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<!DOCTYPE html>
<link rel="author" href="mailto:masonf@chromium.org">
<link rel="help" href="https://html.spec.whatwg.org/multipage/scripting.html#dom-slot-assign">
<link rel="help" href="https://crbug.com/1201402">
<div id="host">
<div id="child1"></div>
</div>
This test passes if it does not crash.
<script>
const host = document.querySelector("#host");
const child1 = document.querySelector("#child1");
const shadow_root = host.attachShadow({ mode: "open", slotAssignment: "manual" });
var slot1 = document.createElement("slot");
slot1.id = "first_slot";
shadow_root.appendChild(slot1);
slot1.assign(child1);
slot1.remove();
slot1 = document.createElement("slot");
slot1.id = "second_slot";
shadow_root.appendChild(slot1);
slot1.assign(child1); // Shouldn't crash here
</script>
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