Fix subtly-wrong volatility checking in BeginCopyFrom().
contain_volatile_functions() is best applied to the output of
expression_planner(), not its input, so that insertion of function
default arguments and constant-folding have been done. (See comments
at CheckMutability, for instance.) It's perhaps unlikely that anyone
will notice a difference in practice, but still we should do it properly.
In passing, change variable type from Node* to Expr* to reduce the net
number of casts needed.
Noted while perusing uses of contain_volatile_functions().
Branch
------
REL9_3_STABLE
Details
-------
http://git.postgresql.org/pg/commitdiff/3c24b08f9bdc191d9e389dbcd97dbfb4cdb546d4
Modified Files
--------------
src/backend/commands/copy.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)