| Commit message (Collapse) | Author | Age |
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The documentation for ts_headline() recommends using a sub-select to
avoid extra evaluations of ts_headline() in a query with ORDER BY+LIMIT.
Since commit 9118d03a8 this contortionism is unnecessary, so remove the
recommendation. Noted by Oleg Bartunov.
Discussion: <CAF4Au4w6rrH_j1bvVhzpOsRiHCog7sGJ3LSX0tY8ZdwhHT88LQ@mail.gmail.com>
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Commit 23a27b039 widened these from uint32 to uint64, but I overlooked
that the documentation explicitly showed them as uint32. Per report
from Vicky Vergara.
Report: <20161111135422.8761.36733@wrigleys.postgresql.org>
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The reloptions stuff allows this option to be set on a matview.
While it's questionable whether that is useful or was really intended,
it does work, and we shouldn't change that in minor releases. Commit
e3e66d8a9 disabled the option since I didn't realize that it was
possible for it to be set on a matview. Tweak the test to re-allow it.
Discussion: <19749.1478711862@sss.pgh.pa.us>
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The plan generated for sorted partial aggregation with "GROUP BY constant"
included a Sort node with no sort keys, which the executor does not like.
Per report from Steve Randall. I'd add a regression test case if I could
think of a compact one, but it doesn't seem worth expending lots of cycles
on.
Report: <CABVd52UAdGXpg_rCk46egpNKYdXOzCjuJ1zG26E2xBe_8bj+Fg@mail.gmail.com>
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In each case, absence of a trailing newline would itself constitute a
PostgreSQL bug. Therefore, this slightly enhances the changed tests.
This works around a bug that last appeared in Perl 5.8.8, fixing
src/test/modules/test_pg_dump when run against that version. Commit
e7293e3271bf618eeb2d4779a15fc516a69fe463 worked around the bug, but the
subsequent addition of test_pg_dump introduced affected code. As that
commit had shown, slight increases in pattern complexity can suppress
the bug. This commit edits qr/foo$/m patterns too complex to encounter
the bug today, for style consistency and robustness against unrelated
pattern changes. Back-patch to 9.6, where test_pg_dump was introduced.
As of this writing, a fresh MSYS installation includes an affected Perl
5.8.8. The Perl 5.8.8 in Red Hat Enterprise Linux 5.11 carries a patch
that renders it unaffected, but the Perl 5.8.5 of Red Hat Enterprise
Linux 4.4 is affected.
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We really ought to make StdRdOptions and the other decoded forms of
reloptions self-identifying, but for the moment, assume that only plain
relations could possibly be user_catalog_tables. Fixes problem with bogus
"ON CONFLICT is not supported on table ... used as a catalog table" error
when target is a view with cascade option.
Discussion: <26681.1477940227@sss.pgh.pa.us>
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In pg_log_v(), we need to translate the fmt before processing, not the
formatted message afterwards.
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This was already fixed in HEAD as part of 6ad8ac60 but was not
backpatched.
Also change the way pg_xlog is handled to be the same as the other
directories.
Patch from me with pg_xlog addition from Michael Paquier, test updates
from David Steele.
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For a very long time, pltcl's spi_exec and spi_execp commands have had
a behavior of storing the current row number as an element of output
arrays, but this was never documented. Fix that.
For an equally long time, pltcl_trigger_handler had a behavior of silently
ignoring ".tupno" as an output column name, evidently so that the result
of spi_exec could be used directly as a trigger result tuple. Not sure
how useful that really is, but in any case it's bad that it would break
attempts to use ".tupno" as an actual column name. We can fix it by not
checking for ".tupno" until after we check for a column name match. This
comports with the effective behavior of spi_exec[p] that ".tupno" is only
magic when you don't have an actual column named that.
In passing, wordsmith the description of returning modified tuples from
a pltcl trigger.
Noted while working on Jim Nasby's patch to support composite results
from pltcl. The inability to return trigger tuples using ".tupno" as
a column name is a bug, so back-patch to all supported branches.
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We must do this in case the expression evaluation results in calling
another plpgsql function (or, really, anything using SPI). I missed
the need for this when I converted exec_cast_value() from doing a
simple InputFunctionCall() to doing ExecEvalExpr() in commit 1345cc67b.
There is a SPI_push_conditional in InputFunctionCall(), so that there
was no bug before that.
Per bug #14414 from Marcos Castedo. Add a regression test based on his
example, which was that a plpgsql function in a domain check constraint
didn't work when assigning to a domain-type variable within plpgsql.
