{"ast_node_type":"variable","tokens":[{"end":89,"kind":"keyword","start":0,"text":"if"}]}
        if let Some(old) = self.alloc_map.to_alloc.insert(id, GlobalAlloc::Memory(mem)) {
    pub fn set_alloc_id_memory(self, id: AllocId, mem: ConstAllocation<'tcx>) {
            bug!("tried to set allocation ID {id:?}, but it was already existing as {old:#?}");