| Commit message (Collapse) | Author | Age |
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The new indent version includes numerous fixes thanks to Piotr Stefaniak.
The main changes visible in this commit are:
* Nicer formatting of function-pointer declarations.
* No longer unexpectedly removes spaces in expressions using casts,
sizeof, or offsetof.
* No longer wants to add a space in "struct structname *varname", as
well as some similar cases for const- or volatile-qualified pointers.
* Declarations using PG_USED_FOR_ASSERTS_ONLY are formatted more nicely.
* Fixes bug where comments following declarations were sometimes placed
with no space separating them from the code.
* Fixes some odd decisions for comments following case labels.
* Fixes some cases where comments following code were indented to less
than the expected column 33.
On the less good side, it now tends to put more whitespace around typedef
names that are not listed in typedefs.list. This might encourage us to
put more effort into typedef name collection; it's not really a bug in
indent itself.
There are more changes coming after this round, having to do with comment
indentation and alignment of lines appearing within parentheses. I wanted
to limit the size of the diffs to something that could be reviewed without
one's eyes completely glazing over, so it seemed better to split up the
changes as much as practical.
Discussion: https://postgr.es/m/E1dAmxK-0006EE-1r@gemulon.postgresql.org
Discussion: https://postgr.es/m/30527.1495162840@sss.pgh.pa.us
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This is just to have a clean basis for comparison with the results of
the new version (which will indeed end up reverting some of these
changes...)
Discussion: https://postgr.es/m/E1dAmxK-0006EE-1r@gemulon.postgresql.org
Discussion: https://postgr.es/m/30527.1495162840@sss.pgh.pa.us
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A table partition must be a table, not a view, so don't allow a
"_RETURN" rule to be added that would convert an existing table
partition into a view.
Amit Langote
Discussion: https://postgr.es/m/CAEZATCVzFcAjZwC1bTFvJ09skB_sgkF4SwPKMywev-XTnimp9Q%40mail.gmail.com
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Etsuro Fujita
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Author: Masahiko Sawada <sawada.mshk@gmail.com>
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load_libraries(), which processes the various xxx_preload_libraries GUCs,
was parsing them using SplitIdentifierString() which isn't really
appropriate for values that could be path names: it downcases unquoted
text, and it doesn't allow embedded whitespace unless quoted.
Use SplitDirectoriesString() instead. That also allows us to simplify
load_libraries() a bit, since canonicalize_path() is now done for it.
While this definitely seems like a bug fix, it has the potential to
break configuration settings that accidentally worked before because
of the downcasing behavior. Also, there's an easy workaround for the
bug, namely to double-quote troublesome text. Hence, no back-patch.
QL Zhuo, tweaked a bit by me
Discussion: https://postgr.es/m/CAB-oJtxHVDc3H+Km3CjB9mY1VDzuyaVH_ZYSz7iXcRqCtb93Ew@mail.gmail.com
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Viewing a table with \d in psql also shows the publications at table is
in. If a publication is concurrently dropped, this shows an error,
because the view pg_publication_tables internally uses
pg_get_publication_tables(), which uses a catalog snapshot. This can be
particularly annoying if a for-all-tables publication is concurrently
dropped.
To avoid that, write the query in psql differently. Expose the function
pg_relation_is_publishable() to SQL and write the query using that.
That still has a risk of being affected by concurrent catalog changes,
but in this case it would be a table drop that causes problems, and then
the psql \d command wouldn't be interesting anymore anyway.
Reported-by: Tom Lane <tgl@sss.pgh.pa.us>
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David Rowley found that the "use the smallest per-column selectivity"
heuristic applied in some cases by get_foreign_key_join_selectivity()
was badly off if the FK columns are independent, producing estimates
much worse than we got before that code was added in 9.6.
One case where that heuristic was used was for LEFT and FULL outer joins
with the referenced rel on the outside of the join. But we should not
really need to special-case those here. eqjoinsel() never has had such a
special case; the correction is applied by calc_joinrel_size_estimate()
instead. Let's just estimate such cases like inner joins and rely on that
later adjustment. (I think there was something of a thinko here, in that
the comments seem to be thinking about the selectivity as defined for
semi/anti joins; but that shouldn't apply to left/full joins.) Add a
regression test exercising such a case to show that this is sane in
at least some cases.
