(pekko-persistence-jdbc) 01/01: feat: Add -Yfuture-lazy-vals for Scala 3.3.x builds

[he...@apache.org]

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He-Pin pushed a commit to branch add-future-lazy-vals
in repository https://gitbox.apache.org/repos/asf/pekko-persistence-jdbc.git

commit a163c1cadd275054d70e07cadf87da8930d5b9ce
Author: 虎鸣 <he...@alibaba-inc.com>
AuthorDate: Sun Jun 14 18:25:49 2026 +0800

    feat: Add -Yfuture-lazy-vals for Scala 3.3.x builds
    
    Motivation:
    The Scala 3.3.8 compiler introduced the -Yfuture-lazy-vals flag to
    optionally use VarHandle instead of sun.misc.Unsafe for lazy val
    implementation. This prepares libraries for upcoming JDK releases
    that restrict sun.misc.Unsafe access.
    
    Modification:
    Add -Yfuture-lazy-vals to scalacOptions, conditionally applied only
    for Scala 3.3.x via CrossVersion.partialVersion or scalaBinaryVersion.
    
    Result:
    Scala 3.3.x build uses the future-proof VarHandle-based lazy val
    implementation, compatible with all JDK 9+ versions including future
    releases that restrict sun.misc.Unsafe.
    
    References:
    Refs scala/scala3-lts#637
    Refs apache/pekko#3059
---
 project/ProjectAutoPlugin.scala | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/project/ProjectAutoPlugin.scala b/project/ProjectAutoPlugin.scala
index f81cf5fb..dc530b9f 100644
--- a/project/ProjectAutoPlugin.scala
+++ b/project/ProjectAutoPlugin.scala
@@ -54,6 +54,8 @@ object ProjectAutoPlugin extends AutoPlugin {
       (CrossVersion.partialVersion(scalaVersion.value) match {
         case Some((2, _)) =>
           disciplineScalacOptions
+        case Some((3, _)) =>
+          Set("-Yfuture-lazy-vals")
         case _ =>
           Nil
       }).toSeq,


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