Thomas Munro [Wed, 27 Nov 2024 02:43:18 +0000 (15:43 +1300)]
If a C23 compiler is detected, try asking for C17.
Branches before 16 can't be compiled with a C23 compiler (see
deprecation warnings silenced by commit
f9a56e72, and non-back-patchable
changes made in 16 by commit
1c27d16e). Test __STDC_VERSION__, and if
it's above C17 then try appending -std=gnu17. The test is done with the
user's CFLAGS, so an acceptable language version can also be configured
manually that way.
This is done in branches 15 and older, back to 9.2, per policy of
keeping them buildable with modern tools.
Discussion: https://postgr.es/m/87o72eo9iu.fsf%40gentoo.org
Andrew Dunstan [Wed, 26 Jun 2024 11:01:47 +0000 (07:01 -0400)]
Remove redundant perl version checks
Commit
4c1532763a removed some redundant uses of 'use 5.008001;' in perl
scripts, including in plperl's plc_perlboot.pl. Because it made other
changes it wasn't backpatched. However, now this is causing a failure on
back branches when built with bleeding edge perl. Therefore, backpatch
just that part of it which removed those uses, from 15 all the way down
to 9.2, which is the earliest version currently built in the buildfarm.
per report from Alexander Lakhin
Discussion: https://postgr.es/m/
4cc2ee93-e03c-8e13-61ed-
412e7e6ff19d@gmail.com
Andrew Dunstan [Tue, 5 Feb 2019 20:16:55 +0000 (15:16 -0500)]
Keep perl style checker happy
It doesn't like code before "use strict;".
(cherry picked from commit
ed2c2d063bd110f299211611b72a5dbe07a4d7be)
Andrew Dunstan [Tue, 5 Feb 2019 14:59:46 +0000 (09:59 -0500)]
Fix searchpath for modern Perl for genbki.pl
This was fixed for MSVC tools by commit
1df92eeafefac4, but per
buildfarm member bowerbird genbki.pl needs the same treatment.
Backpatch to all live branches.
(cherry picked from commit
51884fa16a179852ec851172a72588d8e84ec05e)
Tom Lane [Tue, 17 Jan 2023 01:35:53 +0000 (20:35 -0500)]
Create common infrastructure for cross-version upgrade testing.
To test pg_upgrade across major PG versions, we have to be able to
modify or drop any old objects with no-longer-supported properties,
and we have to be able to deal with cosmetic changes in pg_dump output.
Up to now, the buildfarm and pg_upgrade's own test infrastructure had
separate implementations of the former, and we had nothing but very
ad-hoc rules for the latter (including an arbitrary threshold on how
many lines of unchecked diff were okay!). This patch creates a Perl
module that can be shared by both those use-cases, and adds logic
that deals with pg_dump output diffs in a much more tightly defined
fashion.
This largely supersedes previous efforts in commits
0df9641d3,
9814ff550, and
62be9e4cd, which developed a SQL-script-based solution
for the task of dropping old objects. There was nothing fundamentally
wrong with that work in itself, but it had no basis for solving the
output-formatting problem. The most plausible way to deal with
formatting is to build a Perl module that can perform editing on the
dump files; and once we commit to that, it makes more sense for the
same module to also embed the knowledge of what has to be done for
dropping old objects.
Back-patch versions of the helper module as far as 9.2, to
support buildfarm animals that still test that far back.
It's also necessary to back-patch PostgreSQL/Version.pm,
because the new code depends on that. I fixed up pg_upgrade's
002_pg_upgrade.pl in v15, but did not look into back-patching
it further than that.
Tom Lane and Andrew Dunstan
Discussion: https://postgr.es/m/891521.
1673657296@sss.pgh.pa.us
Michael Paquier [Wed, 9 Nov 2022 00:40:06 +0000 (09:40 +0900)]
Fix compilation warnings with libselinux 3.1 in contrib/sepgsql/
Upstream SELinux has recently marked security_context_t as officially
deprecated, causing warnings with -Wdeprecated-declarations. This is
considered as legacy code for some time now by upstream as
security_context_t got removed from most of the code tree during the
development of 2.3 back in 2014.
This removes all the references to security_context_t in sepgsql/ to be
consistent with SELinux, fixing the warnings. Note that this does not
impact the minimum version of libselinux supported.
This has been applied first as
1f32136 for 14~, but no other branches
got the call. This is in line with the recent project policy to have no
warnings in branches where builds should still be supported (9.2~ as of
today). Per discussion with Tom Lane and Álvaro Herrera.
Reviewed-by: Tom Lane
Discussion: https://postgr.es/m/
20200813012735[email protected]
Discussion: https://postgr.es/m/
20221103181028[email protected]
Backpatch-through: 9.2
Tom Lane [Sun, 16 Oct 2022 19:27:04 +0000 (15:27 -0400)]
Rename parser token REF to REF_P to avoid a symbol conflict.
In the latest version of Apple's macOS SDK, <sys/socket.h>
fails to compile if "REF" is #define'd as something.
Apple may or may not agree that this is a bug, and even if
they do accept the bug report I filed, they probably won't
fix it very quickly. In the meantime, our back branches will all
fail to compile gram.y. v15 and HEAD currently escape the problem
thanks to the refactoring done in
98e93a1fc, but that's purely
accidental. Moreover, since that patch removed a widely-visible
inclusion of <netdb.h>, back-patching it seems too likely to break
third-party code.
Instead, change the token's code name to REF_P, following our usual
convention for naming parser tokens that are likely to have symbol
conflicts. The effects of that should be localized to the grammar
and immediately surrounding files, so it seems like a safer answer.
Per project policy that we want to keep recently-out-of-support
branches buildable on modern systems, back-patch all the way to 9.2.
Discussion: https://postgr.es/m/
1803927.
1665938411@sss.pgh.pa.us
Tom Lane [Wed, 21 Sep 2022 19:42:00 +0000 (15:42 -0400)]
Fix configure's AC_CHECK_DECLS tests to work correctly with clang.
Back-port commit
16fbac39f into 9.3 and 9.2, so that these
out-of-support branches can be built with clang without wading
through a pile of warnings about strlcpy and related functions.
check_decls.m4 required some adaptation to work with autoconf 2.63,
but nothing too major.
Discussion: https://postgr.es/m/26819.
1542515567@sss.pgh.pa.us
Discussion: https://postgr.es/m/
1081321.
1663775084@sss.pgh.pa.us
Tom Lane [Wed, 21 Sep 2022 17:52:38 +0000 (13:52 -0400)]
Suppress more variable-set-but-not-used warnings from clang 15.
Mop up assorted set-but-not-used warnings in the back branches.
This includes back-patching relevant fixes from commit
152c9f7b8
the rest of the way, but there are also several cases that did not
appear in HEAD. Some of those we'd fixed in a retail way but not
back-patched, and others I think just got rewritten out of existence
during nearby refactoring.
While here, also back-patch
b1980f6d0 (PL/Tcl: Fix compiler warnings
with Tcl 8.6) into 9.2, so that that branch compiles warning-free
with modern Tcl.
Per project policy, this is a candidate for back-patching into
out-of-support branches: it suppresses annoying compiler warnings
but changes no behavior. Hence, back-patch all the way to 9.2.
Discussion: https://postgr.es/m/514615.
1663615243@sss.pgh.pa.us
Tom Lane [Tue, 20 Sep 2022 22:59:54 +0000 (18:59 -0400)]
Disable -Wdeprecated-non-prototype in the back branches.
There doesn't seem to be any good ABI-preserving way to silence
clang 15's -Wdeprecated-non-prototype warnings about our tree-walk
APIs. While we've fixed it properly in HEAD, the only way to not
see hundreds of these in the back branches is to disable the
warnings. We're not going to do anything about them, so we might
as well disable them.
I noticed that we also get some of these warnings about fmgr.c's
support for V0 function call convention, in branches before v10
where we removed that. That's another area we aren't going to
change, so turning off the warning seems fine for that too.
Per project policy, this is a candidate for back-patching into
out-of-support branches: it suppresses annoying compiler warnings
but changes no behavior. Hence, back-patch all the way to 9.2.
Discussion: https://postgr.es/m/CA+hUKGKpHPDTv67Y+s6yiC8KH5OXeDg6a-twWo_xznKTcG0kSA@mail.gmail.com
Tom Lane [Wed, 1 Jun 2022 20:15:47 +0000 (16:15 -0400)]
Fix pl/perl test case so it will still work under Perl 5.36.
Perl 5.36 has reclassified the warning condition that this test
case used, so that the expected error fails to appear. Tweak
the test so it instead exercises a case that's handled the same
way in all Perl versions of interest.
This appears to meet our standards for back-patching into
out-of-support branches: it changes no user-visible behavior
but enables testing of old branches with newer tools.
Hence, back-patch as far as 9.2.
Dagfinn Ilmari Mannsåker, per report from Jitka Plesníková.
Discussion: https://postgr.es/m/564579.
1654093326@sss.pgh.pa.us
Tom Lane [Sun, 23 Jan 2022 16:09:00 +0000 (11:09 -0500)]
Suppress variable-set-but-not-used warning from clang 13.
In the normal configuration where GEQO_DEBUG isn't defined,
recent clang versions have started to complain that geqo_main.c
accumulates the edge_failures count but never does anything
with it. As a minimal back-patchable fix, insert a void cast
to silence this warning. (I'd speculated about ripping out the
GEQO_DEBUG logic altogether, but I don't think we'd wish to
back-patch that.)
Per recently-established project policy, this is a candidate
for back-patching into out-of-support branches: it suppresses
an annoying compiler warning but changes no behavior. Hence,
back-patch all the way to 9.2.
Discussion: https://postgr.es/m/CA+hUKGLTSZQwES8VNPmWO9AO0wSeLt36OCPDAZTccT1h7Q7kTQ@mail.gmail.com
Andrew Dunstan [Wed, 15 Dec 2021 22:57:10 +0000 (17:57 -0500)]
Make DLSUFFIX easily discoverable by build scripts
This will enable things like the buildfarm client to discover more
reliably if certain libraries have been installed.