The other case where we used that heuristic was for SEMI/ANTI outer joins,
either if the referenced rel was on the outside, or if it was on the inside
but was part of a join within the RHS. In either case, the FK doesn't give
us a lot of traction towards estimating the selectivity. To ensure that
we don't have regressions from what happened before 9.6, let's punt by
ignoring the FK in such cases and applying the traditional selectivity
calculation. (We might be able to improve on that later, but for now
I just want to be sure it's not worse than 9.5.)
Report and patch by David Rowley, simplified a bit by me. Back-patch
to 9.6 where this code was added.
Discussion: https://postgr.es/m/CAKJS1f8NO8oCDcxrteohG6O72uU1saEVT9qX=R8pENr5QWerXw@mail.gmail.com
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When, during logical decoding, a transaction gets too big, it's
contents get spilled to disk. Not just the top-transaction gets
spilled, but *also* all of its subtransactions, even if they're not
that large themselves. Unfortunately we didn't clean up
such small spilled subtransactions from disk.
Fix that, by keeping better track of whether a transaction has been
spilled to disk.
Author: Andres Freund
Reported-By: Dmitriy Sarafannikov, Fabrízio de Royes Mello
Discussion:
https://postgr.es/m/1457621358.355011041@f382.i.mail.ru
https://postgr.es/m/CAFcNs+qNMhNYii4nxpO6gqsndiyxNDYV0S=JNq0v_sEE+9PHXg@mail.gmail.com
Backpatch: 9.4-, where logical decoding was introduced
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This ensures that triggers can see an up-to-date timestamp.
Reported-by: Konstantin Evteev <konst583@gmail.com>
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Author: Daniel Gustafsson <daniel@yesql.se>
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This allows us to combine the opening and the ownership check.
Reported-by: Robert Haas <robertmhaas@gmail.com>
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Windows uses a separate code path for libc locales. The code previously
ended up there also if an ICU collation should be used, leading to a
crash.
Reported-by: Ashutosh Sharma <ashu.coek88@gmail.com>
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When a new base type is created using the old-style procedure of first
creating the input/output functions with "opaque" in place of the base
type, the "opaque" argument/return type is changed to the final base type,
on CREATE TYPE. However, we did not create a pg_depend record when doing
that, so the functions were left not depending on the type.
Fixes bug #14706, reported by Karen Huddleston.
Discussion: https://www.postgresql.org/message-id/20170614232259.1424.82774@wrigleys.postgresql.org
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The _equalTableFunc() omission of coltypmods has semantic significance,
but I did not track down resulting user-visible bugs, if any. The other
changes are cosmetic only, affecting order. catversion bump due to
readfuncs.c field order change.
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We had three occurrences of essentially the same coding pattern
wherein we tried to retrieve a query result from a libpq connection
without blocking. In the case where PQconsumeInput failed (typically
indicating a lost connection), all three loops simply gave up and
returned, forgetting to clear any previously-collected PGresult
object. Since those are malloc'd not palloc'd, the oversight results
in a process-lifespan memory leak.
One instance, in libpqwalreceiver, is of little significance because
the walreceiver process would just quit anyway if its connection fails.
But we might as well fix it.
The other two instances, in postgres_fdw, are somewhat more worrisome
because at least in principle the scenario could be repeated, allowing
the amount of memory leaked to build up to something worth worrying
about. Moreover, in these cases the loops contain CHECK_FOR_INTERRUPTS
calls, as well as other calls that could potentially elog(ERROR),
providing another way to exit without having cleared the PGresult.
Here we need to add PG_TRY logic similar to what exists in quite a
few other places in postgres_fdw.
Coverity noted the libpqwalreceiver bug; I found the other two cases
by checking all calls of PQconsumeInput.
Back-patch to all supported versions as appropriate (9.2 lacks
postgres_fdw, so this is really quite unexciting for that branch).
