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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
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Add m-esr52 at 52.6.0
Diffstat (limited to 'js/src/jit-test/tests/basic/testBug501690.js')
-rw-r--r--js/src/jit-test/tests/basic/testBug501690.js14
1 files changed, 14 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/testBug501690.js b/js/src/jit-test/tests/basic/testBug501690.js
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+++ b/js/src/jit-test/tests/basic/testBug501690.js
@@ -0,0 +1,14 @@
+function testBug501690() {
+ // Property cache assertion when 3 objects along a prototype chain have the same shape.
+ function B(){}
+ B.prototype = {x: 123};
+
+ function D(){}
+ D.prototype = new B;
+ D.prototype.x = 1; // [1] shapeOf(B.prototype) == shapeOf(D.prototype)
+
+ arr = [new D, new D, new D, D.prototype]; // [2] all the same shape
+ for (var i = 0; i < 4; i++)
+ assertEq(arr[i].x, 1); // same kshape [2], same vshape [1]
+}
+testBug501690();