1 files changed, 20 insertions, 0 deletions
diff --git a/tests/run/t6467.scala b/tests/run/t6467.scala
new file mode 100644
index 000000000..e02fb1669
--- /dev/null
+++ b/tests/run/t6467.scala
@@ -0,0 +1,20 @@
+
+
+
+
+import collection._
+
+
+
+object Test extends dotty.runtime.LegacyApp {
+
+  def compare(s1: String, s2: String): Unit = {
+    assert(s1 == s2, s1 + "\nvs.\n" + s2)
+  }
+
+  compare(List(1, 2, 3, 4).aggregate(new java.lang.StringBuffer)(_ append _, _ append _).toString, "1234")
+  compare(List(1, 2, 3, 4).par.aggregate(new java.lang.StringBuffer)(_ append _, _ append _).toString, "1234")
+  compare(Seq(0 until 100: _*).aggregate(new java.lang.StringBuffer)(_ append _, _ append _).toString, (0 until 100).mkString)
+  compare(Seq(0 until 100: _*).par.aggregate(new java.lang.StringBuffer)(_ append _, _ append _).toString, (0 until 100).mkString)
+
+}