repeat() checked for integer overflow during its calculation of the
required output space, but it just passed the resulting integer to
palloc(). This meant that result sizes between 1GB and 2GB led to
ERRCODE_INTERNAL_ERROR, "invalid memory alloc request size" rather
than ERRCODE_PROGRAM_LIMIT_EXCEEDED, "requested length too large".
That seems like a bit of a wart, so add an explicit AllocSizeIsValid
check to make these error cases uniform.
Do likewise in the sibling functions lpad() etc. While we're here,
also modernize their overflow checks to use pg_mul_s32_overflow() etc
instead of expensive divisions.
Per complaint from Japin Li. This is basically cosmetic, so I don't
feel a need to back-patch.
Discussion: https://postgr.es/m/ME3P282MB16676ED32167189CB0462173B6D69@ME3P282MB1667.AUSP282.PROD.OUTLOOK.COM
Mistake in 5891c7a8ed, likely made when switching the default value from none
to fetch during development.
Reported-By: Nathan Bossart <nathandbossart@gmail.com>
Author: Nathan Bossart <nathandbossart@gmail.com>
Discussion: https://postgr.es/m/20220524220147.GA1298892@nathanxps13
"\r" (for progress output) must not be inside a translatable string
(gettext gets upset).
In passing, move the minimum supported version number to a separate
argument, so that we don't have to retranslate this string every year
now.
The changes to show all query results (7844c9918) broke \timing output
in case of an error; it didn't update the timing result and showed
0.000 ms.
Fix by updating the timing result also in the error case. Also, for
robustness, update the timing result any time a result is obtained,
not only for the last, so a sensible value is always available.
Reported-by: Tom Lane <tgl@sss.pgh.pa.us>
Author: Richard Guo <guofenglinux@gmail.com>
Author: Fabien COELHO <coelho@cri.ensmp.fr>
Discussion: https://www.postgresql.org/message-id/3813350.1652111765%40sss.pgh.pa.us
On slow machines the modified test could end up switching the order in which
transactional stats are reported in one session and non-transactional stats in
another session. As stats handling of truncate is implemented as setting
live/dead rows 0, the order in which a truncate's stats changes are applied,
relative to normal stats updates, matters. The handling of stats for truncate
hasn't changed due to shared memory stats, this is longstanding behavior.
We might want to improve truncate's stats handling in the future, but for now
just change the order of forced flushed to make the test stable.
Reported-By: Christoph Berg <myon@debian.org>
Discussion: https://postgr.es/m/YoZf7U/WmfmFYFEx@msg.df7cb.de
ruleutils.c was coded to suppress the AS label for a SELECT output
expression if the column name is "?column?", which is the parser's
fallback if it can't think of something better. This is fine, and
avoids ugly clutter, so long as (1) nothing further up in the parse
tree relies on that column name or (2) the same fallback would be
assigned when the rule or view definition is reloaded. Unfortunately
(2) is far from certain, both because ruleutils.c might print the
expression in a different form from how it was originally written
and because FigureColname's rules might change in future releases.
So we shouldn't rely on that.
Detecting exactly whether there is any outer-level use of a SELECT
column name would be rather expensive. This patch takes the simpler
approach of just passing down a flag indicating whether there *could*
be any outer use; for example, the output column names of a SubLink
are not referenceable, and we also do not care about the names exposed
by the right-hand side of a setop. This is sufficient to suppress
unwanted clutter in all but one case in the regression tests. That
seems like reasonable evidence that it won't be too much in users'
faces, while still fixing the cases we need to fix.
Per bug #17486 from Nicolas Lutic. This issue is ancient, so
back-patch to all supported branches.
Discussion: https://postgr.es/m/17486-1ad6fd786728b8af@postgresql.org
Several places in the planner tried to clamp a double value to fit
in a "long" by doing
(long) Min(x, (double) LONG_MAX);
This is subtly incorrect, because it casts LONG_MAX to double and
potentially back again. If long is 64 bits then the double value
is inexact, and the platform might round it up to LONG_MAX+1
resulting in an overflow and an undesirably negative output.
While it's not hard to rewrite the expression into a safe form,
let's put it into a common function to reduce the risk of someone
doing it wrong in future.
In principle this is a bug fix, but since the problem could only
manifest with group count estimates exceeding 2^63, it seems unlikely
that anyone has actually hit this or will do so anytime soon. We're
fixing it mainly to satisfy fuzzer-type tools. That being the case,
a HEAD-only fix seems sufficient.
