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There are cases where we cannot / do not want to error out for invalidly encoded input. In such cases it can be useful to replace e.g. an incomplete multi-byte characters with bytes that will trigger an error when getting validated as part of a larger string. Unfortunately, until now, for some encoding no such sequence existed. For those encodings this commit removes one previously accepted input combination - we consider that to be ok, as the chosen bytes are outside of the valid ranges for the encodings, we just previously failed to detect that. As we cannot add a new field to pg_wchar_table without breaking ABI, this is implemented "in-line" in the newly added function. Author: Noah Misch <noah@leadboat.com> Reviewed-by: Andres Freund <andres@anarazel.de> Backpatch-through: 13 Security: CVE-2025-1094
PostgreSQL tests ================ This directory contains a variety of test infrastructure as well as some of the tests in PostgreSQL. Not all tests are here -- in particular, there are more in individual contrib/ modules and in src/bin. Not all these tests get run by "make check". Check src/test/Makefile to see which tests get run automatically. authentication/ Tests for authentication (but see also below) examples/ Demonstration programs for libpq that double as regression tests via "make check" isolation/ Tests for concurrent behavior at the SQL level kerberos/ Tests for Kerberos/GSSAPI authentication and encryption ldap/ Tests for LDAP-based authentication locale/ Sanity checks for locale data, encodings, etc mb/ Tests for multibyte encoding (UTF-8) support modules/ Extensions used only or mainly for test purposes, generally not suitable for installing in production databases perl/ Infrastructure for Perl-based TAP tests recovery/ Test suite for recovery and replication regress/ PostgreSQL's main regression test suite, pg_regress ssl/ Tests to exercise and verify SSL certificate handling subscription/ Tests for logical replication