test: expression.literal.unionInit; .init on unions and structs.

Author: bhelyer

rt/test/expression/literal/unionInit/test.volt

@@ -0,0 +1,20 @@
+module test;
+
+struct S
+{
+	x: i32;
+	union _u {
+		y: i32;
+		z: i64;
+	}
+	u: _u;
+}
+
+fn main() i32
+{
+	s: S;
+	s.x = 1;
+	s.u.y = 12;
+	s = S.init;
+	return cast(i32)(s.x + s.u.y + s.u.z);
+}