Discussion: https://postgr.es/m/
859e7c91-7ef4-d4b4-2ca2-
8046e0cbee09@2ndQuadrant.com
This is a backpatch to 9.3 and 9.2 of commits
b40cb99b85 and
d9cdb1ba9e
now that we are supporting limited builds of older versions.
Tom Lane [Mon, 13 Dec 2021 05:24:38 +0000 (00:24 -0500)]
Fix compiler warning
With some newer gcc versions (8 and 9) you get a -Wformat-overflow
warning here. In PG11 and later this was already fixed. Since it's
trivial, backport it to get the older branches building without
warnings.
This back-patches commit
333a186dc into out-of-support branches,
pursuant to newly-established project policy. The point is to
suppress scary-looking warnings so that people building these
branches needn't expend brain cells verifying that it's safe
to ignore the warnings.
Discussion: https://postgr.es/m/
d0316012-ece7-7b7e-2d36-
9c38cb77cb3b@enterprisedb.com
Tom Lane [Mon, 13 Dec 2021 05:08:33 +0000 (00:08 -0500)]
Silence another gcc 11 warning.
Per buildfarm and local experimentation, bleeding-edge gcc isn't
convinced that the MemSet in reorder_function_arguments() is safe.
Shut it up by adding an explicit check that pronargs isn't negative,
and by changing MemSet to memset. (It appears that either change is
enough to quiet the warning at -O2, but let's do both to be sure.)
This back-patches commit
1046dbedd into out-of-support branches,
pursuant to newly-established project policy. The point is to
suppress scary-looking warnings so that people building these
branches needn't expend brain cells verifying that it's safe
to ignore the warnings.
Discussion: https://postgr.es/m/
d0316012-ece7-7b7e-2d36-
9c38cb77cb3b@enterprisedb.com
Tom Lane [Mon, 13 Dec 2021 01:24:50 +0000 (20:24 -0500)]
Suppress -Warray-parameter warnings in pgcrypto/sha2.c.
This is exactly the same problem as commit
1b242f42b fixed in ecpg,
but in contrib/pgcrypto. Commit
273c458a2 eliminated the problem
here for v10 and up. We hadn't noticed for exactly the same reasons
enumerated in
bbbf22cf3.
Back-patch down to 9.2, pursuant to newly-established project policy
about keeping out-of-support branches buildable.
Discussion: https://postgr.es/m/
d0316012-ece7-7b7e-2d36-
9c38cb77cb3b@enterprisedb.com
Tom Lane [Mon, 13 Dec 2021 00:12:23 +0000 (19:12 -0500)]
Reformat imath.c macro to remove -Wmisleading-indentation warnings.
Recent versions of gcc whine about the admittedly-completely-illegible
formatting of this macro. We've not noticed for a few reasons:
* In v12 and up, the problem is gone thanks to
48e24ba6b.
(Back-patching that doesn't seem prudent, though, so this patch
just manually improves the macro's formatting.)
* Buildfarm animals that might have complained, such as caiman,
do not because they use --with-openssl and so don't build imath.c.
* In a manual run such as "make all check-world", you won't see the
warning because it gets buried in an install.log file. You have to
do "make -C contrib all" or the like to see it.
I noticed this because in older branches, the last bit doesn't
happen so "check-world" actually does spew the warnings to stderr.
Maybe we should rethink how that works, because the newer behavior
is not an improvement IMO.
Back-patch down to 9.2, pursuant to newly-established project policy
about keeping out-of-support branches buildable.
Discussion: https://postgr.es/m/
d0316012-ece7-7b7e-2d36-
9c38cb77cb3b@enterprisedb.com
Tom Lane [Sun, 12 Dec 2021 23:06:11 +0000 (18:06 -0500)]
Clean up compilation warnings coming from PL/Perl with clang-12~
clang-12 has introduced -Wcompound-token-split-by-macro, that is causing
a large amount of warnings when building PL/Perl because of its
interactions with upstream Perl. This commit adds one -Wno to CFLAGS at
./configure time if the flag is supported by the compiler to silence all
those warnings.
This back-patches commit
9ff47ea41 into out-of-support branches,
pursuant to newly-established project policy. The point is to
suppress scary-looking warnings so that people building these
branches needn't expend brain cells verifying that it's safe
to ignore the warnings.
Discussion: https://postgr.es/m/
d0316012-ece7-7b7e-2d36-
9c38cb77cb3b@enterprisedb.com
Tom Lane [Sun, 12 Dec 2021 21:59:17 +0000 (16:59 -0500)]
Make ecpg's rjulmdy() and rmdyjul() agree with their declarations.
We had "short *mdy" in the extern declarations, but "short mdy[3]"
in the actual function definitions. Per C99 these are equivalent,
but recent versions of gcc have started to issue warnings about
the inconsistency. Clean it up before the warnings get any more
widespread.
This back-patches commit
1b242f42b into out-of-support branches,
pursuant to newly-established project policy. The point is to
suppress scary-looking warnings so that people building these
branches needn't expend brain cells verifying that it's safe
to ignore the warnings.
Discussion: https://postgr.es/m/
d0316012-ece7-7b7e-2d36-
9c38cb77cb3b@enterprisedb.com
Tom Lane [Sun, 12 Dec 2021 21:14:22 +0000 (16:14 -0500)]
Make pg_upgrade's test.sh less chatty.
Remove "set -x", and pass "-A trust" to initdb explicitly,
to suppress almost all of the noise this script used to emit
on stderr.
This back-patches commit
eb9812f27 into out-of-support branches,
pursuant to newly-established project policy. The point is to
suppress useless noise on stderr when running check-world.
Discussion: https://postgr.es/m/
d0316012-ece7-7b7e-2d36-
9c38cb77cb3b@enterprisedb.com
Tom Lane [Sun, 12 Dec 2021 20:58:57 +0000 (15:58 -0500)]
Add checks for valid multibyte character length in UtfToLocal, LocalToUtf.
This back-patches commit
d9f37e666 into out-of-support branches,
pursuant to newly-established project policy. The point is to
suppress "uninitialized variable" warnings so that people building
these branches needn't expend brain cells verifying that it's safe
to ignore the warnings.
Discussion: https://postgr.es/m/
d0316012-ece7-7b7e-2d36-
9c38cb77cb3b@enterprisedb.com
Tom Lane [Sun, 12 Dec 2021 19:54:32 +0000 (14:54 -0500)]
Use return instead of exit() in configure
Using exit() requires stdlib.h, which is not included. Use return
instead. Also add return type for main().
This back-patches commit
1c0cf52b3 into out-of-support branches,
pursuant to a newly-established project policy that we'll try to keep
out-of-support branches buildable on modern platforms for at least
ten major releases back, ensuring people can test pg_dump and psql
compatibility against servers that far back. With the current
development branch being v15, that works out to keeping 9.2 and up
buildable as of today.
This fix is needed to get through 'configure' when using recent
macOS (and possibly other clang-based toolchains). It seems to
be sufficient to get through 'check-world', although there are
annoyances such as compiler warnings, which will be dealt with
separately.
Original patch by Peter Eisentraut
Discussion: https://postgr.es/m/
d0316012-ece7-7b7e-2d36-
9c38cb77cb3b@enterprisedb.com
Tom Lane [Mon, 5 Nov 2018 21:53:28 +0000 (16:53 -0500)]
Stamp 9.3.25.
Peter Eisentraut [Mon, 5 Nov 2018 14:13:49 +0000 (15:13 +0100)]
Translation updates
Source-Git-URL: https://git.postgresql.org/git/pgtranslation/messages.git
Source-Git-Hash:
8e48d753b142594b95b0e149ce0cd5b3317a42cc
Tom Lane [Sun, 4 Nov 2018 21:57:15 +0000 (16:57 -0500)]
Release notes for 11.1, 10.6, 9.6.11, 9.5.15, 9.4.20, 9.3.25.
Tom Lane [Sat, 3 Nov 2018 17:56:10 +0000 (13:56 -0400)]
Make ts_locale.c's character-type functions cope with UTF-16.
On Windows, in UTF8 database encoding, what char2wchar() produces is
UTF16 not UTF32, ie, characters above U+FFFF will be represented by
surrogate pairs. t_isdigit() and siblings did not account for this
and failed to provide a large enough result buffer. That in turn
led to bogus "invalid multibyte character for locale" errors, because
contrary to what you might think from char2wchar()'s documentation,
its Windows code path doesn't cope sanely with buffer overflow.
The solution for t_isdigit() and siblings is pretty clear: provide
a 3-wchar_t result buffer not 2.
char2wchar() also needs some work to provide more consistent, and more
accurately documented, buffer overrun behavior. But that's a bigger job
and it doesn't actually have any immediate payoff, so leave it for later.
Per bug #15476 from Kenji Uno, who deserves credit for identifying the
cause of the problem. Back-patch to all active branches.
Discussion: https://postgr.es/m/15476-
4314f480acf0f114@postgresql.org
Tom Lane [Fri, 2 Nov 2018 22:54:00 +0000 (18:54 -0400)]
Yet further rethinking of build changes for macOS Mojave.
The solution arrived at in commit
e74dd00f5 presumes that the compiler
has a suitable default -isysroot setting ... but further experience
shows that in many combinations of macOS version, XCode version, Xcode
command line tools version, and phase of the moon, Apple's compiler
will *not* supply a default -isysroot value.
We could potentially go back to the approach used in commit
68fc227dd,
but I don't have a lot of faith in the reliability or life expectancy of
that either. Let's just revert to the approach already shipped in 11.0,
namely specifying an -isysroot switch globally. As a partial response to
the concerns raised by Jakob Egger, adjust the contents of Makefile.global
to look like
CPPFLAGS = -isysroot $(PG_SYSROOT) ...
PG_SYSROOT = /path/to/sysroot
This allows overriding the sysroot path at build time in a relatively
painless way.
Add documentation to installation.sgml about how to use the PG_SYSROOT
option. I also took the opportunity to document how to work around
macOS's "System Integrity Protection" feature.
As before, back-patch to all supported versions.
Discussion: https://postgr.es/m/20840.
1537850987@sss.pgh.pa.us
Bruce Momjian [Fri, 2 Nov 2018 17:05:30 +0000 (13:05 -0400)]
docs: adjust simpler language for NULL return from ANY/ALL
Adjustment to commit
8610c973ddf1cbf0befc1369d2cf0d56c0efcd0a.