Report: <20161106010947.1387.66380@wrigleys.postgresql.org>
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The workaround the IANA guys chose to get rid of the clang warning
we'd silenced in commit 23ed2ba81 turns out not to satisfy Coverity.
Go back to the previous solution, ie, remove the useless comparison
to SIZE_MAX. (In principle, there could be machines out there where
it's not useless because ptrdiff_t is wider than size_t. But the whole
thing is pretty academic anyway, as we could never approach this limit
for any sane estimate of the amount of data that zic will ever be asked
to work with.)
Also, s/lineno/lineno_t/g, because if we accept their decision to start
using "lineno" as a typedef, it is going to have very unpleasant
consequences in our next pgindent run. Noted that while fooling with
pltcl yesterday.
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Seems to be a copy-and-pasteo. Odd that we heard no reports of
compiler warnings about it.
Thomas Munro
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Back-patch commits 84ad68d64 and 367b99bbb.
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This patch absorbs some unreleased fixes for symlink manipulation bugs
introduced in tzcode 2016g. Ordinarily I'd wait around for a released
version, but in this case it seems like we could do with extra testing,
in particular checking whether it works in EDB's VMware build environment.
This corresponds to commit aec59156abbf8472ba201b6c7ca2592f9c10e077 in
https://github.com/eggert/tz.
Per a report from Sandeep Thakkar, building in an environment where hard
links are not supported in the timezone data installation directory failed,
because upstream code refactoring had broken the case of symlinking from an
existing symlink. Further experimentation also showed that the symlinks
were sometimes made incorrectly, with too many or too few "../"'s in the
symlink contents.
Back-patch of commit 1f87181e12beb067d21b79493393edcff14c190b.
Report: <CANFyU94_p6mqRQc2i26PFp5QAOQGB++AjGX=FO8LDpXw0GSTjw@mail.gmail.com>
Discussion: http://mm.icann.org/pipermail/tz/2016-November/024431.html
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The foreign-key-aware logic for estimation of join sizes (added in commit
100340e2d) blindly tried to apply the concept to rels that are actually
parents of inheritance trees. This is just plain wrong so far as the
referenced relation is concerned, since the inheritance scan may well
produce lots of rows that are not participating in the constraint. It's
wrong for the referencing relation too, for the same reason; although on
that end we could conceivably detect whether all members of the inheritance
tree have equivalent FK constraints pointing to the same referenced rel,
and then proceed more or less as we do now. But pending somebody writing
code to do that, we must disable this, because it's producing completely
silly estimates when there's an FK linking the heads of inheritance trees.
Per bug #14404 from Clinton Adams. Back-patch to 9.6 where the new
estimation logic came in.
Report: <20161028200412.15987.96482@wrigleys.postgresql.org>
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While converting expressions in an upper-level plan node so that they
reference Vars and expressions provided by the input plan node(s),
don't convert plain Const items, even if there happens to be a matching
Const in the input. It's silly to do so because a Var is more expensive to
execute than a Const. Moreover, converting can fool ExecCheckPlanOutput's
check that an insert or update query inserts nulls into dropped columns,
leading to "query provides a value for a dropped column" errors during
INSERT or UPDATE on a table with a dropped column. We could solve this
by making that check more complicated, but I don't see the point; this fix
should save a marginal number of cycles, and it also makes for less messy
EXPLAIN output, as shown by the ensuing regression test result changes.
Per report from Pavel Hanák. I have not incorporated a test case based
on that example, as there doesn't seem to be a simple way of checking
this in isolation without making a bunch of assumptions about other
planner and SQL-function behavior.
Back-patch to 9.6. This setrefs.c behavior exists much further back,
but there is not currently reason to think that it causes problems
before 9.6.
Discussion: <83shraampf.fsf@is-it.eu>
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Somebody apparently thought that "if Int32GetDatum is good,
Int64GetDatum must be better". Per buildfarm failures now
that Peter has added some regression tests here.
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Per Shinichi Matsuda.
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tsquery_rewrite() tries to find matches to subsets of AND/OR conditions;
for example, in the query 'a | b | c' the substitution subquery 'a | c'
should match and lead to replacement of the first and third items.
That's fine, but the matching algorithm apparently takes about O(2^N)
for an N-clause query (I say "apparently" because the code is also both
unintelligible and uncommented). We could probably do better than that
even without any extra assumptions --- but actually, we know that the
subclauses are sorted, indeed are depending on that elsewhere in this very
same function. So we can just scan the two lists a single time to detect
matches, as though we were doing a merge join.
