optimized-out-03.js

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// Test that eval-in-frame throws on accessing optimized out values.

// Use gczeal 0 to keep CGC from invalidating Ion code and causing test failures.

gczeal(0);

load(libdir + "jitopts.js");

if (!jitTogglesMatch(Opts_IonEagerNoOffthreadCompilation))

  quit(0);

withJitOptions(Opts_IonEagerNoOffthreadCompilation, function() {

  var dbgGlobal = newGlobal({newCompartment: true});

  var dbg = new dbgGlobal.Debugger();

  dbg.addDebuggee(this);

  var warmedUp = false;

  function check() {

    if (warmedUp) {

      var a = dbg.getNewestFrame().older.eval("a")

      assertEq(a.throw.unsafeDereference().toString(),

               "Error: variable 'a' has been optimized out");

  // Test optimized-out binding in function scope.

  function testFunctionScope() {

    var a = 1;

    for (var i = 0; i < 1; i++) { check(); }

  // Test optimized-out binding in block scope.

  function testBlockScope() {

      let a = 1;

      for (var i = 0; i < 1; i++) { check(); }

  with({}) {}

  testFunctionScope();

  testBlockScope();

  warmedUp = true;

  testFunctionScope();

  testBlockScope();

});