Andrey Lepikhov
Discussion: https://postgr.es/m/ebbc2efb-7ef9-bf2f-1ada-d6ec48f70e58@postgrespro.ru
The description of track_activities mentioned that it is visible to
superusers and that the information related to the current session can
be seen, without telling about pg_read_all_stats. Roles that are
granted the privileges of pg_read_all_stats can also see this
information, so mention it in the docs.
Author: Ian Barwick
Reviewed-by: Nathan Bossart
Discussion: https://postgr.es/m/CAB8KJ=jhPyYFu-A5r-ZGP+Ax715mUKsMxAGcEQ9Cx_mBAmrPow@mail.gmail.com
Backpatch-through: 10
This is based on a set of suggestions from Noah, with the following
changes made:
- The set of databases created in the tests are now prefixed with
"regression" to not trigger any warnings with name restrictions when
compiling the code with -DENFORCE_REGRESSION_TEST_NAME_RESTRICTIONS, and
now only the first name checks after the Windows case of double quotes
mixed with backslashes.
- Fix an issue with EXTRA_REGRESS_OPTS, which were not processed in a
way consistent with 027_stream_regress.pl (missing space between the
option string and pg_regress). This got introduced in 7dd3ee5.
- Add a check on the exit code of the pg_regress command, to catch
failures after running the regression tests.
Reviewed-by: Noah Misch
Discussion: https://postgr.es/m/YoHhWD5vQzb2mmiF@paquier.xyz
This new-in-v15 test case assumed it could set max_stack_depth as high
as 2MB. You might think that'd be true on any modern platform but
you'd be wrong, as I found out while experimenting with NetBSD/hppa.
This test is about privileges not platform capabilities, so there seems
no need to use any value greater than the 100kB setting already used
in a couple of places in the core regression tests. There's certainly
no call to expect people to raise their platform's default ulimit just
to run this test.
When an implicit operator family is created, it wasn't getting reported.
Make it do so.
This has always been missing. Backpatch to 10.
Author: Masahiko Sawada <sawada.mshk@gmail.com>
Reported-by: Leslie LEMAIRE <leslie.lemaire@developpement-durable.gouv.fr>
Reviewed-by: Amit Kapila <amit.kapila16@gmail.com>
Reviewed-by: Michael Paquiër <michael@paquier.xyz>
Discussion: https://postgr.es/m/f74d69e151b22171e8829551b1159e77@developpement-durable.gouv.fr
_pg_version (version number based on PostgreSQL::Version) is a field
private to Cluster.pm but there was no helper routine to retrieve it
from a Cluster's node. The same is done for install_path, for example,
and the version object becomes handy when writing tests that need
version-specific handling.
Reviewed-by: Andrew Dunstan, Daniel Gustafsson
Discussion: https://postgr.es/m/YoWfoJTc987tsxpV@paquier.xyz
It wasn't previously mentioned that the index is created as invalid,
which is confusing to new users.
Backpatch to 14 (only because of a conflict in 13).
Author: Laurenz Albe <laurenz.albe@cybertec.at>
Reported-by: Lauren Fliksteen <dancernerd32@gmail.com>
Reviewed-by: Rajakavitha Kodhandapani <krajakavitha@gmail.com>
Discussion: https://postgr.es/m/165290238488.670.7500177735573254738@wrigleys.postgresql.org
I rephrased the error messages to be more in the style of
option_parse_int(), and also made use of the new "detail" message
facility. I didn't actually use option_parse_int() (which could be
used for -n) because libpgfeutils wasn't used here yet and I wanted to
keep this just to string changes. But it could be done in the future.
The documentation didn't specify the name of the per-user service file
on Windows, and extrapolating from the pattern used for other config
files gave the wrong answer. The fact that it isn't consistent with the
others sure seems like a bug, but it's far too late to change that now;
we'd just penalize people who worked it out in the past. So, simply
document the true state of affairs.
In passing, fix some gratuitous differences between the discussions
of the service file and the password file.
Julien Rouhaud, per question from Dominique Devienne.
Backpatch to all supported branches. I (tgl) also chose to back-patch
the part of commit ba356a397 that touched libpq.sgml's description of
the service file --- in hindsight, I'm not sure why I didn't do so at
the time, as it includes some fairly essential information.
Discussion: https://postgr.es/m/CAFCRh-_mdLrh8eYVzhRzu4c8bAFEBn=rwoHOmFJcQOTsCy5nig@mail.gmail.com
This is a slight, convenient semantics change from what commit
0f0cfb4940 ("Fix parallel operations that prevent oldest xmin from
advancing") introduced that lets us simplify the coding in the one place
where it is used.
Backpatch to 13. This is related to commit 6fea65508a ("Tighten
ComputeXidHorizons' handling of walsenders") rewriting the code site
where this is used, which has not yet been backpatched, but it may well
be in the future.