Reported-by: Tom Lane
Discussion: https://postgr.es/m/17406.
1541168421@sss.pgh.pa.us
Backpatch-through: 9.3
Bruce Momjian [Fri, 2 Nov 2018 13:10:59 +0000 (09:10 -0400)]
GUC: adjust effective_cache_size docs and SQL description
Clarify that effective_cache_size is both kernel buffers and shared
buffers.
Reported-by: [email protected]
Discussion: https://postgr.es/m/
153685164808.22334.
15432535018443165207@wrigleys.postgresql.org
Backpatch-through: 9.3
Bruce Momjian [Fri, 2 Nov 2018 12:54:33 +0000 (08:54 -0400)]
doc: use simpler language for NULL return from ANY/ALL
Previously the combination of "does not return" and "any row" caused
ambiguity.
Reported-by: KES <[email protected]>
Discussion: https://postgr.es/m/
153701242703.22334.
1476830122267077397@wrigleys.postgresql.org
Reviewed-by: David G. Johnston
Backpatch-through: 9.3
Tom Lane [Wed, 31 Oct 2018 21:04:43 +0000 (17:04 -0400)]
Fix memory leak in repeated SPGIST index scans.
spgendscan neglected to pfree all the memory allocated by spgbeginscan.
It's possible to get away with that in most normal queries, since the
memory is allocated in the executor's per-query context which is about
to get deleted anyway; but it causes severe memory leakage during
creation or filling of large exclusion-constraint indexes.
Also, document that amendscan is supposed to free what ambeginscan
allocates. The docs' lack of clarity on that point probably caused this
bug to begin with. (There is discussion of changing that API spec going
forward, but I don't think it'd be appropriate for the back branches.)
Per report from Bruno Wolff. It's been like this since the beginning,
so back-patch to all active branches.
In HEAD, also fix an independent leak caused by commit
2a6368343
(allocating memory during spgrescan instead of spgbeginscan, which
might be all right if it got cleaned up, but it didn't). And do a bit
of code beautification on that commit, too.
Discussion: https://postgr.es/m/
20181024012314[email protected]
Tom Lane [Wed, 31 Oct 2018 13:47:53 +0000 (09:47 -0400)]
Sync our copy of the timezone library with IANA release tzcode2018g.
This patch absorbs an upstream fix to "zic" for a recently-introduced
bug that made it output data that some 32-bit clients couldn't read.
Given the current source data, the bug only manifests in zones with
leap seconds, which we don't generate, so that there's no actual
change in our installed timezone data files from this. Still, in
case somebody uses our copy of "zic" to do something else, it seems
best to apply the fix promptly.
Also, update the README's notes about converting upstream code to
our conventions.
Tom Lane [Wed, 31 Oct 2018 12:35:50 +0000 (08:35 -0400)]
Update time zone data files to tzdata release 2018g.
DST law changes in Morocco (with, effectively, zero notice).
Historical corrections for Hawaii.
Magnus Hagander [Mon, 29 Oct 2018 11:34:49 +0000 (12:34 +0100)]
Fix missing whitespace in pg_dump ref page
Author: Daniel Gustafsson <
[email protected]>
Andrew Dunstan [Sun, 28 Oct 2018 16:22:32 +0000 (12:22 -0400)]
Fix perl searchpath for modern perl for MSVC tools
Modern versions of perl no longer include the current directory in the
perl searchpath, as it's insecure. Instead of adding the current
directory, we get around the problem by adding the directory where the
script lives.
Problem noted by Victor Wagner.
Solution adapted from buildfarm client code.
Backpatch to all live versions.
Tom Lane [Fri, 19 Oct 2018 23:36:34 +0000 (19:36 -0400)]
Sync our copy of the timezone library with IANA release tzcode2018f.
About half of this is purely cosmetic changes to reduce the diff between
our code and theirs, like inserting "const" markers where they have them.
The other half is tracking actual code changes in zic.c and localtime.c.
I don't think any of these represent near-term compatibility hazards, but
it seems best to stay up to date.
I also fixed longstanding bugs in our code for producing the
known_abbrevs.txt list, which by chance hadn't been exposed before,
but which resulted in some garbage output after applying the upstream
changes in zic.c. Notably, because upstream removed their old phony
transitions at the Big Bang, it's now necessary to cope with TZif files
containing no DST transition times at all.
Tom Lane [Fri, 19 Oct 2018 21:01:34 +0000 (17:01 -0400)]
Update time zone data files to tzdata release 2018f.
DST law changes in Chile, Fiji, and Russia (Volgograd).
Historical corrections for China, Japan, Macau, and North Korea.
Note: like the previous tzdata update, this involves a depressingly
large amount of semantically-meaningless churn in tzdata.zi. That
is a consequence of upstream's data compression method assigning
unstable abbreviations to DST rulesets. I complained about that
to them last time, and this version now uses an assignment method
that pays some heed to not changing abbreviations unnecessarily.
So hopefully, that'll be better going forward.
Tom Lane [Thu, 18 Oct 2018 18:55:23 +0000 (14:55 -0400)]
Still further rethinking of build changes for macOS Mojave.
To avoid the sorts of problems complained of by Jakob Egger, it'd be
best if configure didn't emit any references to the sysroot path at all.
In the case of PL/Tcl, we can do that just by keeping our hands off the
TCL_INCLUDE_SPEC string altogether. In the case of PL/Perl, we need to
substitute -iwithsysroot for -I in the compile commands, which is easily
handled if we change to using a configure output variable that includes
the switch not only the directory name. Since PL/Tcl and PL/Python
already do it like that, this seems like good consistency cleanup anyway.
Hence, this replaces the advice given to Perl-related extensions in commit
5e2217131; instead of writing "-I$(perl_archlibexp)/CORE", they should
just write "$(perl_includespec)". (The old way continues to work, but not
on recent macOS.)
It's still the case that configure needs to be aware of the sysroot
path internally, but that's cleaner than what we had before.
As before, back-patch to all supported versions.
Discussion: https://postgr.es/m/20840.
1537850987@sss.pgh.pa.us
Tom Lane [Wed, 17 Oct 2018 19:06:38 +0000 (15:06 -0400)]
Fix minor bug in isolationtester.
If the lock wait query failed, isolationtester would report the
PQerrorMessage from some other connection, meaning there would be
no message or an unrelated one. This seems like a pretty unlikely
occurrence, but if it did happen, this bug could make it really
difficult/confusing to figure out what happened. That seems to
justify patching all the way back.
In passing, clean up another place where the "wrong" conn was used
for an error report. That one's not actually buggy because it's
a different alias for the same connection, but it's still confusing
to the reader.
Tom Lane [Wed, 17 Oct 2018 16:26:48 +0000 (12:26 -0400)]
Improve tzparse's handling of TZDEFRULES ("posixrules") zone data.
In the IANA timezone code, tzparse() always tries to load the zone
file named by TZDEFRULES ("posixrules"). Previously, we'd hacked
that logic to skip the load in the "lastditch" code path, which we use
only to initialize the default "GMT" zone during GUC initialization.
That's critical for a couple of reasons: since we do not support leap
seconds, we *must not* allow "GMT" to have leap seconds, and since this
case runs before the GUC subsystem is fully alive, we'd really rather
not take the risk of pg_open_tzfile throwing any errors.
However, that still left the code reading TZDEFRULES on every other
call, something we'd noticed to the extent of having added code to cache
the result so it was only done once per process not a lot of times.
Andres Freund complained about the static data space used up for the
cache; but as long as the logic was like this, there was no point in
trying to get rid of that space.
We can improve matters by looking a bit more closely at what the IANA
code actually needs the TZDEFRULES data for. One thing it does is
that if "posixrules" is a leap-second-aware zone, the leap-second
behavior will be absorbed into every POSIX-style zone specification.
However, that's a behavior we'd really prefer to do without, since
for our purposes the end effect is to render every POSIX-style zone
name unsupported. Otherwise, the TZDEFRULES data is used only if
the POSIX zone name specifies DST but doesn't include a transition
date rule (e.g., "EST5EDT" rather than "EST5EDT,M3.2.0,M11.1.0").
That is a minority case for our purposes --- in particular, it
never happens when tzload() invokes tzparse() to interpret a
transition date rule string found in a tzdata zone file.
Hence, if we legislate that we're going to ignore leap-second data
from "posixrules", we can postpone the TZDEFRULES load into the path
where we actually need to substitute for a missing date rule string.
That means it will never happen at all in common scenarios, making it
reasonable to dynamically allocate the cache space when it does happen.
Even when the data is already loaded, this saves some cycles in the
common code path since we avoid a memcpy of 23KB or so. And, IMO at
least, this is a less ugly hack on the IANA logic than what we had
before, since it's not messing with the lastditch-vs-regular code paths.
Back-patch to all supported branches, not so much because this is a
critical change as that I want to keep all our copies of the IANA
timezone code in sync.
Discussion: https://postgr.es/m/
20181015200754[email protected]
Tom Lane [Tue, 16 Oct 2018 20:27:15 +0000 (16:27 -0400)]
Back off using -isysroot on Darwin.
Rethink the solution applied in commit
5e2217131 to get PL/Tcl to
build on macOS Mojave. I feared that adding -isysroot globally might
have undesirable consequences, and sure enough Jakob Egger reported
one: it complicates building extensions with a different Xcode version
than was used for the core server. (I find that a risky proposition
in general, but apparently it works most of the time, so we shouldn't
break it if we don't have to.)
We'd already adopted the solution for PL/Perl of inserting the sysroot
path directly into the -I switches used to find Perl's headers, and we
can do the same thing for PL/Tcl by changing the -iwithsysroot switch
that Apple's tclConfig.sh reports. This restricts the risks to PL/Perl
and PL/Tcl themselves and directly-dependent extensions, which is a lot
more pleasing in general than a global -isysroot switch.
Along the way, tighten the test to see if we need to inject the sysroot
path into $perl_includedir, as I'd speculated about upthread but not
gotten round to doing.
As before, back-patch to all supported versions.
Discussion: https://postgr.es/m/20840.
