Some AccessFlag parsing methods throw IAE because a flag mask is not valid in a location. However, there is no easy way to check what flag mask bits or what flags are valid for a location. We need such APIs to check, specific to each class file format version.
Also in the investigation, it's noted that `ACC_SYNTHETIC` is incorrectly represented - it is available since release 5.0 instead of release 7. This bug is fixed together for implementation simplicity. The new methods are all in `AccessFlag.Location`: - `Set<AccessFlag> flags()` - `int flagsMask()` - `Set<AccessFlag> flags(ClassFileFormatVersion)` - `int flagsMask(ClassFileFormatVersion)` Also there is some simplification to `AccessFlag` itself to remove the anonymous classes, which should be more startup-friendly. Testing: Tier 1-3 ------------- Commit messages: - ClassLoading order, Typos in NPE test - 8347471: Provide valid flags and mask in AccessFlag.Location Changes: https://git.openjdk.org/jdk/pull/23095/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=23095&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8347471 Stats: 548 lines in 7 files changed: 282 ins; 137 del; 129 mod Patch: https://git.openjdk.org/jdk/pull/23095.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/23095/head:pull/23095 PR: https://git.openjdk.org/jdk/pull/23095