Reviewed-by: Masahiko Sawada <sawada.mshk@gmail.com>
Discussion: https://postgr.es/m/202204191637.eldwa2exvguw@alvherre.pgsql
Commit 923def9a53 and 52e4f0cd47 allowed to specify column lists and row
filters for publication tables. This commit extends the
pg_publication_tables view and pg_get_publication_tables function to
display that information.
This information will be useful to users and we also need this for the
later commit that prohibits combining multiple publications with different
column lists for the same table.
Author: Hou Zhijie
Reviewed By: Amit Kapila, Alvaro Herrera, Shi Yu, Takamichi Osumi
Discussion: https://postgr.es/m/202204251548.mudq7jbqnh7r@alvherre.pgsql
We weren't checking the length of the column list in the alias clause of
an XMLTABLE or JSON_TABLE function (a "tablefunc" RTE), and it was
possible to make the server crash by passing an overly long one. Fix it
by throwing an error in that case, like the other places that deal with
alias lists.
In passing, modify the equivalent test used for join RTEs to look like
the other ones, which was different for no apparent reason.
This bug came in when XMLTABLE was born in version 10; backpatch to all
stable versions.
Reported-by: Wang Ke <krking@zju.edu.cn>
Discussion: https://postgr.es/m/17480-1c9d73565bb28e90@postgresql.org
We can use a single line to print all tuple counts that MERGE processed,
for conciseness, and elide those that are zeroes. Non-text formats
report all numbers, as is typical.
Per comment from Justin Pryzby <pryzby@telsasoft.com>
Discussion: https://postgr.es/m/20220511163350.GL19626@telsasoft.com
In order to estimate the cache hit ratio of a Memoize node, one of the
inputs we require is the estimated number of times the Memoize node will
be rescanned. The higher this number, the large the cache hit ratio is
likely to become. Unfortunately, the value being passed as the number of
"calls" to the Memoize was incorrectly using the Nested Loop's
outer_path->parent->rows instead of outer_path->rows. This failed to
account for the fact that the outer_path might be parameterized by some
upper-level Nested Loop.
This problem could lead to Memoize plans appearing more favorable than
they might actually be. It could also lead to extended executor startup
times when work_mem values were large due to the planner setting overly
large MemoizePath->est_entries resulting in the Memoize hash table being
initially made much larger than might be required.
Fix this simply by passing outer_path->rows rather than
outer_path->parent->rows. Also, adjust the expected regression test
output for a plan change.
Reported-by: Pavel Stehule
Author: David Rowley
Discussion: https://postgr.es/m/CAFj8pRAMp%3DQsMi6sPQJ4W3hczoFJRvyXHJV3AZAZaMyTVM312Q%40mail.gmail.com
Backpatch-through: 14, where Memoize was introduced
Per BF animal chipmunk: CREATE DATABASE could apparently fail due to an
AV process being in the template database and not quitting fast enough
for the 5 second timeout in CountOtherDBBackends(). The test script had
autovacuum_naptime=1s to encourage more activity and opening of fds, but
that wasn't strictly necessary for this test. Take it out.
Per BF animal skink: there was a 300s timeout for all tests in the
script, but apparently that was not enough under valgrind. Let's use
the standard timeout $PostgreSQL::Test::Utils::timeout_default, but
restart it for each query we run.
Reviewed-by: Robert Haas <robertmhaas@gmail.com>
Discussion: https://postgr.es/m/CA%2BhUKGKa8HNJaA24gqiiFoGy0ysndeVoJsHvX_q1-DVLFaGAmw%40mail.gmail.com
I started out with the intention to rename value_type to item_type to
avoid a collision with a typedef name that appears on some platforms.
Along the way, I noticed that the adjacent field "format" was not being
correctly handled by the backend/nodes/ infrastructure functions:
copyfuncs.c erroneously treated it as a scalar, while equalfuncs,
outfuncs, and readfuncs omitted handling it at all. This looks like
it might be cosmetic at the moment because the field is always NULL
after parse analysis; but that's likely a bug in itself, and the code's
certainly not very future-proof. Let's fix it while we can still do so
without forcing an initdb on beta testers.
Further study found a few other inconsistencies in the backend/nodes/
infrastructure for the recently-added JSON node types, so fix those too.
catversion bumped because of potential change in stored rules.
Discussion: https://postgr.es/m/526703.1652385613@sss.pgh.pa.us
Tom Lane
Bruce Momjian
Michael Paquier
Andres Freund
Peter Eisentraut
John Naylor
Alvaro Herrera
Andrew Dunstan
David Rowley
Amit Kapila
Thomas Munro