After `test/jdk/java/util/TimeZone/CustomTzIDCheckDST.java` testcase was integrated, it failed on the AIX platform.
Error output STDERR: stdout: []; stderr: [Exception in thread "main" java.lang.RuntimeException: Got unexpected timezone information: Thu Aug 25 09:29:10 CEST 2022 at CustomTzIDCheckDST.runTZTest(CustomTzIDCheckDST.java:71) at CustomTzIDCheckDST.main(CustomTzIDCheckDST.java:50) ] By my investigation, `TZ=MEZ-1MESZ,M3.5.0,M10.5.0` timezone was changed to `Europe/Berlin` timezone on AIX platform. It seems this situation is happened because older AIX did not support `MEZ-1MESZ,M3.5.0,M10.5.0` timezone by TZ environment variable. https://www.ibm.com/support/pages/managing-time-zone-variable-posix AIX special code was implemented into `src/java.base/unix/native/libjava/TimeZone_md.c`. Current AIX supports `TZ=EST5EDT,M3.2.0/2:00:00,M11.1.0/2:00:00` style. I think implementation change is required. Some pre-submit tests are failed, but I think these are not related this change since modified parts are just for AIX platform. ------------- Commit messages: - 8292899: CustomTzIDCheckDST.java testcase failed on AIX platform Changes: https://git.openjdk.org/jdk/pull/10036/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=10036&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8292899 Stats: 17 lines in 1 file changed: 11 ins; 1 del; 5 mod Patch: https://git.openjdk.org/jdk/pull/10036.diff Fetch: git fetch https://git.openjdk.org/jdk pull/10036/head:pull/10036 PR: https://git.openjdk.org/jdk/pull/10036