Log Message:
-----------
Make equalTupleDescs() compare attlen/attbyval/attalign rather than
assuming comparison of atttypid is sufficient. In a dropped column
atttypid will be 0, and we'd better check the physical-storage data
to make sure the tupdescs are physically compatible.
I do not believe there is a real risk before 8.0, since before that
we only used this routine to compare successive states of the tupdesc
for a particular relation. But 8.0's typcache.c might be comparing
arbitrary tupdescs so we'd better play it safer.
Tags:
----
REL8_0_STABLE
Modified Files:
--------------
pgsql/src/backend/access/common:
tupdesc.c (r1.108 -> r1.108.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/access/common/tupdesc.c.diff?r1=1.108&r2=1.108.4.1)
