| From: | Pierre Ducroquet <p(dot)psql(at)pinaraf(dot)info> |
|---|---|
| To: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: function lca('{}'::ltree[]) caused DB Instance crash |
| Date: | 2018-07-13 10:48:35 |
| Message-ID: | 4285558.KOck4HGOto@peanuts2 |
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| Thread: | |
| Lists: | pgsql-bugs pgsql-hackers |
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
| Attachment | Content-Type | Size |
|---|---|---|
| 0001-Fix-segfault-with-lca-ltree.patch | text/x-patch | 661 bytes |
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