From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
---|---|
To: | pgsql-committers(at)postgresql(dot)org |
Subject: | pgsql: Fix bogus variable-mangling in security_barrier_replace_vars(). |
Date: | 2014-09-24 19:59:44 |
Message-ID: | E1XWsj2-0006Jg-TZ@gemulon.postgresql.org |
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Thread: | |
Lists: | pgsql-committers |
Fix bogus variable-mangling in security_barrier_replace_vars().
This function created new Vars with varno different from varnoold, which
is a condition that should never prevail before setrefs.c does the final
variable-renumbering pass. The created Vars could not be seen as equal()
to normal Vars, which among other things broke equivalence-class processing
for them. The consequences of this were indeed visible in the regression
tests, in the form of failure to propagate constants as one would expect.
I stumbled across it while poking at bug #11457 --- after intentionally
disabling join equivalence processing, the security-barrier regression
tests started falling over with fun errors like "could not find pathkey
item to sort", because of failure to match the corrupted Vars to normal
ones.
Branch
------
master
Details
-------
http://git.postgresql.org/pg/commitdiff/3f6f9260e308a331e6809d5309b17d1613ff900f
Modified Files
--------------
src/backend/optimizer/prep/prepsecurity.c | 2 +-
src/test/regress/expected/updatable_views.out | 32 ++++++++++++-------------
2 files changed, 17 insertions(+), 17 deletions(-)
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