End of Life Ruby 3.1 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

Thread#abort_on_exception=

thr.abort_on_exception= boolean → true or false

static VALUE
rb_thread_abort_exc_set(VALUE thread, VALUE val)
{
    rb_thread_ptr(thread)->abort_on_exception = RTEST(val);
    return val;
}

When set to true, if this thr is aborted by an exception, the raised exception will be re-raised in the main thread.