1537850987@sss.pgh.pa.us
Tom Lane [Tue, 16 Oct 2018 17:56:58 +0000 (13:56 -0400)]
Avoid rare race condition in privileges.sql regression test.
We created a temp table, then switched to a new session, leaving
the old session to clean up its temp objects in background. If that
took long enough, the eventual attempt to drop the user that owns
the temp table could fail, as exhibited today by sidewinder.
Fix by dropping the temp table explicitly when we're done with it.
It's been like this for quite some time, so back-patch to all
supported branches.
Report: https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=sidewinder&dt=2018-10-16%2014%3A45%3A00
Tom Lane [Tue, 16 Oct 2018 15:50:19 +0000 (11:50 -0400)]
Avoid statically allocating gmtsub()'s timezone workspace.
localtime.c's "struct state" is a rather large object, ~23KB. We were
statically allocating one for gmtsub() to use to represent the GMT
timezone, even though that function is not at all heavily used and is
never reached in most backends. Let's malloc it on-demand, instead.
This does pose the question of how to handle a malloc failure, but
there's already a well-defined error report convention here, ie
set errno and return NULL.
We have but one caller of pg_gmtime in HEAD, and two in back branches,
neither of which were troubling to check for error. Make them do so.
The possible errors are sufficiently unlikely (out-of-range timestamp,
and now malloc failure) that I think elog() is adequate.
Back-patch to all supported branches to keep our copies of the IANA
timezone code in sync. This particular change is in a stanza that
already differs from upstream, so it's a wash for maintenance purposes
--- but only as long as we keep the branches the same.
Discussion: https://postgr.es/m/
20181015200754[email protected]
Tom Lane [Mon, 15 Oct 2018 18:01:38 +0000 (14:01 -0400)]
Check for stack overrun in standard_ProcessUtility().
ProcessUtility can recurse, and indeed can be driven to infinite
recursion, so it ought to have a check_stack_depth() call. This
covers the reported bug (portal trying to execute itself) and a bunch
of other cases that could perhaps arise somewhere.
Per bug #15428 from Malthe Borch. Back-patch to all supported branches.
Discussion: https://postgr.es/m/15428-
b3c2915ec470b033@postgresql.org
Michael Paquier [Sun, 14 Oct 2018 13:24:01 +0000 (22:24 +0900)]
Avoid duplicate XIDs at recovery when building initial snapshot
On a primary, sets of XLOG_RUNNING_XACTS records are generated on a
periodic basis to allow recovery to build the initial state of
transactions for a hot standby. The set of transaction IDs is created
by scanning all the entries in ProcArray. However it happens that its
logic never counted on the fact that two-phase transactions finishing to
prepare can put ProcArray in a state where there are two entries with
the same transaction ID, one for the initial transaction which gets
cleared when prepare finishes, and a second, dummy, entry to track that
the transaction is still running after prepare finishes. This way
ensures a continuous presence of the transaction so as callers of for
example TransactionIdIsInProgress() are always able to see it as alive.
So, if a XLOG_RUNNING_XACTS takes a standby snapshot while a two-phase
transaction finishes to prepare, the record can finish with duplicated
XIDs, which is a state expected by design. If this record gets applied
on a standby to initial its recovery state, then it would simply fail,
so the odds of facing this failure are very low in practice. It would
be tempting to change the generation of XLOG_RUNNING_XACTS so as
duplicates are removed on the source, but this requires to hold on
ProcArrayLock for longer and this would impact all workloads,
particularly those using heavily two-phase transactions.
XLOG_RUNNING_XACTS is also actually used only to initialize the standby
state at recovery, so instead the solution is taken to discard
duplicates when applying the initial snapshot.
Diagnosed-by: Konstantin Knizhnik
Author: Michael Paquier
Discussion: https://postgr.es/m/
0c96b653-4696-d4b4-6b5d-
78143175d113@postgrespro.ru
Backpatch-through: 9.3
Tom Lane [Fri, 12 Oct 2018 23:33:57 +0000 (19:33 -0400)]
Remove abstime, reltime, tinterval tables from old regression databases.
In the back branches, drop these tables after the regression tests are
done with them. This fixes failures of cross-branch pg_upgrade testing
caused by these types having been removed in v12. We do lose the ability
to test dump/restore behavior with these types in the back branches, but
the actual loss of code coverage seems to be nil given that there's nothing
very special about these types.
Discussion: https://postgr.es/m/
20181009192237[email protected]
Tom Lane [Fri, 12 Oct 2018 18:49:33 +0000 (14:49 -0400)]
Back-patch addition of the ALLOCSET_FOO_SIZES macros.
These macros were originally added in commit
ea268cdc9, and back-patched
into 9.6 before 9.6.0. However, some extensions would like to use them
in older branches, and there seems no harm in providing them. So add
them to all supported branches. Per suggestions from Christoph Berg and
Andres Freund.
Discussion: https://postgr.es/m/
20181012170355[email protected]
Tom Lane [Fri, 5 Oct 2018 20:01:30 +0000 (16:01 -0400)]
Allow btree comparison functions to return INT_MIN.
Historically we forbade datatype-specific comparison functions from
returning INT_MIN, so that it would be safe to invert the sort order
just by negating the comparison result. However, this was never
really safe for comparison functions that directly return the result
of memcmp(), strcmp(), etc, as POSIX doesn't place any such restriction
on those library functions. Buildfarm results show that at least on
recent Linux on s390x, memcmp() actually does return INT_MIN sometimes,
causing sort failures.
The agreed-on answer is to remove this restriction and fix relevant
call sites to not make such an assumption; code such as "res = -res"
should be replaced by "INVERT_COMPARE_RESULT(res)". The same is needed
in a few places that just directly negated the result of memcmp or
strcmp.
To help find places having this problem, I've also added a compile option
to nbtcompare.c that causes some of the commonly used comparators to
return INT_MIN/INT_MAX instead of their usual -1/+1. It'd likely be
a good idea to have at least one buildfarm member running with
"-DSTRESS_SORT_INT_MIN". That's far from a complete test of course,
but it should help to prevent fresh introductions of such bugs.
This is a longstanding portability hazard, so back-patch to all supported
branches.
Discussion: https://postgr.es/m/
20180928185215[email protected]
Tom Lane [Tue, 2 Oct 2018 16:41:28 +0000 (12:41 -0400)]
Set snprintf.c's maximum number of NL arguments to be 31.
Previously, we used the platform's NL_ARGMAX if any, otherwise 16.
The trouble with this is that the platform value is hugely variable,
ranging from the POSIX-minimum 9 to as much as 64K on recent FreeBSD.
Values of more than a dozen or two have no practical use and slow down
the initialization of the argtypes array. Worse, they cause snprintf.c
to consume far more stack space than was the design intention, possibly
resulting in stack-overflow crashes.
Standardize on 31, which is comfortably more than we need (it looks like
no existing translatable message has more than about 10 parameters).
I chose that, not 32, to make the array sizes powers of 2, for some
possible small gain in speed of the memset.
The lack of reported crashes suggests that the set of platforms we
use snprintf.c on (in released branches) may have no overlap with
the set where NL_ARGMAX has unreasonably large values. But that's
not entirely clear, so back-patch to all supported branches.
Per report from Mateusz Guzik (via Thomas Munro).
Discussion: https://postgr.es/m/CAEepm=3VF=PUp2f8gU8fgZB22yPE_KBS0+e1AHAtQ=09schTHg@mail.gmail.com
Tom Lane [Tue, 2 Oct 2018 15:54:13 +0000 (11:54 -0400)]
Fix corner-case failures in has_foo_privilege() family of functions.
The variants of these functions that take numeric inputs (OIDs or
column numbers) are supposed to return NULL rather than failing
on bad input; this rule reduces problems with snapshot skew when
queries apply the functions to all rows of a catalog.
has_column_privilege() had careless handling of the case where the
table OID didn't exist. You might get something like this:
select has_column_privilege(9999,'nosuchcol','select');
ERROR: column "nosuchcol" of relation "(null)" does not exist
or you might get a crash, depending on the platform's printf's response
to a null string pointer.
In addition, while applying the column-number variant to a dropped
column returned NULL as desired, applying the column-name variant
did not:
select has_column_privilege('mytable','........pg.dropped.2........','select');
ERROR: column "........pg.dropped.2........" of relation "mytable" does not exist
It seems better to make this case return NULL as well.
Also, the OID-accepting variants of has_foreign_data_wrapper_privilege,
has_server_privilege, and has_tablespace_privilege didn't follow the
principle of returning NULL for nonexistent OIDs. Superusers got TRUE,
everybody else got an error.
Per investigation of Jaime Casanova's report of a new crash in HEAD.
These behaviors have been like this for a long time, so back-patch to
all supported branches.
Patch by me; thanks to Stephen Frost for discussion and review
Discussion: https://postgr.es/m/CAJGNTeP=-6Gyqq5TN9OvYEydi7Fv1oGyYj650LGTnW44oAzYCg@mail.gmail.com
Michael Paquier [Tue, 2 Oct 2018 07:37:16 +0000 (16:37 +0900)]
Fix documentation of pgrowlocks using "lock_type" instead of "modes"
The example used in the documentation is outdated as well. This is an
oversight from
0ac5ad5, which bumped up pgrowlocks but forgot some bits
of the documentation.
Reported-by: Chris Wilson
Discussion: https://postgr.es/m/
153838692816.2950.
12001142346234155699@wrigleys.postgresql.org
Backpatch-through: 9.3
Tom Lane [Mon, 1 Oct 2018 15:42:12 +0000 (11:42 -0400)]
Lock relation used to generate fresh data for RMV.
Back-patch the 9.4-era commit
2636ecf78 into 9.3, as that fixes a case
where we open a relation while not holding any lock on it. It's
probably mostly safe anyway, since no other session could touch the
newly-created table; but I think CheckTableNotInUse could be fooled
if one tried.
Per testing with a patch that complains if we open a relation without
holding any lock on it. I don't plan to back-patch that patch, but we
should close the holes it identifies in all supported branches.
Discussion: https://postgr.es/m/2038.
1538335244@sss.pgh.pa.us
Tom Lane [Mon, 1 Oct 2018 15:39:14 +0000 (11:39 -0400)]
Fix ALTER COLUMN TYPE to not open a relation without any lock.
