Bruce Momjian [Fri, 23 Sep 2005 21:02:37 +0000 (21:02 +0000)]
Backpatch to 8.0.X:
In several places PL/Python was calling PyObject_Str() and then
PyString_AsString() without checking if the former had returned
NULL to indicate an error. PyString_AsString() doesn't expect a
NULL argument, so passing one causes a segmentation fault. This
patch adds checks for NULL and raises errors via PLy_elog(), which
prints details of the underlying Python exception. The patch also
adds regression tests for these checks. All tests pass on my
Solaris 9 box running HEAD and Python 2.4.1.
Update Snowball. I have to update it because of
old version doesn't available on Snowball's site and new version
of stemmers can't be compiled with old interface.
Tom Lane [Mon, 12 Sep 2005 22:20:30 +0000 (22:20 +0000)]
Ensure that any memory leaked during an error inside the bgwriter is
recovered. I did not see any actual leak while testing this in CVS tip,
but 8.0 definitely has a problem with leaking the space temporarily
palloc'd by BufferSync(). In any case this seems a good idea to forestall
similar problems in future. Per report from Arjen van der Meijden.
Tom Lane [Sun, 11 Sep 2005 00:36:35 +0000 (00:36 +0000)]
Avoid changing stdin/stdout to binary mode on Windows unless that is
really the source or destination of the archive. I think this will
resolve recent complaints that password prompting is broken in pg_restore
on Windows. Note that password prompting and reading from stdin is an
unworkable combination on Windows ... but that was true anyway.
Tom Lane [Wed, 7 Sep 2005 21:39:41 +0000 (21:39 +0000)]
Update timezone data files to release 2005m of the zic database.
Among other changes, this reflects the recently passed change in USA
daylight savings rules.
Tom Lane [Sat, 27 Aug 2005 16:22:58 +0000 (16:22 +0000)]
Get the MIPS assembler syntax right. Also add a separate sync command;
the reference I consulted yesterday said SC does a SYNC, but apparently
this is not true on newer MIPS processors, so be safe.
Tom Lane [Thu, 25 Aug 2005 19:45:06 +0000 (19:45 +0000)]
Back-patch fixes for problems with VACUUM destroying t_ctid chains too soon,
and with insufficient paranoia in code that follows t_ctid links.
This patch covers the 8.0 branch.
Michael Meskes [Wed, 24 Aug 2005 10:35:12 +0000 (10:35 +0000)]
- Check for NULL before checking whether argument is an array.
- Removed stray character from string quoting.
- Fixed check to report missing varchar pointer implementation.
Tom Lane [Sat, 20 Aug 2005 19:19:31 +0000 (19:19 +0000)]
Invoke mksafefunc and mkunsafefunc with :: decoration. This seems a good
idea on consistency grounds, whether or not it really fixes bug #1831.
Michael Fuhr
Tom Lane [Tue, 16 Aug 2005 00:48:29 +0000 (00:48 +0000)]
Reject operator names >= NAMEDATALEN characters. These will not work
anyway, and in assert-enabled builds you are likely to get an assertion
failure. Backpatch as far as 7.3; 7.2 seems not to have the problem.
Tom Lane [Mon, 15 Aug 2005 19:40:43 +0000 (19:40 +0000)]
array_in() and array_recv() need to be more paranoid about validating
their OID parameter. It was possible to crash the backend with
select array_in('{123}',0,0); because that would bypass the needed step
of initializing the workspace. These seem to be the only two places
with a problem, though (record_in and record_recv don't have the issue,
and the other array functions aren't depending on user-supplied input).
Back-patch as far as 7.4; 7.3 does not have the bug.
Tom Lane [Mon, 15 Aug 2005 19:05:30 +0000 (19:05 +0000)]
int_array_enum function should be using fcinfo->flinfo->fn_extra for
working state, not fcinfo->context. Silly oversight on my part in last
go-round of fixes.
