Horton

Re: pg_dump versus ancient server versions

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Andres Freund <andres@anarazel.de>
Cc: Robert Haas <robertmhaas@gmail.com>, Andrew Dunstan <andrew@dunslane.net>, Alvaro Herrera <alvherre@alvh.no-ip.org>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2021-10-25T17:14:19Z
Lists: pgsql-hackers 
Andres Freund <andres@anarazel.de> writes:
> On 2021-10-25 10:23:40 -0400, Tom Lane wrote:
>> It seems like a fresh checkout from the repo would be little more expensive
>> than the current copy-a-checkout process.)

> I haven't looked in detail, but from what I've seen in the logs the
> is-there-anything-new check is already not cheap, and does a checkout / update
> of the git directory.

Yeah, you probably need a checkout to apply the rule about don't rebuild
after documentation-only changes.  But it seems like the case where the
branch tip hasn't moved at all could be optimized fairly easily.  I'm not
sure it's worth the trouble to add code for that given our current usage
of the buildfarm; but if we were to start tracking branches that only
change a couple of times a year, it would be.

			regards, tom lane

Commits

  1. Remove psql support for server versions preceding 9.2.

  2. Clean up some more freshly-dead code in pg_dump and pg_upgrade.

  3. Remove pg_dump's --no-synchronized-snapshots switch.

  4. Remove pg_upgrade support for upgrading from pre-9.2 servers.

  5. Remove pg_dump/pg_dumpall support for dumping from pre-9.2 servers.

  6. Suppress -Warray-bounds warning in 9.2's xlog.c.

  7. Suppress -Wformat-overflow warnings in 9.2's xml.c.

  8. Disable -Wsometimes-uninitialized warnings in the 9.2 branch.

  9. Fix function return type confusion

  10. Fix compiler warning

  11. Silence another gcc 11 warning.

  12. Suppress uninitialized-variable warning in guc.c.

  13. Suppress -Warray-parameter warnings in pgcrypto/sha2.c.

  14. Reformat imath.c macro to remove -Wmisleading-indentation warnings.

  15. Clean up compilation warnings coming from PL/Perl with clang-12~

  16. Make ecpg's rjulmdy() and rmdyjul() agree with their declarations.

  17. Use -Wno-format-truncation and -Wno-stringop-truncation, if available.

  18. Make pg_upgrade's test.sh less chatty.

  19. Add checks for valid multibyte character length in UtfToLocal, LocalToUtf.

  20. Use return instead of exit() in configure

  21. Add support for Visual Studio 2019 in build scripts