var newContext = { id : 'new-context' }; // Should be invoced by call with substitute this by newContext function sink (p, q) { var g = x => { // Check if arrow function store context if (this != newContext || this.id != newContext.id) throw 'Wrong context of arrow function #1'; return x; }; if (p) { if (q) OSRExit(); return g; } return x => { // Check if arrow function store context if (this != newContext || this.id != newContext.id) throw 'Wrong context of arrow function #2'; return x; }; } noInline(sink); for (var i = 0; i < 10000; ++i) { var f = sink.call(newContext, true, false);// Substitute this var result = f(42); if (result != 42) throw "Error: expected 42 but got " + result; } // At this point, the function should be compiled down to the FTL // Check that the function is properly allocated on OSR exit var f = sink.call(newContext,true, true);// Substitute this var result = f(42); if (result != 42) throw "Error: expected 42 but got " + result;