About the Vec (v)->data[(v)->length++] = (val)

[a631069724]

#define vec_push(v, val)
( vec_expand(vec_unpack(v)),
(v)->data[(v)->length++] = (val) ) void dyad_addListener(

dyad_Stream *stream, int event, dyad_Callback callback, void *udata ) { Listener listener; listener.event = event; listener.callback = callback; listener.udata = udata; vec_push(&stream->listeners, listener); } the listener will be free how can (v)->data[(v)->length++] = (val) for c