test/mjsunit/regress/regress-675.js

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// Regression test for http://code.google.com/p/v8/issues/detail?id=675.
//
// Test that load ICs for nonexistent properties check global
// property cells.

function f() { return this.x; }

// Initialize IC for nonexistent x property on global object.
f();
f();

// Assign to global property cell for x.
this.x = 23;

// Check that we bail out from the IC.
assertEquals(23, f());


// Same test, but test that the global property cell is also checked
// if the global object is the last object in the prototype chain for
// the load.
this.__proto__ = null;
function g() { return this.y; }

// Initialize IC.
g();
g();

// Update global property cell.
this.y = 42;

// Check that IC bails out.
assertEquals(42, g());