Discussion: https://postgr.es/m/22620.1497486981@sss.pgh.pa.us
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Avoid using prefix "staext" when everything else uses "statext".
Author: Kyotaro HORIGUCHI
Discussion: https://postgr.es/m/20170615.140041.165731947.horiguchi.kyotaro@lab.ntt.co.jp
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Commit 18ce3a4ab22d2984f8540ab480979c851dae5338 failed to update
the comments in parsenodes.h for the new members, and made only
incomplete updates to src/backend/nodes
Thomas Munro, per a report from Noah Misch.
Discussion: http://postgr.es/m/20170611062525.GA1628882@rfd.leadboat.com
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Previously we required every exported transaction to have an xid
assigned. That was used to check that the exporting transaction is
still running, which in turn is needed to guarantee that that
necessary rows haven't been removed in between exporting and importing
the snapshot.
The exported xid caused unnecessary problems with logical decoding,
because slot creation has to wait for all concurrent xid to finish,
which in turn serializes concurrent slot creation. It also
prohibited snapshots to be exported on hot-standby replicas.
Instead export the virtual transactionid, which avoids the unnecessary
serialization and the inability to export snapshots on standbys. This
changes the file name of the exported snapshot, but since we never
documented what that one means, that seems ok.
Author: Petr Jelinek, slightly editorialized by me
Reviewed-By: Andres Freund
Discussion: https://postgr.es/m/f598b4b8-8cd7-0d54-0939-adda763d8c34@2ndquadrant.com
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In a CHECK clause, a null result means true, whereas in a WHERE clause
it means false. predtest.c provided different functions depending on
which set of semantics applied to the predicate being proved, but had
no option to control what a null meant in the clauses provided as
axioms. Add one.
Use that in the partitioning code when figuring out whether the
validation scan on a new partition can be skipped. Rip out the
old logic that attempted (not very successfully) to compensate
for the absence of the necessary support in predtest.c.
Ashutosh Bapat and Robert Haas, reviewed by Amit Langote and
incorporating feedback from Tom Lane.
Discussion: http://postgr.es/m/CAFjFpReT_kq_uwU_B8aWDxR7jNGE=P0iELycdq5oupi=xSQTOw@mail.gmail.com
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The optimized code in 728bd991c3c4 contains a few invalid locking
sequences. To wit, the original code would try to acquire an lwlock
that it already holds. Avoid this by moving lock acquisitions to
higher-level code, and install appropriate assertions in low-level that
the correct mode is held.
Authors: Michael Paquier, Álvaro Herrera
Reported-By: chuanting wang
Bug: #14680
Discussion: https://postgr.es/m/20170531033228.1487.10124@wrigleys.postgresql.org
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expression_returns_set() used to short-circuit its recursion upon
seeing certain node types, such as DistinctExpr, that it knew the
executor did not support set-valued arguments for. That was never
inherent, though, just a reflection of laziness in execQual.c.
With the new implementation of SRFs there is no reason to think
that any scalar-valued expression node could not have a set-valued
subexpression, except for AggRefs and WindowFuncs where we know there
is a parser check rejecting it. And indeed, the shortcut causes
unexpected failures for cases such as a SRF underneath DistinctExpr,
because the planner stops looking for SRFs too soon.
Discussion: https://postgr.es/m/5259.1497044025@sss.pgh.pa.us
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In commits 2f5c9d9c9 and ab0289651 we invented an abstraction layer
to insulate catalog manipulations from direct heap update calls.
But evidently some patches that hadn't landed in-tree at that point
didn't get the memo completely. Fix a couple of direct calls to
simple_heap_delete to use CatalogTupleDelete instead; these appear
to have been added in commits 7c4f52409 and 7b504eb28. This change is
purely cosmetic ATM, but there's no point in having an abstraction layer
if we allow random code to break it.