Also do a re-flattening call (QTNTernary()) in tsquery_rewrite_query, just
to make sure that the tree fits the expectations of the next search cycle.
I didn't try to devise a test case for this, but I'm pretty sure that the
oversight could have led to failure to match in some cases where a match
would be expected.
Improve comments, and also stick a CHECK_FOR_INTERRUPTS into
dofindsubquery, just in case it's still too slow for somebody.
Per report from Andreas Seltenreich. Back-patch to all supported branches.
Discussion: <8760oasf2y.fsf@credativ.de>
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QTNTernary() contains logic to flatten, eg, '(a & b) & c' into 'a & b & c',
which is all well and good, but it tries to do that to NOT nodes as well,
so that '!!a' gets changed to '!a'. Explicitly restrict the conversion to
be done only on AND and OR nodes, and add a test case illustrating the bug.
In passing, provide some comments for the sadly naked functions in
tsquery_util.c, and simplify some baroque logic in QTNFree(), which
I think may have been leaking some items it intended to free.
Noted while investigating a complaint from Andreas Seltenreich.
Back-patch to all supported versions.
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In the previous coding, if an aggregate's transition function returned an
expanded array, nodeAgg.c and nodeWindowAgg.c would always copy it and thus
force it into the flat representation. This led to ping-ponging between
flat and expanded formats, which costs a lot. For an aggregate using
array_append as transition function, I measured about a 15X slowdown
compared to the pre-9.5 code, when working on simple int[] arrays.
Of course, the old code was already O(N^2) in this usage due to copying
flat arrays all the time, but it wasn't quite this inefficient.
To fix, teach nodeAgg.c and nodeWindowAgg.c to allow expanded transition
values without copying, so long as the transition function takes care to
return the transition value already properly parented under the aggcontext.
That puts a bit of extra responsibility on the transition function, but
doing it this way allows us to not need any extra logic in the fast path
of advance_transition_function (ie, with a pass-by-value transition value,
or with a modified-in-place pass-by-reference value). We already know
that that's a hot spot so I'm loath to add any cycles at all there. Also,
while only array_append currently knows how to follow this convention,
this solution allows other transition functions to opt-in without needing
to have a whitelist in the core aggregation code.
(The reason we would need a whitelist is that currently, if you pass a
R/W expanded-object pointer to an arbitrary function, it's allowed to do
anything with it including deleting it; that breaks the core agg code's
assumption that it should free discarded values. Returning a value under
aggcontext is the transition function's signal that it knows it is an
aggregate transition function and will play nice. Possibly the API rules
for expanded objects should be refined, but that would not be a
back-patchable change.)
With this fix, an aggregate using array_append is no longer O(N^2), so it's
much faster than pre-9.5 code rather than much slower. It's still a bit
slower than the bespoke infrastructure for array_agg, but the differential
seems to be only about 10%-20% rather than orders of magnitude.
Discussion: <6315.1477677885@sss.pgh.pa.us>
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This bug exists as far back as 9.0, when Hot Standby was introduced,
so back-patch to all supported branches.
Report and patch by Takayuki Tsunakawa, reviewed by Michael Paquier
and Kuntal Ghosh.
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If a restartpoint flushed no dirty buffers, it could fail to update
the minimum recovery point, leading to a minimum recovery point prior
to the starting REDO location. perform_base_backup() would interpret
that as meaning that no WAL files at all needed to be included in the
backup, failing an internal sanity check. To fix, have restartpoints
always update the minimum recovery point to just after the checkpoint
record itself, so that the file (or files) containing the checkpoint
record will always be included in the backup.
Code by Amit Kapila, per a design suggestion by me, with some
additional work on the code comment by me. Test case by Michael
Paquier. Report by Kyotaro Horiguchi.
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The code to change the deferrability properties of a foreign-key constraint
updated all the associated triggers to match; but a moment's examination of
the code that creates those triggers in the first place shows that only
some of them should track the constraint's deferrability properties. This
leads to odd failures in subsequent exercise of the foreign key, as the
triggers are fired at the wrong times. Fix that, and add a regression test
comparing the trigger properties produced by ALTER CONSTRAINT with those
you get by creating the constraint as-intended to begin with.
Per report from James Parks. Back-patch to 9.4 where this ALTER
functionality was introduced.
Report: <CAJ3Xv+jzJ8iNNUcp4RKW8b6Qp1xVAxHwSXVpjBNygjKxcVuE9w@mail.gmail.com>
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I broke this in commit f3094920a. Apparently it's dead code anyway,
at least as far as our buildfarm is concerned (and the upstream IANA
code doesn't worry at all about symlink() not being present).
