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/* -*- indent-tabs-mode: nil; js-indent-level: 4 -*- */
/*
* Any copyright is dedicated to the Public Domain.
* http://creativecommons.org/licenses/publicdomain/
*/
var v="global";
function f(a) {
// This eval could extend f's call object. However, the call object has
// not yet been marked as a delegate at this point, so no scope chain
// purge takes place when it is extended.
eval(a);
{
let b=3;
// This eval causes the cloned block object to be added to the
// scope chain. The block needs a unique shape: its parent call
// could acquire bindings for anything without affecting the global
// object's shape, so it's up to the block's shape to mismatch all
// property cache entries for prior blocks.
eval("");
return v;
};
}
// Call the function once, to cache a reference to the global v from within
// f's lexical block.
assertEq("global", f(""));
// Call the function again, adding a binding to the call, and ensure that
// we do not see any property cache entry created by the previous reference
// that would direct us to the global definition.
assertEq("local", f("var v='local'"));
// Similarly,but with a doubly-nested block; make sure everyone gets marked.
function f2(a) {
eval(a);
{
let b=3;
{
let c=4;
eval("");
return v;
};
};
}
assertEq("global", f2(""));
assertEq("local", f2("var v='local'"));
reportCompare(true, true);
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