That’s very nicely framed. Not too much at first, with room to grow if we like what we get at first.
On 30 Jan 2025, at 12:39, Dan Smith wrote: > I've created a small JEP as a follow-up to JEP 390 (Warnings for Value-Based > Classes, delivered in 16). > > https://bugs.openjdk.org/browse/JDK-8340476 > > JEP 390 introduced javac warnings about synchronization attempts on > value-based classes (including the wrapper classes), which will become errors > when synchronizing on a value object. This JEP produces similar warnings for > uses of identity-sensitive libraries with value-based classes, which will > throw exceptions when operating on value objects. > > (JEP 390 also had a HotSpot diagnostic for the 'monitorenter' instruction, > which we don't have an analog for here, because it didn't seem worthwhile, > and we don't really have a mechanism for library diagnostics.) > > This JEP doesn't depend on value classes or other big features, so I'm > envisioning getting it into the 25 release.