Masahiko Sawada and Tom Lane
Discussion: https://postgr.es/m/CAD21AoDOPRSVcwbnCN3Y1n_68ATyTspsU6=ygtHz_uY0VcdZ8A@mail.gmail.com
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Table partitioning, introduced in commit f0e44751d7, added a new
relkind - RELKIND_PARTITIONED_TABLE. Update
RemoveRoleFromObjectPolicy() to handle it, otherwise DROP OWNED BY
will fail if the role has any RLS policies referring to partitioned
tables.
Dean Rasheed, reviewed by Amit Langote.
Discussion: https://postgr.es/m/CAEZATCUnNOKN8sLML9jUzxecALWpEXK3a3W7y0PgFR4%2Buhgc%3Dg%40mail.gmail.com
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When we reimplemented SRFs in commit 69f4b9c85, our initial choice was
to allow the behavior to vary from historical practice in cases where a
SRF call appeared within a conditional-execution construct (currently,
only CASE or COALESCE). But that was controversial to begin with, and
subsequent discussion has resulted in a consensus that it's better to
throw an error instead of executing the query differently from before,
so long as we can provide a reasonably clear error message and a way to
rewrite the query.
Hence, add a parser mechanism to allow detection of such cases during
parse analysis. The mechanism just requires storing, in the ParseState,
a pointer to the set-returning FuncExpr or OpExpr most recently emitted
by parse analysis. Then the parsing functions for CASE and COALESCE can
detect the presence of a SRF in their arguments by noting whether this
pointer changes while analyzing their arguments. Furthermore, if it does,
it provides a suitable error cursor location for the complaint. (This
means that if there's more than one SRF in the arguments, the error will
point at the last one to be analyzed not the first. While connoisseurs of
parsing behavior might find that odd, it's unlikely the average user would
ever notice.)
While at it, we can also provide more specific error messages than before
about some pre-existing restrictions, such as no-SRFs-within-aggregates.
Also, reject at parse time cases where a NULLIF or IS DISTINCT FROM
construct would need to return a set. We've never supported that, but the
restriction is depended on in more subtle ways now, so it seems wise to
detect it at the start.
Also, provide some documentation about how to rewrite a SRF-within-CASE
query using a custom wrapper SRF.
It turns out that the information_schema.user_mapping_options view
contained an instance of exactly the behavior we're now forbidding; but
rewriting it makes it more clear and safer too.
initdb forced because of user_mapping_options change.
Patch by me, with error message suggestions from Alvaro Herrera and
Andres Freund, pursuant to a complaint from Regina Obe.
Discussion: https://postgr.es/m/000001d2d5de$d8d66170$8a832450$@pcorp.us
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This is just to have a clean base state for testing of Piotr Stefaniak's
latest version of FreeBSD indent. I fixed up a couple of places where
pgindent would have changed format not-nicely. perltidy not included.
Discussion: https://postgr.es/m/VI1PR03MB119959F4B65F000CA7CD9F6BF2CC0@VI1PR03MB1199.eurprd03.prod.outlook.com
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This doesn't actually matter at present, because the current code
never consults null_index for range partitions. However, leaving
it uninitialized is still a bad idea, so let's not do that.
Amul Sul, reviewed by Ashutosh Bapat
Discussion: http://postgr.es/m/CAAJ_b94AkEzcx+12ySCnbMDX7=UdF4BjnoBGfMQbB0RNSTo3Ng@mail.gmail.com
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Table partitioning, introduced in commit f0e44751d7, added a new
relkind - RELKIND_PARTITIONED_TABLE. Update relation_is_updatable() to
handle it. Specifically, partitioned tables and simple views built on
top of them are updatable.
This affects the SQL-callable functions pg_relation_is_updatable() and
pg_column_is_updatable(), and the views information_schema.views and
information_schema.columns.
Dean Rasheed, reviewed by Ashutosh Bapat.
Discussion: https://postgr.es/m/CAEZATCXnbiFkMXgF4Ez1pmM2c-tS1z33bSq7OGbw7QQhHov%2B6Q%40mail.gmail.com
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Otherwise, dropping the partitioned table will automatically drop
any previously-detached children, which would be unfortunate.
Ashutosh Bapat and Rahila Syed, reviewed by Amit Langote and by me.
