Fix #1569: Fix logic for by-name parameters of inline methods

As #1569 shows, by-name parameters should be treated in the same way
as by-value parameters. If the expression is not pure, install a binding.

1 files changed, 5 insertions, 0 deletions

diff --git a/tests/run/i1569.scala b/tests/run/i1569.scala
new file mode 100644
index 000000000..2c5dd4e5a
--- /dev/null
+++ b/tests/run/i1569.scala
@@ -0,0 +1,5 @@
+object Test {
+  inline def foo(inline n: => Int) = n + n
+
+  def main(args: Array[String]): Unit = foo({ println("foo"); 42 })
+}