src/third_party/v8/test/mjsunit/regress/regress-330046.js

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//
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// Flags: --use-osr --allow-natives-syntax --opt

var o1 = {a : 10};
var o2 = { };
o2.__proto__ = o1;
var o3 = { };
o3.__proto__ = o2;

function f(n, x, b) {
  var sum = x.a;
  for (var i = 0; i < n; i++) {
    sum = 1.0 / i;
  }
  return sum;
}
%PrepareFunctionForOptimization(f);

f(10, o3);
f(20, o3);
f(30, o3);
%OptimizeFunctionOnNextCall(f, "concurrent");
f(100000, o3);
// At this point OSR replaces already optimized code.
// Check that it evicts old code from cache.

// This causes all code for f to be lazily deopted.
o2.a = 5;
%PrepareFunctionForOptimization(f);

// If OSR did not evict the old code, it will be installed in f here.
%OptimizeFunctionOnNextCall(f);
f(10, o3);

// The old code is already deoptimized, but f still points to it.
// Disassembling it will crash.
%DisassembleFunction(f);