Discussion: http://postgr.es/m/CAFjFpRdOwHuGj45i25iLQ4QituA0uH6RuLX1h5deD4KBZJ25yg@mail.gmail.com
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Previously, you could write _null_ in a BKI DATA line for a column that's
supposed to be NOT NULL and initdb would let it pass, probably breaking
subsequent accesses to the row. No doubt the original coding overlooked
this simple sanity check because in the beginning we didn't have any way
to mark catalog columns NOT NULL at initdb time.
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Author: Masahiko Sawada <sawada.mshk@gmail.com>
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Author: Erik Rijkers <er@xs4all.nl>
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This will not have the desired effect and might lead to crashes when the
copied collation is used.
Reported-by: Tom Lane <tgl@sss.pgh.pa.us>
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ExecInitModifyTable() thought there was a plan per partition, but no,
there's only one. The problem had escaped detection so far because there
would only be visible misbehavior if there were a SubPlan (not an InitPlan)
in the quals being duplicated for each partition. However, valgrind
detected a bogus memory access in test cases added by commit 4f7a95be2,
and investigation of that led to discovery of the bug. The additional
test case added here crashes without the patch.
Patch by Amit Langote, test case by me.
Discussion: https://postgr.es/m/10974.1497227727@sss.pgh.pa.us
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During pg_upgrade's restore run, all relfilenode choices should be
overridden by commands in the dump script. If we ever find ourselves
choosing a relfilenode in the ordinary way, someone blew it. Likewise for
pg_type OIDs. Since pg_upgrade might well succeed anyway, if there happens
not to be a conflict during the regression test run, we need assertions
here to keep us on the straight and narrow.
We might someday be able to remove the assertion in GetNewRelFileNode,
if pg_upgrade is rewritten to remove its assumption that old and new
relfilenodes always match. But it's hard to see how to get rid of the
pg_type OID constraint, since those OIDs are embedded in user tables
in some cases.
Back-patch as far as 9.5, because of the risk of back-patches breaking
something here even if it works in HEAD. I'd prefer to go back further,
but 9.4 fails both assertions due to get_rel_infos()'s use of a temporary
table. We can't use the later-branch solution of a CTE for compatibility
reasons (cf commit 5d16332e9), and it doesn't seem worth inventing some
other way to do the query. (I did check, by dint of changing the Asserts
to elog(WARNING), that there are no other cases of unwanted OID assignments
during 9.4's regression test run.)
Discussion: https://postgr.es/m/19785.1497215827@sss.pgh.pa.us
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It's not necessary for it to do that, since OWNED BY requires only ordinary
catalog updates and doesn't affect future sequence values. And pg_upgrade
needs to use OWNED BY without having it change the sequence's relfilenode.
Commit 3d79013b9 broke this by making all forms of ALTER SEQUENCE change
the relfilenode; that seems to be the explanation for the hard-to-reproduce
buildfarm failures we've been seeing since then.
Discussion: https://postgr.es/m/19785.1497215827@sss.pgh.pa.us
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The original code only added ICU_CFLAGS to the backend build. But it is
also needed for building external modules that include pg_locale.h. So
add it to the global CPPFLAGS. (This is only relevant if ICU is not in
a compiler default path, so it apparently hasn't bitten many.)
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It appears to be more confusing than useful.
Reported-by: Jeff Janes <jeff.janes@gmail.com>
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and also any platform that does not have locale_t but enabled ICU.
Author: Ashutosh Sharma <ashu.coek88@gmail.com>
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When a table sync worker is in waiting state and the subscription table
entry is removed because of a concurrent subscription refresh, the
worker could be left orphaned. To avoid that, explicitly stop the
worker when the pg_subscription_rel entry is removed.