But as long as the rest of our code is willing to guard against not
having symlink(), this should too. Noted while investigating a
tangentially-related complaint from Sandeep Thakkar.
Back-patch to keep branches in sync.
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Clarify documentation about inheritance of check constraints, in
particular mentioning the NO INHERIT option, which didn't exist when
this text was written.
Document that in an inherited query, the applicable row security policies
are those of the explicitly-named table, not its children. This is the
intended behavior (per off-list discussion with Stephen Frost), and there
are regression tests for it, but it wasn't documented anywhere user-facing
as far as I could find.
Do a bit of wordsmithing on the description of inherited access-privilege
checks.
Back-patch to 9.5 where RLS was added.
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Vinayak Pokale
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Daniel Gustafsson
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Source-Git-URL: git://git.postgresql.org/git/pgtranslation/messages.git
Source-Git-Hash: e4e428572533133cac4ecefd69d251a0b5674fa3
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An oversight in setting the boundaries of known commit timestamps during
startup caused old commit timestamps to become inaccessible after a
server restart.
Author and reporter: Julien Rouhaud
Review, test code: Craig Ringer
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INSERT ... ON CONFLICT (specifically ExecCheckHeapTupleVisible) contains
another example of this unsafe coding practice. It is much harder to get
a failure out of it than the case fixed in commit 6292c2339, because in
most scenarios any hint bits that could be set would have already been set
earlier in the command. However, Konstantin Knizhnik reported a failure
with a custom transaction manager, and it's clearly possible to get a
failure via a race condition in async-commit mode.
For lack of a reproducible example, no regression test case in this
commit.
I did some testing with Asserts added to tqual.c's functions, and can say
that running "make check-world" exposed these two bugs and no others.
The Asserts are messy enough that I've not added them to the code for now.
Report: <57EE93C8.8080504@postgrespro.ru>
Related-Discussion: <CAO3NbwOycQjt2Oqy2VW-eLTq2M5uGMyHnGm=RNga4mjqcYD7gQ@mail.gmail.com>
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A transaction that conflicts against itself, for example
INSERT INTO t(pk) VALUES (1),(1) ON CONFLICT DO NOTHING;
should behave the same regardless of isolation level. It certainly
shouldn't throw a serialization error, as retrying will not help.
We got this wrong due to the ON CONFLICT logic not considering the case,
as reported by Jason Dusek.
Core of this patch is by Peter Geoghegan (based on an earlier patch by
Thomas Munro), though I didn't take his proposed code refactoring for fear
that it might have unexpected side-effects. Test cases by Thomas Munro
and myself.
Report: <CAO3NbwOycQjt2Oqy2VW-eLTq2M5uGMyHnGm=RNga4mjqcYD7gQ@mail.gmail.com>
Related-Discussion: <57EE93C8.8080504@postgrespro.ru>
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Despite the argumentation I wrote in commit 7a2fe85b0, it's unsafe to do
this, because in corner cases it's possible for HeapTupleSatisfiesSelf
to try to set hint bits on the target tuple; and at least since 8.2 we
have required the buffer content lock to be held while setting hint bits.
The added regression test exercises one such corner case. Unpatched, it
causes an assertion failure in assert-enabled builds, or otherwise would
cause a hint bit change in a buffer we don't hold lock on, which given
the right race condition could result in checksum failures or other data
consistency problems. The odds of a problem in the field are probably
pretty small, but nonetheless back-patch to all supported branches.
Report: <19391.1477244876@sss.pgh.pa.us>
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Show how to get the system's huge page size, rather than misleadingly
referring to PAGE_SIZE (which is usually understood to be the regular
page size). Show how to confirm whether huge pages have been allocated.
Minor wordsmithing. Back-patch to 9.4 where this section appeared.
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Replace "Full path to ..." with "Full path name of ...". At least one
user has misinterpreted the existing wording as meaning "Directory
containing ...".
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With track_io_timing = on, EXPLAIN (ANALYZE, BUFFERS) will emit fields
named like "I/O Read Time". The slash makes that invalid as an XML
element name, so that adding FORMAT XML would produce invalid XML.
We already have code in there to translate spaces to dashes, so let's
generalize that to convert anything that isn't a valid XML name character,
viz letters, digits, hyphens, underscores, and periods. We could just
reject slashes, which would run a bit faster. But the fact that this went
unnoticed for so long doesn't give me a warm feeling that we'd notice the
next creative violation, so let's make it a permanent fix.