If the column being modified is referenced by a foreign key constraint
of another table, ALTER TABLE would open the other table (to re-parse
the constraint's definition) without having first obtained a lock on it.
This was evidently intentional, but that doesn't mean it's really safe.
It's especially not safe in 9.3, which pre-dates use of MVCC scans for
catalog reads, but even in current releases it doesn't seem like a good
idea.
We know we'll need AccessExclusiveLock shortly to drop the obsoleted
constraint, so just get that a little sooner to close the hole.
Per testing with a patch that complains if we open a relation without
holding any lock on it. I don't plan to back-patch that patch, but we
should close the holes it identifies in all supported branches.
Discussion: https://postgr.es/m/2038.
1538335244@sss.pgh.pa.us
Tom Lane [Sun, 30 Sep 2018 20:24:56 +0000 (16:24 -0400)]
Fix detection of the result type of strerror_r().
The method we've traditionally used, of redeclaring strerror_r() to
see if the compiler complains of inconsistent declarations, turns out
not to work reliably because some compilers only report a warning,
not an error. Amazingly, this has gone undetected for years, even
though it certainly breaks our detection of whether strerror_r
succeeded.
Let's instead test whether the compiler will take the result of
strerror_r() as a switch() argument. It's possible this won't
work universally either, but it's the best idea I could come up with
on the spur of the moment.
Back-patch of commit
751f532b9. Buildfarm results indicate that only
icc-on-Linux actually has an issue here; perhaps the lack of field
reports indicates that people don't build PG for production that way.
Discussion: https://postgr.es/m/10877.
1537993279@sss.pgh.pa.us
Peter Eisentraut [Fri, 15 Jun 2018 03:22:14 +0000 (23:22 -0400)]
Recurse to sequences on ownership change for all relkinds
When a table ownership is changed, we must apply that also to any owned
sequences. (Otherwise, it would result in a situation that cannot be
restored, because linked sequences must have the same owner as the
table.) But this was previously only applied to regular tables and
materialized views. But it should also apply to at least foreign
tables. This patch removes the relkind check altogether, because it
doesn't save very much and just introduces the possibility of similar
omissions.
Bug: #15238
Reported-by: Christoph Berg <[email protected]>
Tom Lane [Tue, 25 Sep 2018 17:23:29 +0000 (13:23 -0400)]
Make some fixes to allow building Postgres on macOS 10.14 ("Mojave").
Apple's latest rearrangements of the system-supplied headers have broken
building of PL/Perl and PL/Tcl. The only practical way to fix PL/Tcl is to
start using the "-isysroot" compiler flag to point to SDK-supplied headers,
as Apple expects. We must also start distinguishing where to find Perl's
headers from where to find its shared library; but that seems like good
cleanup anyway.
Extensions that formerly did something like -I$(perl_archlibexp)/CORE
should now do -I$(perl_includedir)/CORE instead. perl_archlibexp
is still the place to look for libperl.so, though.
If for some reason you don't like the default -isysroot setting, you can
override that by setting PG_SYSROOT in configure's arguments. I don't
currently think people would need to do so, unless maybe for cross-version
build purposes.
In addition, teach configure where to find tclConfig.sh. Our traditional
method of searching $auto_path hasn't worked for the last couple of macOS
releases, and it now seems clear that Apple's not going to change that.
The workaround of manually specifying --with-tclconfig was annoying
already, but Mojave's made it a lot more so because the sysroot path now
has to be included as well. Let's just wire the knowledge into configure
instead. To avoid breaking builds against non-default Tcl installations
(e.g. MacPorts) wherein the $auto_path method probably still works,
arrange to try the additional case only after all else has failed.
Back-patch to all supported versions, since at least the buildfarm
cares about that. The changes are set up to not do anything on macOS
releases that are old enough to not have functional sysroot trees.
Tom Lane [Mon, 24 Sep 2018 15:30:51 +0000 (11:30 -0400)]
Fix over-allocation of space for array_out()'s result string.
array_out overestimated the space needed for its output, possibly by
a very substantial amount if the array is multi-dimensional, because
of wrong order of operations in the loop that counts the number of
curly-brace pairs needed. While the output string is normally
short-lived, this could still cause problems in extreme cases.
An additional minor error was that it counted one more delimiter than
is actually needed.
Repair those errors, add an Assert that the space is now correctly
calculated, and make some minor improvements in the comments.
I also failed to resist the temptation to get rid of an integer
modulus operation per array element; a simple comparison is sufficient.
This bug dates clear back to Berkeley days, so back-patch to all
supported versions.
Keiichi Hirobe, minor additional work by me
Discussion: https://postgr.es/m/CAH=EFxE9W0tRvQkixR2XJRRCToUYUEDkJZk6tnADXugPBRdcdg@mail.gmail.com
Noah Misch [Mon, 24 Sep 2018 05:56:39 +0000 (22:56 -0700)]
Initialize random() in bootstrap/stand-alone postgres and in initdb.
This removes a difference between the standard IsUnderPostmaster
execution environment and that of --boot and --single. In a stand-alone
backend, "SELECT random()" always started at the same seed.
On a system capable of using posix shared memory, initdb could still
conclude "selecting dynamic shared memory implementation ... sysv".
Crashed --boot or --single postgres processes orphaned shared memory
objects having names that collided with the not-actually-random names
that initdb probed. The sysv fallback appeared after ten crashes of
--boot or --single postgres. Since --boot and --single are rare in
production use, systems used for PostgreSQL development are the
principal candidate to notice this symptom.
Back-patch to 9.3 (all supported versions). PostgreSQL 9.4 introduced
dynamic shared memory, but 9.3 does share the "SELECT random()" problem.
Reviewed by Tom Lane and Kyotaro HORIGUCHI.
Discussion: https://postgr.es/m/
20180915221546[email protected]
Tom Lane [Sun, 23 Sep 2018 20:05:46 +0000 (16:05 -0400)]
Fix failure in WHERE CURRENT OF after rewinding the referenced cursor.
In a case where we have multiple relation-scan nodes in a cursor plan,
such as a scan of an inheritance tree, it's possible to fetch from a
given scan node, then rewind the cursor and fetch some row from an
earlier scan node. In such a case, execCurrent.c mistakenly thought
that the later scan node was still active, because ExecReScan hadn't
done anything to make it look not-active. We'd get some sort of
failure in the case of a SeqScan node, because the node's scan tuple
slot would be pointing at a HeapTuple whose t_self gets reset to
invalid by heapam.c. But it seems possible that for other relation
scan node types we'd actually return a valid tuple TID to the caller,
resulting in updating or deleting a tuple that shouldn't have been
considered current. To fix, forcibly clear the ScanTupleSlot in
ExecScanReScan.
Another issue here, which seems only latent at the moment but could
easily become a live bug in future, is that rewinding a cursor does
not necessarily lead to *immediately* applying ExecReScan to every
scan-level node in the plan tree. Upper-level nodes will think that
they can postpone that call if their child node is already marked
with chgParam flags. I don't see a way for that to happen today in
a plan tree that's simple enough for execCurrent.c's search_plan_tree
to understand, but that's one heck of a fragile assumption. So, add
some logic in search_plan_tree to detect chgParam flags being set on
nodes that it descended to/through, and assume that that means we
should consider lower scan nodes to be logically reset even if their
ReScan call hasn't actually happened yet.
Per bug #15395 from Matvey Arye. This has been broken for a long time,
so back-patch to all supported branches.
Discussion: https://postgr.es/m/
153764171023.14986.
280404050547008575@wrigleys.postgresql.org
Bruce Momjian [Fri, 21 Sep 2018 23:55:06 +0000 (19:55 -0400)]
docs: remove use of escape strings and use bytea hex output
standard_conforming_strings defaulted to 'on' in PG 9.1.
bytea_output defaulted to 'hex' in PG 9.0.
Reported-by: André Hänsel
Discussion: https://postgr.es/m/
12e601d447ac$
345994a0$
9d0cbde0[email protected]
Backpatch-through: 9.3
Andres Freund [Fri, 21 Sep 2018 01:11:49 +0000 (18:11 -0700)]
Error out for clang on x86-32 without SSE2 support, no -fexcess-precision.
As clang currently doesn't support -fexcess-precision=standard,
compiling x86-32 code with SSE2 disabled, can lead to problems with
floating point overflow checks and the like.
This issue was noticed because clang, on at least some BSDs, defaults
to i386 compatibility, whereas it defaults to pentium4 on Linux. Our
forced usage of __builtin_isinf() lead to some overflow checks not
triggering when compiling for i386, e.g. when the result of the
calculation didn't overflow in 80bit registers, but did so in 64bit.
While we could just fall back to a non-builtin isinf, it seems likely
that the use of 80bit registers leads to other problems (which is why
we force the flag for GCC already). Therefore error out when
detecting clang in that situation.
Reported-By: Victor Wagner
Analyzed-By: Andrew Gierth and Andres Freund
Author: Andres Freund
Discussion: https://postgr.es/m/
20180905005130[email protected]
Backpatch: 9.3-, all supported versions are affected
Tom Lane [Sat, 15 Sep 2018 17:42:34 +0000 (13:42 -0400)]
Fix failure with initplans used conditionally during EvalPlanQual rechecks.
The EvalPlanQual machinery assumes that any initplans (that is,
uncorrelated sub-selects) used during an EPQ recheck would have already
been evaluated during the main query; this is implicit in the fact that
execPlan pointers are not copied into the EPQ estate's es_param_exec_vals.
But it's possible for that assumption to fail, if the initplan is only
reached conditionally. For example, a sub-select inside a CASE expression
could be reached during a recheck when it had not been previously, if the
CASE test depends on a column that was just updated.
This bug is old, appearing to date back to my rewrite of EvalPlanQual in
commit
9f2ee8f28, but was not detected until Kyle Samson reported a case.
To fix, force all not-yet-evaluated initplans used within the EPQ plan
subtree to be evaluated at the start of the recheck, before entering the
EPQ environment. This could be inefficient, if such an initplan is
expensive and goes unused again during the recheck --- but that's piling
one layer of improbability atop another. It doesn't seem worth adding
more complexity to prevent that, at least not in the back branches.
