Re: BUG #17877: Referencing a system column in a foreign key leads to incorrect memory access

[Ranier Vilela]

Hi,

I think that commit f0d65c0
<https://github.com/postgres/postgres/commit/f0d65c0eaf05d6acd3ae05cde4a31465eb3992b2>
has an oversight.

Attnum == 0, is system column too, right?

All other places at tablecmds.c, has this test:

if (attnum <= 0)
    ereport(ERROR,

regards,
Ranier Vilela

reject_system_column_equal_zero.patch
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