v8/test/mjsunit/limit-locals.js

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// Test that there is a limit of 131071 locals.

// Flags: --stack-size=1200

function function_with_n_locals(n) {
  test_prefix = "prefix ";
  test_suffix = " suffix";
  var src = "test_prefix + (function () {"
  for (var i = 1; i <= n; i++) {
    src += "var x" + i + ";";
  }
  src += "return " + n + ";})() + test_suffix";
  return eval(src);
}

assertEquals("prefix 0 suffix", function_with_n_locals(0));
assertEquals("prefix 16000 suffix", function_with_n_locals(16000));
assertEquals("prefix 131071 suffix", function_with_n_locals(131071));

assertThrows("function_with_n_locals(131072)");