Reported by Markus Winand, though this isn't his initial patch proposal.
Back-patch to 9.2 where track_io_timing was added. The problem is only
latent in 9.1, so I don't feel a need to fix it there.
Discussion: <E0BF6A45-68E8-45E6-918F-741FB332C6BB@winand.at>
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This absorbs a fix for a symlink-manipulation bug in zic that was
introduced in 2016g. It probably isn't interesting for our use-case,
but I'm not quite sure, so let's update while we're at it.
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(Didn't I just do this? Oh well.)
DST law changes in Palestine. Historical corrections for Turkey.
Switch to numeric abbreviations for Asia/Colombo.
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clang points out that SIZE_MAX wouldn't fit into an int, which means
this comparison is pretty useless. Per report from Thomas Munro.
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Per buildfarm.
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This is mostly to absorb some corner-case fixes in zic for year-2037
timestamps. The other changes that have been made are unlikely to affect
our usage, but nonetheless we may as well take 'em.
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IANA got rid of the really silly "abbreviation" and replaced it with one
that's only moderately silly. But it's still pointless, so keep on not
showing it.
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DST law changes in Turkey. Historical corrections for America/Los_Angeles,
Europe/Kirov, Europe/Moscow, Europe/Samara, and Europe/Ulyanovsk.
Rename Asia/Rangoon to Asia/Yangon, with a backward compatibility link.
The IANA crew continue their campaign to replace invented time zone
abbrevations with numeric GMT offsets. This update changes numerous zones
in Antarctica and the former Soviet Union, for instance Antarctica/Casey
now reports "+08" not "AWST" in the pg_timezone_names view. I kept these
abbreviations in the tznames/ data files, however, so that we will still
accept them for input. (We may want to start trimming those files someday,
but today is not that day.)
An exception is that since IANA no longer claims that "AMT" is in use
in Armenia for GMT+4, I replaced it in the Default file with GMT-4,
corresponding to Amazon Time which is in use in South America. It may be
that that meaning is also invented and IANA will drop it in a future
update; but for now, it seems silly to give pride of place to a meaning
not traceable to IANA over one that is.
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When a relation is truncated, it is important that the FSM is truncated as
well. Otherwise, after recovery, the FSM can return a page that has been
truncated away, leading to errors like:
ERROR: could not read block 28991 in file "base/16390/572026": read only 0
of 8192 bytes
We were using MarkBufferDirtyHint() to dirty the buffer holding the last
remaining page of the FSM, but during recovery, that might in fact not
dirty the page, and the FSM update might be lost.
To fix, use the stronger MarkBufferDirty() function. MarkBufferDirty()
requires us to do WAL-logging ourselves, to protect from a torn page, if
checksumming is enabled.
Also fix an oversight in visibilitymap_truncate: it also needs to WAL-log
when checksumming is enabled.
Analysis by Pavan Deolasee.
Discussion: <CABOikdNr5vKucqyZH9s1Mh0XebLs_jRhKv6eJfNnD2wxTn=_9A@mail.gmail.com>
Backpatch to 9.3, where we got data checksums.
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CommandId is declared as uint32, and values up to 4G are indeed legal.
cidout() handles them properly by treating the value as unsigned int.
But cidin() was just using atoi(), which has platform-dependent behavior
for values outside the range of signed int, as reported by Bart Lengkeek
in bug #14379. Use strtoul() instead, as xidin() does.
In passing, make some purely cosmetic changes to make xidin/xidout
look more like cidin/cidout; the former didn't have a monopoly on
best practice IMO.
Neither xidin nor cidin make any attempt to throw error for invalid input.
I didn't change that here, and am not sure it's worth worrying about
since neither is really a user-facing type. The point is just to ensure
that indubitably-valid inputs work as expected.
It's been like this for a long time, so back-patch to all supported
branches.
Report: <20161018152550.1413.6439@wrigleys.postgresql.org>
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Have tuplesort_gettupleslot() copy the contents of its current table slot
as needed. This is based on an approach taken by tuplestore_gettupleslot().
In the future, tuplesort_gettupleslot() may also be taught to avoid copying
the tuple where caller can determine that that is safe (the
tuplestore_gettupleslot() interface already offers this option to callers).
Patch by Peter Geoghegan. Fixes bug #14344, reported by Regina Obe.
Report: <20160929035538.20224.39628@wrigleys.postgresql.org>
Backpatch-through: 9.6
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