mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-08-22 16:43:22 +02:00
10db3de66e
This oversight could result in a tuplestore using much more than the intended amount of memory. It would only happen in a code path that loaded a tuplestore via tuplestore_putvalues(), and many of those won't emit huge amounts of data; but cases such as holdable cursors and plpgsql's RETURN NEXT command could have the problem. The fix ensures that the tuplestore will switch to write-to-disk mode when it overruns work_mem. The potential overrun was finite, because we would still count the space used by the tuple pointer array, so the tuplestore code would eventually flip into write-to-disk mode anyway. When storing wide tuples we would go far past the expected work_mem usage before that happened; but this may account for the lack of prior reports. Back-patch to 8.4, where tuplestore_putvalues was introduced. Per bug #6061 from Yann Delorme. |
||
---|---|---|
.. | ||
access | ||
bootstrap | ||
catalog | ||
commands | ||
executor | ||
foreign | ||
lib | ||
libpq | ||
main | ||
nodes | ||
optimizer | ||
parser | ||
po | ||
port | ||
postmaster | ||
regex | ||
replication | ||
rewrite | ||
snowball | ||
storage | ||
tcop | ||
tsearch | ||
utils | ||
.gitignore | ||
common.mk | ||
Makefile | ||
nls.mk |