Hi All, This issue is continuation to bug 8201540 (Extend the set of supported charsets in java.base on AIX) in which we have moved default charsets of most of the locales supported by Operating System to java.base module thus enabling OpenJDK on those locales for AIX platform.
As part of that, charsets for locales Ja_JP (IBM-943) and Zh_TW (big5) also have been moved. However, corresponding charsets mapped in Java is not correct for them on AIX. Following are the details: 1. IBM-943 [1] for locale Ja_JP should be mapped to IBM-943C [2] Fundamental difference between IBM-943 and IBM-943C is that IBM-943C is ASCII compatible which means code points 'yen' and 'overline' of IBM-943 is replaced with 'backslash' and 'tilde' from ASCII character set. 2. Big5 for locale Zh_TW should be mapped to IBM-950 [3] I've attached simple test program to print the default charset along with fix for this issue. When run test program (PrintDefaultCharset) with IBM JDK 8 (on AIX) for locales Ja_JP & Zh_TW, following is output. -bash-4.4$ LANG=Ja_JP ~/JDKs/IBM/80/ON/sdk/jre/bin/java PrintDefaultCharset LANG = Ja_JP Default charset = x-IBM943C file.encoding = IBM-943C sun.jnu.encoding = IBM-943C -bash-4.4$ LANG=Zh_TW ~/JDKs/IBM/80/ON/sdk/jre/bin/java PrintDefaultCharset LANG = Zh_TW Default charset = x-IBM950 file.encoding = IBM-950 sun.jnu.encoding = IBM-950 Same test run with openJDK 11 gives following output -bash-4.4$ LANG=Ja_JP ~/jdk/bin/java PrintDefaultCharset LANG = Ja_JP Default charset = x-IBM943 file.encoding = IBM-943 sun.jnu.encoding = IBM-943 -bash-4.4$ LANG=Zh_TW ~/jdk/bin/java PrintDefaultCharset LANG = Zh_TW Default charset = Big5 file.encoding = big5 sun.jnu.encoding = big5 I will get webrev hosted in http://cr.openjdk.java.net for this change and send it for review once JIRA bug is created. [1] http://demo.icu-project.org/icu-bin/convexp?conv=ibm-943_P130-1999&s=JAVA [2] http://demo.icu-project.org/icu-bin/convexp?conv=ibm-943_P15A-2003&s=ALL [3] https://www.ibm.com/support/knowledgecenter/en/ssw_aix_71/com.ibm.aix.nlsgdrf/big5.htm Thanks, Bhaktavatsal Reddy
