Merge pull request #427 from rollup/gh-425

prevent stack overflow with mutual strong dependencies – fixes #425

src/Bundle.js

@@ -360,7 +360,6 @@ export default class Bundle {
 			});
 		}
 
-
 		return ordered;
 	}
 }

test/function/cycles-stack-overflow/_config.js

@@ -0,0 +1,3 @@
+module.exports = {
+	description: 'does not stack overflow on crazy cyclical dependencies'
+};

test/function/cycles-stack-overflow/b.js

@@ -0,0 +1,11 @@
+import { C } from './c.js';
+
+export function B () {};
+
+B.prototype = {
+	c: function () {
+		return function () {
+			new C();
+		};
+	}()
+};

test/function/cycles-stack-overflow/c.js

@@ -0,0 +1,13 @@
+import { D } from './d.js';
+
+export function C () {
+	this.x = 'x';
+}
+
+C.prototype = {
+	d: function () {
+		return function () {
+			new D();
+		};
+	}()
+};

test/function/cycles-stack-overflow/d.js

@@ -0,0 +1,12 @@
+import { B } from './b.js';
+import { C } from './c.js';
+
+export function D () {};
+
+D.prototype = {
+	c: function () {
+		return function () {
+			new C();
+		};
+	}()
+};

test/function/cycles-stack-overflow/main.js

@@ -0,0 +1,3 @@
+import { C } from './c.js';
+
+assert.equal( new C().x, 'x' );