It was convenient to use the new-in-v11 ExecEvalParamExecParams function
to implement this, but I didn't like either its name or the specifics of
its API, so revise that.
Back-patch all the way. Rather than rewrite the patch to avoid depending
on bms_next_member() in the oldest branches, I chose to back-patch that
function into 9.4 and 9.3. (This isn't the first time back-patches have
needed that, and it exhausted my patience.) I also chose to back-patch
some test cases added by commits
71404af2a and
342a1ffa2 into 9.4 and 9.3,
so that the 9.x versions of eval-plan-qual.spec are all the same.
Andrew Gierth diagnosed the problem and contributed the added test cases,
though the actual code changes are by me.
Discussion: https://postgr.es/m/
A033A40A-B234-4324-BE37-
272279F7B627@tripadvisor.com
Peter Eisentraut [Tue, 14 Aug 2018 20:54:52 +0000 (22:54 +0200)]
doc: Update broken links
Discussion: https://www.postgresql.org/message-id/flat/
153044458767.13254.
16049977382403131287%40wrigleys.postgresql.org
Andrew Gierth [Wed, 12 Sep 2018 18:31:06 +0000 (19:31 +0100)]
Repair bug in regexp split performance improvements.
Commit
c8ea87e4b introduced a temporary conversion buffer for
substrings extracted during regexp splits. Unfortunately the code that
sized it was failing to ignore the effects of ignored degenerate
regexp matches, so for regexp_split_* calls it could under-size the
buffer in such cases.
Fix, and add some regression test cases (though those will only catch
the bug if run in a multibyte encoding).
Backpatch to 9.3 as the faulty code was.
Thanks to the PostGIS project, Regina Obe and Paul Ramsey for the
report (via IRC) and assistance in analysis. Patch by me.
Tom Lane [Tue, 1 May 2018 16:02:41 +0000 (12:02 -0400)]
On all Windows platforms, not just Cygwin, use _timezone and _tzname.
Back-patch commit
868628e4f into the 9.5 branch, so that we can support
building that branch with Visual Studio 2015. This patch itself could
go further back, but other VS2015 patches such as
0fb54de9a and
c8e81afc6
were only back-patched to 9.5, so there seems little point in handling
this one differently.
Discussion: https://postgr.es/m/CAD=LzWFg+Z-KUS3Wm8-1J2vOuYErJXbjuE6b7quzswQEBXJWMQ@mail.gmail.com
Now that we have backported VS2015 support to 9.4 and 9.3, backport this also.
Andrew Dunstan [Mon, 25 Sep 2017 12:03:05 +0000 (08:03 -0400)]
Support building with Visual Studio 2017
Haribabu Kommi, reviewed by Takeshi Ideriha and Christian Ullrich
Now backpatched to 9.4 and 9.3
Andrew Dunstan [Fri, 29 Apr 2016 11:59:47 +0000 (07:59 -0400)]
Support building with Visual Studio 2015
Adjust the way we detect the locale. As a result the minumum Windows
version supported by VS2015 and later is Windows Vista. Add some tweaks
to remove new compiler warnings. Remove documentation references to the
now obsolete msysGit.
Michael Paquier, somewhat edited by me, reviewed by Christian Ullrich.
Rather belated backpatch to 9.4 and 9.3
Tom Lane [Sat, 8 Sep 2018 00:09:57 +0000 (20:09 -0400)]
Save/restore SPI's global variables in SPI_connect() and SPI_finish().
This patch removes two sources of interference between nominally
independent functions when one SPI-using function calls another,
perhaps without knowing that it does so.
Chapman Flack pointed out that xml.c's query_to_xml_internal() expects
SPI_tuptable and SPI_processed to stay valid across datatype output
function calls; but it's possible that such a call could involve
re-entrant use of SPI. It seems likely that there are similar hazards
elsewhere, if not in the core code then in third-party SPI users.
Previously SPI_finish() reset SPI's API globals to zeroes/nulls, which
would typically make for a crash in such a situation. Restoring them
to the values they had at SPI_connect() seems like a considerably more
useful behavior, and it still meets the design goal of not leaving any
dangling pointers to tuple tables of the function being exited.
Also, cause SPI_connect() to reset these variables to zeroes/nulls after
saving them. This prevents interference in the opposite direction: it's
possible that a SPI-using function that's only ever been tested standalone
contains assumptions that these variables start out as zeroes. That was
the case as long as you were the outermost SPI user, but not so much for
an inner user. Now it's consistent.
Report and fix suggestion by Chapman Flack, actual patch by me.
Back-patch to all supported branches.
Discussion: https://postgr.es/m/
9fa25bef-2e4f-1c32-22a4-
3ad0723c4a17@anastigmatix.net
Tom Lane [Fri, 7 Sep 2018 22:13:29 +0000 (18:13 -0400)]
Limit depth of forced recursion for CLOBBER_CACHE_RECURSIVELY.
It's somewhat surprising that we got away with this before. (Actually,
since nobody tests this routinely AFAIK, it might've been broken for
awhile. But it's definitely broken in the wake of commit
f868a8143.)
It seems sufficient to limit the forced recursion to a small number
of levels.
Back-patch to all supported branches, like the preceding patch.
Discussion: https://postgr.es/m/12259.
1532117714@sss.pgh.pa.us
Tom Lane [Fri, 7 Sep 2018 22:04:38 +0000 (18:04 -0400)]
Fix longstanding recursion hazard in sinval message processing.
LockRelationOid and sibling routines supposed that, if our session already
holds the lock they were asked to acquire, they could skip calling
AcceptInvalidationMessages on the grounds that we must have already read
any remote sinval messages issued against the relation being locked.
This is normally true, but there's a critical special case where it's not:
processing inside AcceptInvalidationMessages might attempt to access system
relations, resulting in a recursive call to acquire a relation lock.
Hence, if the outer call had acquired that same system catalog lock, we'd
fall through, despite the possibility that there's an as-yet-unread sinval
message for that system catalog. This could, for example, result in
failure to access a system catalog or index that had just been processed
by VACUUM FULL. This is the explanation for buildfarm failures we've been
seeing intermittently for the past three months. The bug is far older
than that, but commits
a54e1f158 et al added a new recursion case within
AcceptInvalidationMessages that is apparently easier to hit than any
previous case.
To fix this, we must not skip calling AcceptInvalidationMessages until
we have *finished* a call to it since acquiring a relation lock, not
merely acquired the lock. (There's already adequate logic inside
AcceptInvalidationMessages to deal with being called recursively.)
Fortunately, we can implement that at trivial cost, by adding a flag
to LOCALLOCK hashtable entries that tracks whether we know we have
completed such a call.
There is an API hazard added by this patch for external callers of
LockAcquire: if anything is testing for LOCKACQUIRE_ALREADY_HELD,
it might be fooled by the new return code LOCKACQUIRE_ALREADY_CLEAR
into thinking the lock wasn't already held. This should be a fail-soft
condition, though, unless something very bizarre is being done in
response to the test.
Also, I added an additional output argument to LockAcquireExtended,
assuming that that probably isn't called by any outside code given
the very limited usefulness of its additional functionality.
Back-patch to all supported branches.
Discussion: https://postgr.es/m/12259.
1532117714@sss.pgh.pa.us
Tom Lane [Thu, 6 Sep 2018 14:49:45 +0000 (10:49 -0400)]
Make contrib/unaccent's unaccent() function work when not in search path.
Since the fixes for CVE-2018-1058, we've advised people to schema-qualify
function references in order to fix failures in code that executes under
a minimal search_path setting. However, that's insufficient to make the
single-argument form of unaccent() work, because it looks up the "unaccent"
text search dictionary using the search path.
The most expedient answer seems to be to remove the search_path dependency
by making it look in the same schema that the unaccent() function itself
is declared in. This will definitely work for the normal usage of this
function with the unaccent dictionary provided by the extension.
It's barely possible that there are people who were relying on the
search-path-dependent behavior to select other dictionaries with the same
name; but if there are any such people at all, they can still get that
behavior by writing unaccent('unaccent', ...), or possibly
unaccent('unaccent'::text::regdictionary, ...) if the lookup has to be
postponed to runtime.
Per complaint from Gunnlaugur Thor Briem. Back-patch to all supported
branches.
Discussion: https://postgr.es/m/CAPs+M8LCex6d=DeneofdsoJVijaG59m9V0ggbb3pOH7hZO4+cQ@mail.gmail.com
Bruce Momjian [Wed, 5 Sep 2018 02:34:07 +0000 (22:34 -0400)]
docs: improve AT TIME ZONE description
The previous description was unclear. Also add a third example, change
use of time zone acronyms to more verbose descriptions, and add a
mention that using 'time' with AT TIME ZONE uses the current time zone
rules.
Backpatch-through: 9.3
Tom Lane [Sat, 1 Sep 2018 20:02:47 +0000 (16:02 -0400)]
Doc: fix oversights in "Client/Server Character Set Conversions" table.
This table claimed that JOHAB could be used as a server encoding, which
was true originally but hasn't been true since 8.3. It also lacked
entries for EUC_JIS_2004 and SHIFT_JIS_2004.
JOHAB problem noted by Lars Kanis, the others by me.
Discussion: https://postgr.es/m/
c0f514a1-b7a9-b9ea-1c02-
c34aead56c06@greiz-reinsdorf.de
Tom Lane [Sat, 1 Sep 2018 19:27:14 +0000 (15:27 -0400)]
Avoid using potentially-under-aligned page buffers.
There's a project policy against using plain "char buf[BLCKSZ]" local
or static variables as page buffers; preferred style is to palloc or
malloc each buffer to ensure it is MAXALIGN'd. However, that policy's
been ignored in an increasing number of places. We've apparently got
away with it so far, probably because (a) relatively few people use
platforms on which misalignment causes core dumps and/or (b) the
variables chance to be sufficiently aligned anyway. But this is not
something to rely on. Moreover, even if we don't get a core dump,
we might be paying a lot of cycles for misaligned accesses.
To fix, invent new union types PGAlignedBlock and PGAlignedXLogBlock
that the compiler must allocate with sufficient alignment, and use
those in place of plain char arrays.
