The CDS classlist is generated with the `-XX:DumpLoadedClassList` option, which writes the name of the classes as they are being loaded. Since class loading order is affected by thread switching, the classes may appear in a non-deterministic order.
Previously, the build compare script would sort the classlist before comparing. Since https://bugs.openjdk.java.net/browse/JDK-8272113, each class in the classlist has a new ID, so even after sorting, the contents would differ: $ diff classlist.1 classlist.2 207,208c207,208 < jdk/internal/misc/VM id: 201 < jdk/internal/util/SystemProps id: 202 --- > jdk/internal/misc/VM id: 202 > jdk/internal/util/SystemProps id: 201 The fix is to strip the id before doing the file comparison. Tested with: `mach5 remote-build -b linux-aarch64-cmp-baseline,macosx-x64-cmp-baseline,linux-x64-cmp-baseline,linux-arm32-open-cmp-baseline,windows-x64-cmp-baseline` ------------- Commit messages: - 8272113: Build compare script fails with differences in classlist Changes: https://git.openjdk.java.net/jdk/pull/5041/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5041&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8272113 Stats: 8 lines in 1 file changed: 6 ins; 0 del; 2 mod Patch: https://git.openjdk.java.net/jdk/pull/5041.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/5041/head:pull/5041 PR: https://git.openjdk.java.net/jdk/pull/5041
