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Tom Lane 89ef2aedae Fix pl/tcl's handling of errors from Tcl_ListObjGetElements(). 
In a procedure or function returning tuple, we use that function to
parse the Tcl script's result, which is supposed to be a Tcl list.
If it isn't, you get an error.  Commit 26abb50c4 incautiously
supposed that we could use throw_tcl_error() to report such an error.
That doesn't actually work, because low-level functions like
Tcl_ListObjGetElements() don't fill Tcl's errorInfo variable.
The result is either a null-pointer-dereference crash or emission
of misleading context information describing the previous Tcl error.

Back off to just reporting the interpreter's result string, and
improve throw_tcl_error()'s comment to explain when to use it.

Also, although the similar code in pltcl_trigger_handler() avoided
this mistake, it was using a fairly confusing wording of the
error message.  Improve that while we're here.

Per report from A. Kozhemyakin.  Back-patch to all supported
branches.

Erik Wienhold and Tom Lane

Discussion: https://postgr.es/m/6a2a1c40-2b2c-4a33-8b72-243c0766fcda@postgrespro.ru
2024-06-04 18:02:13 -04:00
config Log LLVM library version in configure output. 2023-10-22 14:24:04 +13:00
contrib Make postgres_fdw request remote time zone 'GMT' not 'UTC'. 2024-04-21 13:46:20 -04:00
doc Fix documentation for System V semaphores. 2024-06-03 12:10:43 -05:00
src Fix pl/tcl's handling of errors from Tcl_ListObjGetElements(). 2024-06-04 18:02:13 -04:00
.cirrus.star ci: Prepare to make compute resources for CI configurable 2023-08-23 15:15:29 -07:00
.cirrus.tasks.yml ci: windows: Use the same image for VS and MinGW tasks 2024-06-03 19:14:57 -07:00
.cirrus.yml ci: Make compute resources for CI configurable 2023-08-23 15:15:29 -07:00
.dir-locals.el Make Emacs perl-mode indent more like perltidy. 2019-01-13 11:32:31 -08:00
.editorconfig Add .editorconfig 2019-12-18 09:13:13 +01:00
.git-blame-ignore-revs Backpatch addition of .git-blame-ignore-revs 2022-08-05 19:36:24 +02:00
.gitattributes Remove non-existing file from .gitattributes 2024-02-16 11:40:57 +01:00
.gitignore Add portlock directory to .gitignore 2022-11-26 07:47:01 -05:00
aclocal.m4 Probe $PROVE not $PERL while checking for modules needed by TAP tests. 2021-11-22 12:54:52 -05:00
configure Stamp 15.7. 2024-05-06 16:23:18 -04:00
configure.ac Stamp 15.7. 2024-05-06 16:23:18 -04:00
COPYRIGHT Update copyright for 2024 2024-01-03 20:49:04 -05:00
GNUmakefile.in Remove temporary portlock directory during make [dist]clean. 2022-11-26 10:30:46 -05:00
HISTORY Canonicalize some URLs 2020-02-10 20:47:50 +01:00
Makefile Dynamically find correct installation docs in Makefile. 2022-01-19 14:48:25 +01:00
README Canonicalize some URLs 2020-02-10 20:47:50 +01:00
README.git Canonicalize some URLs 2020-02-10 20:47:50 +01:00

README 

PostgreSQL Database Management System
=====================================

This directory contains the source code distribution of the PostgreSQL
database management system.

PostgreSQL is an advanced object-relational database management system
that supports an extended subset of the SQL standard, including
transactions, foreign keys, subqueries, triggers, user-defined types
and functions.  This distribution also contains C language bindings.

PostgreSQL has many language interfaces, many of which are listed here:

	https://www.postgresql.org/download/

See the file INSTALL for instructions on how to build and install
PostgreSQL.  That file also lists supported operating systems and
hardware platforms and contains information regarding any other
software packages that are required to build or run the PostgreSQL
system.  Copyright and license information can be found in the
file COPYRIGHT.  A comprehensive documentation set is included in this
distribution; it can be read as described in the installation
instructions.

The latest version of this software may be obtained at
https://www.postgresql.org/download/.  For more information look at our
web site located at https://www.postgresql.org/.