2 files changed, 48 insertions, 1 deletions
diff --git a/src/dotty/tools/dotc/ast/TreeInfo.scala b/src/dotty/tools/dotc/ast/TreeInfo.scala
index 421ff5919..a6c49cffd 100644
--- a/src/dotty/tools/dotc/ast/TreeInfo.scala
+++ b/src/dotty/tools/dotc/ast/TreeInfo.scala
@@ -305,6 +305,8 @@ trait TypedTreeInfo extends TreeInfo[Type] { self: Trees.Instance[Type] =>
       if (vdef.symbol.flags is Mutable) Impure else exprPurity(vdef.rhs)
     case _ =>
       Impure
+      // TODO: It seem like this should be exprPurity(tree)
+      // But if we do that the repl/vars test break. Need to figure out why that's the case.
   }
 
   /** The purity level of this expression.
@@ -321,7 +323,8 @@ trait TypedTreeInfo extends TreeInfo[Type] { self: Trees.Instance[Type] =>
     case EmptyTree
        | This(_)
        | Super(_, _)
-       | Literal(_) =>
+       | Literal(_)
+       | Closure(_, _, _) =>
       Pure
     case Ident(_) =>
       refPurity(tree)
diff --git a/tests/run/inlineForeach.scala b/tests/run/inlineForeach.scala
new file mode 100644
index 000000000..0c6135c6d
--- /dev/null
+++ b/tests/run/inlineForeach.scala
@@ -0,0 +1,44 @@
+object Test {
+
+  class Range(from: Int, end: Int) {
+
+    inline
+    def foreach(inline op: Int => Unit): Unit = {
+      var i = from
+      while (i < end) {
+        op(i)
+        i += 1
+      }
+    }
+
+    def filter(p: Int => Boolean): List[Int] = ???
+  }
+
+  implicit class intWrapper(private val start: Int) extends AnyVal {
+    def until(end: Int) = new Range(start, end)
+    def to(limit: Int) = new Range(start, limit + 1)
+  }/*
+
+  def matmul(xs: Array[Array[Double]], ys: Array[Array[Double]]): Array[Array[Double]] = {
+    def nrows = xs.length
+    def ncols = ys(0).length
+    def n = ys.length
+    assert(xs(0).length == n)
+    val zs = Array.ofDim[Double](nrows, ncols)
+    for (i <- intWrapper(0) until nrows)
+      for (j <- 0 until ncols) {
+        var x = 0.0
+        for (k <- 0 until n)
+          x += xs(i)(k) * ys(k)(j)
+        zs(i)(j) = x
+      }
+    zs
+  }
+*/
+  def main(args: Array[String]) = {
+  /*  1.until(10).foreach(i => println(i))
+    1.until(10).foreach(println(_))*/
+    1.until(10).foreach(println)
+    for (i <- 1 to 10) println(i)
+  }
+}