False positive with strict-unsealed-patmat and Java enum (2.11)
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durban commented
If I have a Java enum like this:
package com.example;
public enum MyEnum {
FOO,
BAR,
BAZ,
}
And I match on it from Scala like this:
package com.example
object Foo {
def foo(e: MyEnum): Int = e match {
case MyEnum.FOO => 1
case MyEnum.BAR => 2
case MyEnum.BAZ => 3
}
}
I get a warning:
[warn] .../Foo.scala:5: match may not be exhaustive.
[warn] It would fail on the following input: (x: com.example.MyEnum forSome x not in (BAR, BAZ, FOO))
[warn] def foo(e: MyEnum): Int = e match {
[warn] ^
Build options:
scalaVersion := "2.11.11-bin-typelevel-4"
scalaOrganization := "org.typelevel"
scalacOptions += "-Xlint:strict-unsealed-patmat"
Note, that I cannot reproduce the issue with version 2.12.2-bin-typelevel-4
.