I used these types even for variables where there's no risk of a
misaligned access, since ensuring proper alignment should make
kernel data transfers faster. I also changed some places where
we had been palloc'ing short-lived buffers, for coding style
uniformity and to save palloc/pfree overhead.
Since this seems to be a live portability hazard (despite the lack
of field reports), back-patch to all supported versions.
Patch by me; thanks to Michael Paquier for review.
Discussion: https://postgr.es/m/
1535618100[email protected]
Michael Paquier [Fri, 31 Aug 2018 18:06:09 +0000 (11:06 -0700)]
Ensure correct minimum consistent point on standbys
Startup process has improved its calculation of incorrect minimum
consistent point in
8d68ee6, which ensures that all WAL available gets
replayed when doing crash recovery, and has introduced an incorrect
calculation of the minimum recovery point for non-startup processes,
which can cause incorrect page references on a standby when for example
the background writer flushed a couple of pages on-disk but was not
updating the control file to let a subsequent crash recovery replay to
where it should have.
The only case where this has been reported to be a problem is when a
standby needs to calculate the latest removed xid when replaying a btree
deletion record, so one would need connections on a standby that happen
just after recovery has thought it reached a consistent point. Using a
background worker which is started after the consistent point is reached
would be the easiest way to get into problems if it connects to a
database. Having clients which attempt to connect periodically could
also be a problem, but the odds of seeing this problem are much lower.
The fix used is pretty simple, as the idea is to give access to the
minimum recovery point written in the control file to non-startup
processes so as they use a reference, while the startup process still
initializes its own references of the minimum consistent point so as the
original problem with incorrect page references happening post-promotion
with a crash do not show up.
Reported-by: Alexander Kukushkin
Diagnosed-by: Alexander Kukushkin
Author: Michael Paquier
Reviewed-by: Kyotaro Horiguchi, Alexander Kukushkin
Discussion: https://postgr.es/m/
153492341830.1368.
3936905691758473953@wrigleys.postgresql.org
Backpatch-through: 9.3
Alexander Korotkov [Thu, 30 Aug 2018 11:18:53 +0000 (14:18 +0300)]
Enforce cube dimension limit in all cube construction functions
contrib/cube has a limit to 100 dimensions for cube datatype. However, it's
not enforced everywhere, and one can actually construct cube with more than
100 dimensions having then trouble with dump/restore. This commit add checks
for dimensions limit in all functions responsible for cube construction.
Backpatch to all supported versions.
Reported-by: Andrew Gierth
Discussion: https://postgr.es/m/87va7uybt4.fsf%40news-spur.riddles.org.uk
Author: Andrey Borodin with small additions by me
Review: Tom Lane
Backpatch-through: 9.3
Alexander Korotkov [Thu, 30 Aug 2018 11:09:25 +0000 (14:09 +0300)]
Split contrib/cube platform-depended checks into separate test
We're currently maintaining two outputs for cube regression test. But that
appears to be unsuitable, because these outputs are different in out few checks
involving scientific notation. So, split checks involving scientific notation
into separate test, making contrib/cube easier to maintain. Backpatch to all
supported versions in order to make further backpatching easier.
Discussion: https://postgr.es/m/CAPpHfdvJgWjxHsJTtT%2Bo1tz3OR8EFHcLQjhp-d3%2BUcmJLh-fQA%40mail.gmail.com
Author: Alexander Korotkov
Backpatch-through: 9.3
Tom Lane [Fri, 31 Aug 2018 16:26:20 +0000 (12:26 -0400)]
Make checksum_impl.h safe to compile with -fstrict-aliasing.
In general, Postgres requires -fno-strict-aliasing with compilers that
implement C99 strict aliasing rules. There's little hope of getting
rid of that overall. But it seems like it would be a good idea if
storage/checksum_impl.h in particular didn't depend on it, because
that header is explicitly intended to be included by external programs.
We don't have a lot of control over the compiler switches that an
external program might use, as shown by Michael Banck's report of
failure in a privately-modified version of pg_verify_checksums.
Hence, switch to using a union in place of willy-nilly pointer casting
inside this file. I think this makes the code a bit more readable
anyway.
checksum_impl.h hasn't changed since it was introduced in 9.3,
so back-patch all the way.
Discussion: https://postgr.es/m/
1535618100[email protected]
Andrew Gierth [Tue, 28 Aug 2018 08:52:25 +0000 (09:52 +0100)]
Avoid quadratic slowdown in regexp match/split functions.
regexp_matches, regexp_split_to_table and regexp_split_to_array all
work by compiling a list of match positions as character offsets (NOT
byte positions) in the source string.
Formerly, they then used text_substr to extract the matched text; but
in a multi-byte encoding, that counts the characters in the string,
and the characters needed to reach the starting byte position, on
every call. Accordingly, the performance degraded as the product of
the input string length and the number of match positions, such that
splitting a string of a few hundred kbytes could take many minutes.
Repair by keeping the wide-character copy of the input string
available (only in the case where encoding_max_length is not 1) after
performing the match operation, and extracting substrings from that
instead. This reduces the complexity to being linear in the number of
result bytes, discounting the actual regexp match itself (which is not
affected by this patch).
In passing, remove cleanup using retail pfree() which was obsoleted by
commit
ff428cded (Feb 2008) which made cleanup of SRF multi-call
contexts automatic. Also increase (to ~134 million) the maximum number
of matches and provide an error message when it is reached.
Backpatch all the way because this has been wrong forever.
Analysis and patch by me; review by Kaiting Chen.
Discussion: https://postgr.es/m/
[email protected]
see also https://postgr.es/m/
[email protected]
Tom Lane [Sun, 26 Aug 2018 18:21:55 +0000 (14:21 -0400)]
Make syslogger more robust against failures in opening CSV log files.
The previous coding figured it'd be good enough to postpone opening
the first CSV log file until we got a message we needed to write there.
This is unsafe, though, because if the open fails we end up in infinite
recursion trying to report the failure. Instead make the CSV log file
management code look as nearly as possible like the longstanding logic
for the stderr log file. In particular, open it immediately at postmaster
startup (if enabled), or when we get a SIGHUP in which we find that
log_destination has been changed to enable CSV logging.
It seems OK to fail if a postmaster-start-time open attempt fails, as
we've long done for the stderr log file. But we can't die if we fail
to open a CSV log file during SIGHUP, so we're still left with a problem.
In that case, write any output meant for the CSV log file to the stderr
log file. (This will also cover race-condition cases in which backends
send CSV log data before or after we have the CSV log file open.)
This patch also fixes an ancient oversight that, if CSV logging was
turned off during a SIGHUP, we never actually closed the last CSV
log file.
In passing, remember to reset whereToSendOutput = DestNone during syslogger
start, since (unlike all other postmaster children) it's forked before the
postmaster has done that. This made for a platform-dependent difference
in error reporting behavior between the syslogger and other children:
except on Windows, it'd report problems to the original postmaster stderr
as well as the normal error log file(s). It's barely possible that that
was intentional at some point; but it doesn't seem likely to be desirable
in production, and the platform dependency definitely isn't desirable.
Per report from Alexander Kukushkin. It's been like this for a long time,
so back-patch to all supported branches.
Discussion: https://postgr.es/m/CAFh8B==iLUD_gqC-dAENS0V+kVrCeGiKujtKqSQ7++S-caaChw@mail.gmail.com
Bruce Momjian [Sat, 25 Aug 2018 17:01:24 +0000 (13:01 -0400)]
doc: add doc link for 'applicable_roles'
Reported-by: Ashutosh Sharma
Discussion: https://postgr.es/m/CAE9k0PnhnL6MNDLuvkk8USzOa_DpzDzFQPAM_uaGuXbh9HMKYw@mail.gmail.com
Author: Ashutosh Sharma
Backpatch-through: 9.3
Bruce Momjian [Sat, 25 Aug 2018 15:52:29 +0000 (11:52 -0400)]
docs: clarify plpython SD and GD dictionary behavior
Reported-by: Adam Bielański
Discussion: https://postgr.es/m/
153484305538.1370.
7605856225879294548@wrigleys.postgresql.org
Backpatch-through: 9.3
Andrew Gierth [Thu, 23 Aug 2018 15:35:33 +0000 (16:35 +0100)]
Reduce an unnecessary O(N^3) loop in lexer.
The lexer's handling of operators contained an O(N^3) hazard when
dealing with long strings of + or - characters; it seems hard to
prevent this case from being O(N^2), but the additional N multiplier
was not needed.
Backpatch all the way since this has been there since 7.x, and it
presents at least a mild hazard in that trying to do Bind, PREPARE or
EXPLAIN on a hostile query could take excessive time (without
honouring cancels or timeouts) even if the query was never executed.
Michael Paquier [Tue, 21 Aug 2018 06:18:35 +0000 (15:18 +0900)]
Fix set of NLS translation issues
While monitoring the code, it has been noticed that GSSAPI
authentication missed two translations.
Reported-by: Kyotaro Horiguchi
Author: Kyotaro Horiguchi
Reviewed-by: Michael Paquier, Tom Lane
Discussion: https://postgr.es/m/
20180810.152131.
31921918[email protected]
Backpatch-through: 9.3
Tom Lane [Fri, 17 Aug 2018 21:12:21 +0000 (17:12 -0400)]
Ensure schema qualification in pg_restore DISABLE/ENABLE TRIGGER commands.
Previously, this code blindly followed the common coding pattern of
passing PQserverVersion(AH->connection) as the server-version parameter
of fmtQualifiedId. That works as long as we have a connection; but in
pg_restore with text output, we don't. Instead we got a zero from
PQserverVersion, which fmtQualifiedId interpreted as "server is too old to
have schemas", and so the name went unqualified. That still accidentally
managed to work in many cases, which is probably why this ancient bug went
undetected for so long. It only became obvious in the wake of the changes
to force dump/restore to execute with restricted search_path.
In HEAD/v11, let's deal with this by ripping out fmtQualifiedId's server-
version behavioral dependency, and just making it schema-qualify all the
time. We no longer support pg_dump from servers old enough to need the
ability to omit schema name, let alone restoring to them. (Also, the few
callers outside pg_dump already didn't work with pre-schema servers.)
In older branches, that's not an acceptable solution, so instead just
tweak the DISABLE/ENABLE TRIGGER logic to ensure it will schema-qualify
its output regardless of server version.
