48 --> 3f3f, expected e379
  Error: U+840a --> 3f3f, expected 9789
  Error: U+56ca --> 3f3f, expected 9458
  Error: U+ff0d --> 3f3f, expected 817c
  Error: U+688e --> 3f3f, expected 9e94
  Too many errors, giving up
encode (direct)
  Error: U+8ec0 --> 3f3f, expected 8beb
  Error: U+8141 --> 3f3f, expected e445
  Error: U+6805 --> 3f3f, expected 8df2
  Error: U+7006 --> 3f3f, expected 93c0
  Error: U+8346 --> 3f3f, expected 8c74
  Error: U+7e48 --> 3f3f, expected e379
  Error: U+840a --> 3f3f, expected 9789
  Error: U+56ca --> 3f3f, expected 9458
  Error: U+ff0d --> 3f3f, expected 817c
  Error: U+688e --> 3f3f, expected 9e94
  Too many errors, giving upThe

sun/nio/cs/TestIBMBugs.java - the failure here would be consistent with the error above with an IBM943 encoding failure:


java.lang.Exception: x-IBM943 failed to encode
at TestIBMBugs.bug8235834(TestIBMBugs.java:225)
at TestIBMBugs.main(TestIBMBugs.java:242)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:298)
at java.lang.Thread.run(Thread.java:750)

JavaTest Message: Test threw exception: java.lang.Exception JavaTest Message: shutting down test

adoptium / aqa-tests

JDK8: Two failing charset tests (IBM943) in the NIO suite on some systems #5381