michael@0: // Test that parent frames are shared when the older portions of two stacks are
michael@0: // the same.
michael@0: 
michael@0: let f1, f2;
michael@0: 
michael@0: function dos() {
michael@0:   f1 = saveStack();
michael@0:   f2 = saveStack();
michael@0: }
michael@0: 
michael@0: (function uno() {
michael@0:   dos();
michael@0: }());
michael@0: 
michael@0: 
michael@0: // Different youngest frames.
michael@0: assertEq(f1 == f2, false);
michael@0: // However the parents should be the same.
michael@0: assertEq(f1.parent, f2.parent);