Per bug #15338 from Oleg somebody. Back-patch to all supported branches.
Discussion: https://postgr.es/m/
153452458706.1316.
5328079417086507743@wrigleys.postgresql.org
Andrew Gierth [Fri, 17 Aug 2018 14:04:26 +0000 (15:04 +0100)]
Set scan direction appropriately for SubPlans (bug #15336)
When executing a SubPlan in an expression, the EState's direction
field was left alone, resulting in an attempt to execute the subplan
backwards if it was encountered during a backwards scan of a cursor.
Also, though much less likely, it was possible to reach the execution
of an InitPlan while in backwards-scan state.
Repair by saving/restoring estate->es_direction and forcing forward
scan mode in the relevant places.
Backpatch all the way, since this has been broken since 8.3 (prior to
commit
c7ff7663e, SubPlans had their own EStates rather than sharing
the parent plan's, so there was no confusion over scan direction).
Per bug #15336 reported by Vladimir Baranoff; analysis and patch by
me, review by Tom Lane.
Discussion: https://postgr.es/m/
153449812167.1304.
1741624125628126322@wrigleys.postgresql.org
Bruce Momjian [Fri, 17 Aug 2018 14:25:48 +0000 (10:25 -0400)]
pg_upgrade: issue helpful error message for use on standbys
Commit
777e6ddf1723306bd2bf8fe6f804863f459b0323 checked for a shut down
message from a standby and allowed it to continue. This patch reports a
helpful error message in these cases, suggesting to use rsync as
documented.
Diagnosed-by: Martín Marqués
Discussion: https://postgr.es/m/CAPdiE1xYCow-reLjrhJ9DqrMu-ppNq0ChUUEvVdxhdjGRD5_eA@mail.gmail.com
Backpatch-through: 9.3
Michael Paquier [Fri, 17 Aug 2018 02:29:15 +0000 (11:29 +0900)]
Mention ownership requirements for REFRESH MATERIALIZED VIEW in docs
Author: Dian Fay
Discussion: https://postgr.es/m/
745abbd2-a1a0-ead8-2cb2-
768c16747d97@gmail.com
Backpatch-through: 9.3
Tom Lane [Wed, 15 Aug 2018 21:25:24 +0000 (17:25 -0400)]
Make snprintf.c follow the C99 standard for snprintf's result value.
C99 says that the result should be the number of bytes that would have
been emitted given a large enough buffer, not the number we actually
were able to put in the buffer. It's time to make our substitute
implementation comply with that. Not doing so results in inefficiency
in buffer-enlargement cases, and also poses a portability hazard for
third-party code that might expect C99-compliant snprintf behavior
within Postgres.
In passing, remove useless tests for str == NULL; neither C99 nor
predecessor standards ever allowed that except when count == 0,
so I see no reason to expend cycles on making that a non-crash case
for this implementation. Also, don't waste a byte in pg_vfprintf's
local I/O buffer; this might have performance benefits by allowing
aligned writes during flushbuffer calls.
Back-patch of commit
805889d7d. There was some concern about this
possibly breaking code that assumes pre-C99 behavior, but there is
much more risk (and reality, in our own code) of code that assumes
C99 behavior and hence fails to detect buffer overrun without this.
Discussion: https://postgr.es/m/17245.
1534289329@sss.pgh.pa.us
Tom Lane [Wed, 15 Aug 2018 20:29:32 +0000 (16:29 -0400)]
Clean up assorted misuses of snprintf()'s result value.
Fix a small number of places that were testing the result of snprintf()
but doing so incorrectly. The right test for buffer overrun, per C99,
is "result >= bufsize" not "result > bufsize". Some places were also
checking for failure with "result == -1", but the standard only says
that a negative value is delivered on failure.
(Note that this only makes these places correct if snprintf() delivers
C99-compliant results. But at least now these places are consistent
with all the other places where we assume that.)
Also, make psql_start_test() and isolation_start_test() check for
buffer overrun while constructing their shell commands. There seems
like a higher risk of overrun, with more severe consequences, here
than there is for the individual file paths that are made elsewhere
in the same functions, so this seemed like a worthwhile change.
Also fix guc.c's do_serialize() to initialize errno = 0 before
calling vsnprintf. In principle, this should be unnecessary because
vsnprintf should have set errno if it returns a failure indication ...
but the other two places this coding pattern is cribbed from don't
assume that, so let's be consistent.
These errors are all very old, so back-patch as appropriate. I think
that only the shell command overrun cases are even theoretically
reachable in practice, but there's not much point in erroneous error
checks.
Discussion: https://postgr.es/m/17245.
1534289329@sss.pgh.pa.us
Bruce Momjian [Tue, 14 Aug 2018 21:19:02 +0000 (17:19 -0400)]
pg_upgrade: fix shutdown check for standby servers
Commit
244142d32afd02e7408a2ef1f249b00393983822 only tested for the
pg_controldata output for primary servers, but standby servers have
different "Database cluster state" output, so check for that too.
Diagnosed-by: Michael Paquier
Discussion: https://postgr.es/m/
20180810164240[email protected]
Backpatch-through: 9.3
Bruce Momjian [Thu, 9 Aug 2018 14:13:15 +0000 (10:13 -0400)]
docs: Only first instance of a PREPARE parameter sets data type
If the first reference to $1 is "($1 = col) or ($1 is null)", the data
type can be determined, but not for "($1 is null) or ($1 = col)". This
change documents this.
Reported-by: Morgan Owens
Discussion: https://postgr.es/m/
153233728858.1404.
15268121695358514937@wrigleys.postgresql.org
Backpatch-through: 9.3
Heikki Linnakangas [Wed, 8 Aug 2018 16:08:10 +0000 (19:08 +0300)]
Don't run atexit callbacks in quickdie signal handlers.
exit() is not async-signal safe. Even if the libc implementation is, 3rd
party libraries might have installed unsafe atexit() callbacks. After
receiving SIGQUIT, we really just want to exit as quickly as possible, so
we don't really want to run the atexit() callbacks anyway.
The original report by Jimmy Yih was a self-deadlock in startup_die().
However, this patch doesn't address that scenario; the signal handling
while waiting for the startup packet is more complicated. But at least this
alleviates similar problems in the SIGQUIT handlers, like that reported
by Asim R P later in the same thread.
Backpatch to 9.3 (all supported versions).
Discussion: https://www.postgresql.org/message-id/CAOMx_OAuRUHiAuCg2YgicZLzPVv5d9_H4KrL_OFsFP%3DVPekigA%40mail.gmail.com
Tom Lane [Tue, 7 Aug 2018 20:32:50 +0000 (16:32 -0400)]
Don't record FDW user mappings as members of extensions.
CreateUserMapping has a recordDependencyOnCurrentExtension call that's
been there since extensions were introduced (very possibly my fault).
However, there's no support anywhere else for user mappings as members
of extensions, nor are they listed as a possible member object type in
the documentation. Nor does it really seem like a good idea for user
mappings to belong to extensions when roles don't. Hence, remove the
bogus call.
(As we saw in bug #15310, the lack of any pg_dump support for this case
ensures that any such membership record would silently disappear during
pg_upgrade. So there's probably no need for us to do anything else
about cleaning up after this mistake.)
Discussion: https://postgr.es/m/27952.
1533667213@sss.pgh.pa.us
Tom Lane [Tue, 7 Aug 2018 20:00:44 +0000 (16:00 -0400)]
Fix incorrect initialization of BackendActivityBuffer.
Since commit
c8e8b5a6e, this has been zeroed out using the wrong length.
In practice the length would always be too small, leading to not zeroing
the whole buffer rather than clobbering additional memory; and that's
pretty harmless, both because shmem would likely start out as zeroes
and because we'd reinitialize any given entry before use. Still,
it's bogus, so fix it.
Reported by Petru-Florin Mihancea (bug #15312)
Discussion: https://postgr.es/m/
153363913073.1303.
6518849192351268091@wrigleys.postgresql.org
Tom Lane [Tue, 7 Aug 2018 19:43:49 +0000 (15:43 -0400)]
Fix pg_upgrade to handle event triggers in extensions correctly.
pg_dump with --binary-upgrade must emit ALTER EXTENSION ADD commands
for all objects that are members of extensions. It forgot to do so for
event triggers, as per bug #15310 from Nick Barnes. Back-patch to 9.3
where event triggers were introduced.
Haribabu Kommi
Discussion: https://postgr.es/m/
153360083872.1395.
4593932457718151600@wrigleys.postgresql.org
Tom Lane [Tue, 7 Aug 2018 17:13:42 +0000 (13:13 -0400)]
Ensure pg_dump_sort.c sorts null vs non-null namespace consistently.
The original coding here (which is, I believe, my fault) supposed that
it didn't need to concern itself with the possibility that one object
of a given type-priority has a namespace while another doesn't. But
that's not reliably true anymore, if it ever was; and if it does happen
then it's possible that DOTypeNameCompare returns self-inconsistent
comparison results. That leads to unspecified behavior in qsort()
and a resultant weird output order from pg_dump.
This should end up being only a cosmetic problem, because any ordering
constraints that actually matter should be enforced by the later
dependency-based sort. Still, it's a bug, so back-patch.
Report and fix by Jacob Champion, though I editorialized on his
patch to the extent of making NULL sort after non-NULL, for consistency
with our usual sorting definitions.
Discussion: https://postgr.es/m/CABAq_6Hw+V-Kj7PNfD5tgOaWT_-qaYkc+SRmJkPLeUjYXLdxwQ@mail.gmail.com
Tom Lane [Mon, 6 Aug 2018 20:13:40 +0000 (16:13 -0400)]
Stamp 9.3.24.
Peter Eisentraut [Mon, 6 Aug 2018 17:30:02 +0000 (19:30 +0200)]
Translation updates
Source-Git-URL: https://git.postgresql.org/git/pgtranslation/messages.git
Source-Git-Hash:
e4d7d445c8afaf0fe2bccc834027d8893e2a7e61
Tom Lane [Mon, 6 Aug 2018 17:13:41 +0000 (13:13 -0400)]
Last-minute updates for release notes.
Security: CVE-2018-10915, CVE-2018-10925