Where's my side order of effect

[scabug]

Seems to lose a side effect.

$ scala
Welcome to Scala 2.12.1 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_111).
Type in expressions for evaluation. Or try :help.

scala>  object A { val u: Unit = { println("ok"); () } }
defined object A

scala> A.u

scala> A
ok
res1: A.type = A$@5b35c7d

[scabug]

Imported From: https://issues.scala-lang.org/browse/SI-10209?orig=1
Reporter: @som-snytt
Affected Versions: 2.12.1

[scabug]

@lrytz said (edited on Mar 1, 2017 11:05:44 AM UTC):
The getter call is replaced by BoxedUnit.UNIT because isExprSafeToInline. I'm not sure if that's intentional, the doc comment says

"References to modules [] are side-effecting [] but they are safe to inline because the expression result from evaluating them is always the same"

Related to scala/scala-dev#112

[som-snytt]

Duplicates #8666 which was closed in favor of umbrella ticket #5304

By "umbrella ticket" is meant "mass grave for tickets." Or is it more like how a squirrel tries to remember where the nuts are buried? Years later, it results in many more oak trees, where by "more oak trees" is meant "more tickets."