Reported-by: Masahiko Sawada <sawada.mshk@gmail.com>
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generateSerialExtraStmts() was sloppy about handling the case where
SEQUENCE NAME is given with a not-schema-qualified name. It was generating
a CreateSeqStmt with an unqualified sequence name, and an AlterSeqStmt
whose "owned_by" DefElem contained a T_String Value with a null string
pointer in the schema-name position. The generated nextval() argument was
also underqualified. This accidentally failed to fail at runtime, but only
so long as the current default creation namespace at runtime is the right
namespace. That's bogus; the parse-time transformation is supposed to be
inserting the right schema name in all cases, so as to avoid any possible
skew in that selection. I'm not sure this could fail in pg_dump's usage,
but it's still wrong; we have had real bugs in this area before adopting
the policy that parse_utilcmd.c should generate only fully-qualified
auxiliary commands. A slightly lesser problem, which is what led me to
notice this in the first place, is that pprint() dumped core on the
AlterSeqStmt because of the bogus T_String.
Noted while poking into the open problem with ALTER SEQUENCE breaking
pg_upgrade.
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The new partitioned table capability added a new relkind, namely
RELKIND_PARTITIONED_TABLE. Update fireRIRrules() to apply RLS
policies on RELKIND_PARTITIONED_TABLE as it does RELKIND_RELATION.
In addition, add RLS regression test coverage for partitioned tables.
Issue raised by Fakhroutdinov Evgenievich and patch by Mike Palmiotto.
Regression test editorializing by me.
Discussion: https://postgr.es/m/flat/20170601065959.1486.69906@wrigleys.postgresql.org
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Author: Neha Khatri <nehakhatri5@gmail.com>
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Author: Masahiko Sawada <sawada.mshk@gmail.com>
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When a table is removed from a subscription before the tablesync worker
could start, this would previously result in an error when reading
pg_subscription_rel. Now we just ignore this.
Author: Masahiko Sawada <sawada.mshk@gmail.com>
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Previously the exit handling was only able to exit from within the
main loop, and not from within the backend code it calls. Fix that by
using the standard die() SIGTERM handler, and adding the necessary
CHECK_FOR_INTERRUPTS() call.
This requires adding yet another process-type-specific branch to
ProcessInterrupts(), which hints that we probably should generalize
that handling. But that's work for another day.
Author: Petr Jelinek
Reviewed-By: Andres Freund
Discussion: https://postgr.es/m/fe072153-babd-3b5d-8052-73527a6eb657@2ndquadrant.com
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Since 7c4f52409a8c (merged in v10), a shutdown master is reported as
FATAL: unexpected result after CommandComplete: server closed the connection unexpectedly
by walsender. It used to be
LOG: replication terminated by primary server
FATAL: could not send end-of-streaming message to primary: no COPY in progress
while the old message clearly is not perfect, it's definitely better
than what's reported now.
The change comes from the attempt to handle finished COPYs without
erroring out, needed for the new logical replication, which wasn't
needed before.
There's probably better ways to handle this, but for now just
explicitly check for a closed connection.
Author: Petr Jelinek
Reviewed-By: Andres Freund
Discussion: https://postgr.es/m/f7c7dd08-855c-e4ed-41f4-d064a6c0665a@2ndquadrant.com
Backpatch: -
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Most of the improvements were in the new SCRAM code:
* In SCRAM protocol violation messages, use errdetail to provide the
details.
* If pg_backend_random() fails, throw an ERROR rather than just LOG. We
shouldn't continue authentication if we can't generate a random nonce.
* Use ereport() rather than elog() for the "invalid SCRAM verifier"
messages. They shouldn't happen, if everything works, but it's not
inconceivable that someone would have invalid scram verifiers in
pg_authid, e.g. if a broken client application was used to generate the
verifier.
But this change applied to old code:
* Use ERROR rather than COMMERROR for protocol violation errors. There's
no reason to not tell the client what they did wrong. The client might be
confused already, so that it cannot read and display the error correctly,
but let's at least try. In the "invalid password packet size" case, we
used to actually continue with authentication anyway, but that is now a
hard error.
Patch by Michael Paquier and me. Thanks to Daniel Varrazzo for spotting
the typo in one of the messages that spurred the discussion and these
larger changes.
Discussion: https://www.postgresql.org/message-id/CA%2Bmi_8aZYLhuyQi1Jo0hO19opNZ2OEATEOM5fKApH7P6zTOZGg%40mail.gmail.com
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