test/mjsunit/regress/regress-1156.js

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// Flags: --allow-natives-syntax --nouse-inlining

// Test that we do not crash we invoke builtins from optimized code that
// is then deoptimized.

function foo(a) {
  delete a[1];
  delete a[2];
  delete a[3];
  delete a[4];
  delete a[5];
  return void 0;
}

function call_and_deopt() {
  var b = [1,2,3];
  foo(b);
  foo(b);
  %DeoptimizeFunction(foo);
}

call_and_deopt();