NO_INLINE JsVar *jspeFactorDelete() {
  JSP_ASSERT_MATCH(LEX_R_DELETE);
  JsVar *parent = 0;
  JsVar *a = jspeFactorMember(jspeFactor(), &parent);
  JsVar *result = 0;
  if (JSP_SHOULD_EXECUTE) {
    bool ok = false;
    if (jsvIsName(a) && !jsvIsNewChild(a)) {
      // if no parent, check in root?
      if (!parent && jsvIsChild(execInfo.root, a))
        parent = jsvLockAgain(execInfo.root);

#ifdef DEBUG
      if (jsvHasChildren(parent)) assert(jsvIsChild(parent, a));
#endif
      if (jsvHasChildren(parent) && jsvIsChild(parent, a)) {
        // else remove properly.
        /* we use jsvIsChild here just in case. delete probably isn't called
        that often so it pays to be safe */
        if (jsvIsArray(parent)) {
          // For arrays, we must make sure we don't change the length
          JsVarInt l = jsvGetArrayLength(parent);
          jsvRemoveChild(parent, a);
          jsvSetArrayLength(parent, l, false);
        } else {
          jsvRemoveChild(parent, a);
        }
        ok = true;
      }
    }

    result = jsvNewFromBool(ok);
  }
  jsvUnLock2(a, parent);
  return result;
}
The software writes data past the end, or before the beginning, of the intended buffer.