1 files changed, 15 insertions, 0 deletions
diff --git a/test/files/pos/t3278.scala b/test/files/pos/t3278.scala
new file mode 100644
index 0000000000..788ec75d26
--- /dev/null
+++ b/test/files/pos/t3278.scala
@@ -0,0 +1,15 @@
+class Foo
+class Test {
+	def update[B](x : B, b : Int) {}
+	def apply[B](x : B) = 1
+}
+
+object Test {
+	def main(a : Array[String]) {
+		val a = new Test
+		val f = new Foo
+		a(f) = 1 //works
+		a(f) = a(f) + 1 //works
+		a(f) += 1 //error: reassignment to val
+	}
+}
+\ No newline at end of file