LazyVals: fix long shifts.

Author: DarkDimius

src/dotty/runtime/LazyVals.scala

@@ -8,8 +8,8 @@ import scala.annotation.tailrec
 object LazyVals {
   private val unsafe = scala.concurrent.util.Unsafe.instance
 
-  final val BITS_PER_LAZY_VAL = 2
-  final val LAZY_VAL_MASK = 3
+  final val BITS_PER_LAZY_VAL = 2L
+  final val LAZY_VAL_MASK = 3L
 
   @inline def STATE(cur: Long, ord: Int) = (cur >> (ord * BITS_PER_LAZY_VAL)) & LAZY_VAL_MASK
   @inline def CAS(t: Object, offset: Long, e: Long, v: Int, ord: Int) = {

src/dotty/tools/dotc/transform/LazyVals.scala

@@ -341,7 +341,7 @@ class LazyVals extends MiniPhaseTransform with IdentityDenotTransformer {
         // compute or create appropriate offsetSymol, bitmap and bits used by current ValDef
         appendOffsetDefs.get(companion.moduleClass) match {
           case Some(info) =>
-            val flagsPerLong = 64 / dotty.runtime.LazyVals.BITS_PER_LAZY_VAL
+            val flagsPerLong = (64 / dotty.runtime.LazyVals.BITS_PER_LAZY_VAL).toInt
             info.ord += 1
             ord = info.ord % flagsPerLong
             val id = info.ord / flagsPerLong