Bruce Momjian [Fri, 12 Aug 2005 21:38:00 +0000 (21:38 +0000)]
This patch fixes the event type used to log output from the
stderr-in-service or output-from-syslogger-in-service code. Previously
everything was flagged as ERRORs there, which caused all instances to
log "LOG: logger shutting down" as error...
Please apply for 8.1. I'd also like it considered for 8.0 since logging
non-errors as errors can be cause for alarm amongst people who actually
look at their logs...
Bruce Momjian [Fri, 12 Aug 2005 21:23:18 +0000 (21:23 +0000)]
[ backpatched to 8.0.X.]
> >> 3) I restarted the postmaster both times. I got this error
> both times.
> >> :25: ERROR: could not load library "C:/Program
> >> Files/PostgreSQL/8.0/lib/testtrigfuncs.dll": dynamic load error
>
> > Yes. We really need to look at fixing that error message. I had
> > forgotten it completely :-(
>
> > Bruce, you think we can sneak that in after feature freeze? I would
> > call it a bugfix :-)
>
> Me too. That's been on the radar for awhile --- please do
> send in a patch.
Here we go, that wasn't too hard :-)
Apart from adding the error handling, it does one more thing: it changes
the errormode when loading the DLLs. Previously if a DLL was broken, or
referenced other DLLs that couldn't be found, a popup dialog box would
appear on the screen. Which had to be clicked before the backend could
continue. This patch also disables the popup error message for DLL
loads.
I think this is something we should consider doing for the entire
backend - disable those popups, and say we deal with it ourselves. What
do you other win32 hackers thinnk about this?
In the meantime, this patch fixes the error msgs. Please apply for 8.1
and please consider a backpatch to 8.0.
Tom Lane [Mon, 8 Aug 2005 23:39:14 +0000 (23:39 +0000)]
Fix crash when reading 'timezone = unknown' from postgresql.conf during
SIGHUP; it's not OK for an assign_hook to return a non-malloc'd string.
Problem was introduced during timezone library rewrite.
Tom Lane [Sun, 7 Aug 2005 18:47:38 +0000 (18:47 +0000)]
Fix count_usable_fds() to stop trying to open files once it reaches
max_files_per_process. Going further than that is just a waste of
cycles, and it seems that current Cygwin does not cope gracefully
with deliberately running the system out of FDs. Per Andrew Dunstan.
Tom Lane [Fri, 22 Jul 2005 19:12:33 +0000 (19:12 +0000)]
Fix compare_fuzzy_path_costs() to behave a bit more sanely. The original
coding would ignore startup cost differences of less than 1% of the
estimated total cost; which was OK for normal planning but highly not OK
if a very small LIMIT was applied afterwards, so that startup cost becomes
the name of the game. Instead, compare startup and total costs fuzzily
but independently. This changes the plan selected for two queries in the
regression tests; adjust expected-output files for resulting changes in
row order. Per reports from Dawid Kuroczko and Sam Mason.
Tom Lane [Mon, 18 Jul 2005 21:37:23 +0000 (21:37 +0000)]
It appears that Darwin (OS X) does not cope well with C functions that
have the same name as the containing shared library --- as best I can
tell, the compiler internally creates a function of that name, and does
not warn you about the conflict. Fix buildfarm failure in back branches
by renaming tsearch() trigger function at the C level.
Tom Lane [Mon, 18 Jul 2005 15:53:46 +0000 (15:53 +0000)]
MemSet() must not cast its pointer argument to int32* until after it has
checked that the pointer is actually word-aligned. Casting a non-aligned
pointer to int32* is technically illegal per the C spec, and some recent
versions of gcc actually generate bad code for the memset() when given
such a pointer. Per report from Andrew Morrow.
Tom Lane [Sun, 17 Jul 2005 18:29:13 +0000 (18:29 +0000)]
Make pg_regress accept a command-line option for the temporary installation's
port number, and use a default value for it that is dependent on the
configuration-time DEF_PGPORT. Should make the world safe for running
parallel 'make check' in different branches. Back-patch as far as 7.4
so that this actually is useful.
