Ensure an index that uses a whole-row Var still depends on its table.
We failed to record any dependency on the underlying table for an index
declared like "create index i on t (foo(t.*))". This would create trouble
if the table were dropped without previously dropping the index. To fix,
simplify some overly-cute code in index_create(), accepting the possibility
that sometimes the whole-table dependency will be redundant. Also document
this hazard in dependency.c. Per report from Kevin Grittner.
In passing, prevent a core dump in pg_get_indexdef() if the index's table
can't be found. I came across this while experimenting with Kevin's
example. Not sure it's a real issue when the catalogs aren't corrupt, but
might as well be cautious.
Back-patch to all supported versions.
Branch
------
REL9_0_STABLE
Details
-------
http://git.postgresql.org/gitweb?p=postgresql.git;a=commitdiff;h=e84bf651216a80c1d0c0d14901dea244c6a333ab
Modified Files
--------------
src/backend/catalog/dependency.c | 15 ++++++++++++++-
src/backend/catalog/index.c | 15 +++++----------
src/backend/utils/adt/ruleutils.c | 24 +++++++++++++++++++++---
3 files changed, 40 insertions(+), 14 deletions(-)
