<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">If I do <div class=""><br class=""></div><div class=""><div class="">(#foo -> #bar)</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>beReadOnlyObject;</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>value: #baz</div></div><div class=""><br class=""></div><div class="">it throws</div><div class=""><br class=""></div><div class=""><b class="">ModificationForbidden: #foo->#bar is read-only, hence its field 2 cannot be modified with #baz</b></div><div class=""><br class=""></div><div class=""> which is as expected. But if I do</div><div class=""><br class=""></div><div class=""><div class="">(#foo -> #bar)</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>beReadOnlyObject;</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>instVarNamed: #value put: #baz</div></div><div class=""><br class=""></div><div class="">I get</div><div class=""><br class=""></div><div class=""><b class="">PrimitiveFailed: primitive #instVarAt:put: in Association failed</b></div><div class=""><br class=""></div><div class="">I think this a bug, no?</div><div class=""><br class=""></div><div class="">Norbert</div></body></html>