On Thu, 28 Sep 2023 13:13:31 GMT, Maurizio Cimadamore <mcimadam...@openjdk.org> wrote:
> This patch adds a new lint warning category, namely `-Xlint:restricted` to > enable warnings on restricted method calls. > > The patch is relatively straightforward: javac marks methods that are marked > with the `@Restricted` annotation with a corresponding internal flag. This is > done both in `Annotate` when compiling JDK from source, and in `ClassReader` > when JDK classfiles are read. When calls to methods marked with the special > flag are found, a new warning is issued. > > While there are some similarities between this new warning and the preview > API warnings, the compiler does *not* emit a mandatory note when a > compilation unit is found to have one or more restricted method calls. In > other words, this is just a plain lint warning. > > The output from javac looks as follows: > > > Foo.java:6: warning: [restricted] MemorySegment.reinterpret(long) is a > restricted method. > Arena.ofAuto().allocate(10).reinterpret(100); > ^ > (Restricted methods are unsafe, and, if used incorrectly, they might crash > the JVM or result in memory corruption) This pull request has now been integrated. Changeset: 0d4de8a7 Author: Maurizio Cimadamore <mcimadam...@openjdk.org> URL: https://git.openjdk.org/jdk/commit/0d4de8a71f063e44618f43ddd862a91aed647f48 Stats: 119 lines in 15 files changed: 115 ins; 0 del; 4 mod 8316971: Add Lint warning for restricted method calls Reviewed-by: ihse, vromero ------------- PR: https://git.openjdk.org/jdk/pull/15964
