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Tom Lane 80fb2c1f40 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.		16 years ago
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backend	Repair memory leakage while ANALYZE-ing complex index expressions.	16 years ago
bin	Implement an "S" option for psql's \dn command.	16 years ago
include	Use appendrel planning logic for top-level UNION ALL structures.	16 years ago
interfaces	Some cleanup in ecpg code:	16 years ago
makefiles	Remove cvs keywords from all files.	16 years ago
pl	Use only one hash entry for all instances of a pltcl trigger function.	16 years ago
port	Fix comparisons of pointers with zero to compare with NULL instead.	16 years ago
template	Remove cvs keywords from all files.	16 years ago
test	Prevent invoking I/O conversion casts via functional/attribute notation.	16 years ago
timezone	Fix comparisons of pointers with zero to compare with NULL instead.	16 years ago
tools	Fix msvc build for localized versions of Visual C++	16 years ago
tutorial	Remove cvs keywords from all files.	16 years ago
.gitignore	Convert cvsignore to gitignore, and add .gitignore for build targets.	16 years ago
DEVELOPERS	…
Makefile	Remove cvs keywords from all files.	16 years ago
Makefile.global.in	Remove cvs keywords from all files.	16 years ago
Makefile.shlib	Remove cvs keywords from all files.	16 years ago
bcc32.mak	Remove cvs keywords from all files.	16 years ago
nls-global.mk	Fix makefile logic to not break the build when xgettext is missing	16 years ago
win32.mak	Remove cvs keywords from all files.	16 years ago