I wrote:
> However, I don't understand why this code is returning NULL, rather than
> a zero-length ltree, in the case that there's no common prefix. That
> doesn't seem consistent to me.
After looking more closely, I see that what lca() returns is the longest
common *ancestor* of the input
Pierre Ducroquet writes:
> On Friday, July 13, 2018 12:09:20 PM CEST 李海龙 wrote:
>> contrib_regression=# select lca('{}'::ltree[]);
>> server closed the connection unexpectedly
> There is indeed a bug. The _lca function in _ltree_op.c tries to allocate 0
> bytes of memory, doesn't initialize it
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
HI,Oleg && pgsql-hackers
Plese help me to check this is a bug of ltree?
thxs!
lhl@localhost:~$ cat /etc/issue
Ubuntu 14.04.5 LTS \n \l
lhl@localhost:~$ uname -av
Linux localhost 3.13.0-107-generic #154-Ubuntu SMP Tue Dec 20 09:57:27 UTC 2016
x86_64 x86_64 x86_64 GNU/Linux
