The old core reflection implementation generates dynamic classes that are special cases in the VM to bypass bytecode verification to workaround various issues [1] [2] [3] uncovered over time.
The old core reflection implementation was [removed in JDK 22](https://bugs.openjdk.org/browse/JDK-8305104). These VM hacks can be removed together with the old implementation of `sun.reflect.ReflectionFactory::newConstructorForSerialization`. In addition, the special metaspace for reflection can also be removed. I will create a separate issue to remove `Metaspace::ReflectionMetaspaceType` and update existing GTests together. [1] [JDK-4486457](https://bugs.openjdk.org/browse/JDK-4486457) [2] [JDK-4474172](https://bugs.openjdk.org/browse/JDK-4474172) [3] [JDK-6790209](https://bugs.openjdk.org/browse/JDK-6790209) ------------- Commit messages: - 8327624: Remove VM implementation that bypass verification for core reflection Changes: https://git.openjdk.org/jdk/pull/21571/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21571&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8327624 Stats: 981 lines in 17 files changed: 0 ins; 973 del; 8 mod Patch: https://git.openjdk.org/jdk/pull/21571.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/21571/head:pull/21571 PR: https://git.openjdk.org/jdk/pull/21571
