Re: function lca('{}'::ltree[]) caused DB Instance crash

On Friday, July 13, 2018 12:09:20 PM CEST 李海龙 wrote:
> HI,Oleg && pgsql-hackers
>
> Plese help me to check this is a bug of ltree?
>

Hi

There is indeed a bug. The _lca function in _ltree_op.c tries to allocate 0
bytes of memory, doesn't initialize it and dereference it in lca_inner.
The attached basic patch fixes it.

Regards

 Pierre