Wrote test for getelementptr'ing into chained typedefs

generator/type_test.go

@@ -113,3 +113,26 @@ C: B
 }
 `)
 }
+
+func TestChainedTypedefGetElementPtr (test *testing.T) {
+testString (test,
+`%A = type { i64 }
+%B = type %A
+define void @main() {
+0:
+	%1 = alloca %B
+	%2 = load %B, ptr %1
+	%3 = getelementptr { i64 }, ptr %1, i32 0, i32 0
+	store i64 5, ptr %3
+	ret void
+}
+`,
+`
+A: (x:Int)
+B: A
+[main] = {
+	b:B
+	b.x = 5
+}
+`)
+}