Tom Lane [Sun, 17 Jul 2005 04:05:49 +0000 (04:05 +0000)]
Back-patch recent changes to alter the order of -L flags inserted from
LDFLAGS versus those built into the Makefiles. This looks like it will
fix several buildfarm failures in the back branches.
Tom Lane [Fri, 15 Jul 2005 18:40:20 +0000 (18:40 +0000)]
Check for out-of-range varoattno in deparse_context_for_subplan.
I have seen this case in CVS tip due to new "physical tlist" optimization
for subqueries. I believe it probably can't happen in existing releases,
but the check is not going to hurt anything, so backpatch to 8.0 just
in case.
Tom Lane [Fri, 15 Jul 2005 17:09:50 +0000 (17:09 +0000)]
Fix overenthusiastic optimization of 'x IN (SELECT DISTINCT ...)' and related
cases: we can't just consider whether the subquery's output is unique on its
own terms, we have to check whether the set of output columns we are going to
use will be unique. Per complaint from Luca Pireddu and test case from
Michael Fuhr.
Tom Lane [Mon, 27 Jun 2005 02:18:14 +0000 (02:18 +0000)]
Modify pg_dump to assume that a check constraint is inherited if its
name matches the name of any parent-table constraint, without looking
at the constraint text. This is a not-very-bulletproof workaround for
the problem exhibited by Berend Tober last month. We really ought to
record constraint inheritance status in pg_constraint, but it's looking
like that may not get done for 8.1 --- and even if it does, we will
need this kluge for dumping from older servers.
Tom Lane [Sat, 25 Jun 2005 22:47:49 +0000 (22:47 +0000)]
Force a checkpoint before committing a CREATE DATABASE command. This
should fix the recent reports of "index is not a btree" failures,
as well as preventing a more obscure race condition involving changes
to a template database just after copying it with CREATE DATABASE.
Tom Lane [Sat, 25 Jun 2005 16:54:00 +0000 (16:54 +0000)]
Fix ancient memory leak in index_create(): RelationInitIndexAccessInfo
was being called twice in normal operation, leading to a leak of one set
of relcache subsidiary info. Per report from Jeff Gold.
Neil Conway [Wed, 22 Jun 2005 02:02:09 +0000 (02:02 +0000)]
Correct some code in pg_restore when reading the header of a tar archive:
(1) The code doesn't initialize `sum', so the initial "does the checksum
match?" test is wrong.
(2) The loop that is intended to check for a "null block" just checks
the first byte of the tar block 512 times, rather than each of the
512 bytes one time (!), which I'm guessing was the intent.
It was only through sheer luck that this worked in the first place.
Per Coverity static analysis performed by EnterpriseDB.
Neil Conway [Tue, 21 Jun 2005 01:23:25 +0000 (01:23 +0000)]
Fix a potential backend crash during authentication when parsing a
malformed ident map file. This was introduced by the linked list
rewrite in 8.0 -- mea maxima culpa.
Per Coverity static analysis performed by EnterpriseDB.
Tom Lane [Mon, 20 Jun 2005 22:51:49 +0000 (22:51 +0000)]
exec_eval_datum leaks memory when dealing with ROW or REC values.
It never leaked memory before PG 8.0, so none of the callers are
expecting this. Cleanest fix seems to be to make it allocate the needed
memory in estate->eval_econtext, where it will be cleaned up by
the next exec_eval_cleanup. Per report from Bill Rugolsky.
Tom Lane [Mon, 20 Jun 2005 20:44:50 +0000 (20:44 +0000)]
plpgsql's exec_assign_value() freed the old value of a variable before
copying/converting the new value, which meant that it failed badly on
"var := var" if var is of pass-by-reference type. Fix this and a similar
hazard in exec_move_row(); not sure that the latter can manifest before
8.0, but patch it all the way back anyway. Per report from Dave Chapeskie.
