Tom Lane 2ff82b6e67 Repair memory leakage while ANALYZE-ing complex index expressions. ... The general design of memory management in Postgres is that intermediate results computed by an expression are not freed until the end of the tuple cycle. For expression indexes, ANALYZE has to re-evaluate each expression for each of its sample rows, and it wasn't bothering to free intermediate results until the end of processing of that index. This could lead to very substantial leakage if the intermediate results were large, as in a recent example from Jakub Ouhrabka. Fix by doing ResetExprContext for each sample row. This necessitates adding a datumCopy step to ensure that the final expression value isn't recycled too. Some quick testing suggests that this change adds at worst about 10% to the time needed to analyze a table with an expression index; which is annoying, but seems a tolerable price to pay to avoid unexpected out-of-memory problems. Back-patch to all supported branches.		2010-11-09 11:47:29 -05:00
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backend	Repair memory leakage while ANALYZE-ing complex index expressions.	2010-11-09 11:47:29 -05:00
bin	Translation updates for 8.2.18	2010-09-30 22:19:17 +03:00
include	Tag 8.2.18	2010-10-01 10:37:09 -03:00
interfaces	Fix ecpg test building process to not generate *.dSYM junk on Macs.	2010-10-20 00:55:15 -04:00
makefiles	Add $(CFLAGS) to the simplified build rule for .so libraries on Darwin.	2006-11-28 05:45:43 +00:00
pl	Fix plpgsql's handling of "simple" expression evaluation.	2010-10-28 13:01:23 -04:00
port	Tag 8.2.18	2010-10-01 10:37:09 -03:00
template	Make --with-ldap build on Unixware, per Olivier Prenant.	2006-12-14 21:50:07 +00:00
test	Reduce recursion depth in recently-added regression test.	2010-11-03 13:42:19 -04:00
timezone	Convert cvsignore to gitignore, and add .gitignore for build targets.	2010-09-22 12:57:14 +02:00
tools	Fix MSVC builds for recent plperl changes. Go back to version 8.2, which is	2010-05-13 21:34:55 +00:00
tutorial	Fix some misuses of strncat().	2006-09-27 16:19:42 +00:00
.gitignore	Convert cvsignore to gitignore, and add .gitignore for build targets.	2010-09-22 12:57:14 +02:00
bcc32.mak	Fix bcc32.mak to create and remove pg_config_os.h properly. Apparently	2006-10-06 18:53:53 +00:00
DEVELOPERS	Testing commit stuff	2006-07-10 15:50:02 +00:00
Makefile	Remove dllinit.c; it was only needed for long-obsolete Cygwin versions,	2006-06-22 23:50:35 +00:00
Makefile.global.in	On Windows, we know the backend stack size limit because we have to	2006-10-08 17:15:34 +00:00
Makefile.shlib	Fix shared library creation to work properly on AIX. Albe Laurenz	2006-09-19 15:36:08 +00:00
nls-global.mk	When merging PO files, take into consideration translations in other PO	2006-04-05 13:40:15 +00:00
win32.mak	Fix win32.mak for config cleanup.	2006-08-08 22:44:05 +00:00