Tom Lane [Sat, 18 Jun 2005 20:51:44 +0000 (20:51 +0000)]
When using C-string lookup keys in a dynahash.c hash table, use strncpy()
not memcpy() to copy the offered key into the hash table during HASH_ENTER.
This avoids possible core dump if the passed key is located very near the
end of memory. Per report from Stefan Kaltenbrunner.
Tom Lane [Tue, 14 Jun 2005 14:21:23 +0000 (14:21 +0000)]
The random selection in function linear() could deliver a value equal to max
if geqo_rand() returns exactly 1.0, resulting in failure due to indexing
off the end of the pool array. Also, since this is using inexact float math,
it seems wise to guard against roundoff error producing values slightly
outside the expected range. Per report from bug@zedware.org.
Tom Lane [Thu, 2 Jun 2005 21:03:46 +0000 (21:03 +0000)]
Push enable/disable of notify and catchup interrupts all the way down
to just around the bare recv() call that gets a command from the client.
The former placement in PostgresMain was unsafe because the intermediate
processing layers (especially SSL) use facilities such as malloc that are
not necessarily re-entrant. Per report from counterstorm.com.
Tom Lane [Wed, 1 Jun 2005 17:05:25 +0000 (17:05 +0000)]
patternsel() was improperly stripping RelabelType from the derived
expressions it constructed, causing scalarineqsel to become confused
if the underlying variable was of a domain type. Per report from
Kevin Grittner.
Tom Lane [Tue, 31 May 2005 19:10:39 +0000 (19:10 +0000)]
Add test to WAL replay to verify that xl_prev points back to the previous
WAL record; this is necessary to be sure we recognize stale WAL records
when a WAL page was only partially written during a system crash.
Tom Lane [Sun, 29 May 2005 17:10:35 +0000 (17:10 +0000)]
expandRTE and get_rte_attribute_type mistakenly always imputed typmod -1
to columns of an RTE that was a function returning RECORD with a column
definition list. Apparently no one has tried to use non-default typmod
with a function returning RECORD before.
Neil Conway [Thu, 26 May 2005 02:10:03 +0000 (02:10 +0000)]
Adjust datetime parsing to be more robust. We now pass the length of the
working buffer into ParseDateTime() and reject too-long input there,
rather than checking the length of the input string before calling
ParseDateTime(). The old method was bogus because ParseDateTime() can use
a variable amount of working space, depending on the content of the
input string (e.g. how many fields need to be NUL terminated). This fixes
a minor stack overrun -- I don't _think_ it's exploitable, although I
won't claim to be an expert.
Along the way, fix a bug reported by Mark Dilger: the working buffer
allocated by interval_in() was too short, which resulted in rejecting
some perfectly valid interval input values. I added a regression test for
this fix.
Tatsuo Ishii [Tue, 24 May 2005 23:02:54 +0000 (23:02 +0000)]
Inserting 5 characters into char(10) does not produce 5 padding spaces
if they are two-byte multibyte characters. Same thing can be happen
if octet_length(multibyte_chars) == n where n is char(n).
Long standing bug since 7.3 days. Per report and fix from Yoshiyuki Asaba.
Tom Lane [Tue, 24 May 2005 18:02:55 +0000 (18:02 +0000)]
Previous fix for "x FULL JOIN y ON true" failed to handle the case
where there was also a WHERE-clause restriction that applied to the
join. The check on restrictlist == NIL is really unnecessary anyway,
because select_mergejoin_clauses already checked for and complained
about any unmergejoinable join clauses. So just take it out.
Tom Lane [Fri, 13 May 2005 16:31:50 +0000 (16:31 +0000)]
Update createuser examples to match the current program behavior,
and add an example showing assignment of a password. Per suggestion
from Jari Aalto (via Martin Pitt).