# Connector/C 3.4.9 Changelog

<a href="https://mariadb.com/downloads/connectors/connectors-data-access/c-connector" class="button primary">Download</a> <a href="/pages/OlOxADNpJ1xWTk5R71Uo" class="button secondary">Release Notes</a> <a href="/pages/jcEXJZpJLwZefh7bbKjx" class="button secondary">Changelog</a> <a href="/spaces/CjGYMsT2MVP4nd3IyW2L/pages/iaR8JUIJhAdBxxadFJzY" class="button secondary">About MariaDB Connector/C</a>

**Release date:** 10 Jun 2026

For the highlights of this release, see the [release notes](/docs/release-notes/connectors/c/3.4/3.4.9.md).

The revision number links will take you to the revision's page on GitHub. On [GitHub](https://github.com/MariaDB/mariadb-connector-c/) you can view more details of the revision and view diffs of the code modified in that revision.

* [Revision #64e9fe09](https://github.com/mariadb-corporation/mariadb-connector-c/commit/64e9fe09) <sub>*<mark style="color:$info;">2026-05-06 10:12:37 +0200</mark>*</sub>
  * Merge branch '3.3' into 3.4
* [Revision #93bb9266](https://github.com/mariadb-corporation/mariadb-connector-c/commit/93bb9266) <sub>*<mark style="color:$info;">2026-05-01 17:55:58 +0200</mark>*</sub>
  * \[misc] Skip test\_conc26 on MaxScale
* [Revision #1e575c00](https://github.com/mariadb-corporation/mariadb-connector-c/commit/1e575c00) <sub>*<mark style="color:$info;">2026-05-01 17:05:29 +0200</mark>*</sub>
  * \[misc] add maxscale testing
* [Revision #050019d6](https://github.com/mariadb-corporation/mariadb-connector-c/commit/050019d6) <sub>*<mark style="color:$info;">2026-04-27 12:46:55 +0200</mark>*</sub>
  * Fix memory leak in rpl\_api
* [Revision #c4c48b39](https://github.com/mariadb-corporation/mariadb-connector-c/commit/c4c48b39) <sub>*<mark style="color:$info;">2026-05-04 17:40:03 +0200</mark>*</sub>
  * \[misc] Use SSL port for MaxScale TLS connections in tests
* [Revision #6c662d6d](https://github.com/mariadb-corporation/mariadb-connector-c/commit/6c662d6d) <sub>*<mark style="color:$info;">2026-05-04 16:10:04 +0200</mark>*</sub>
  * \[misc] Fix operator precedence in IS\_MAXSCALE\_ENV macro
* [Revision #00657aca](https://github.com/mariadb-corporation/mariadb-connector-c/commit/00657aca) <sub>*<mark style="color:$info;">2026-05-01 17:55:58 +0200</mark>*</sub>
  * \[misc] Skip test\_conc26 on MaxScale
* [Revision #a5be7175](https://github.com/mariadb-corporation/mariadb-connector-c/commit/a5be7175) <sub>*<mark style="color:$info;">2026-05-01 17:05:29 +0200</mark>*</sub>
  * \[misc] add maxscale testing
* [Revision #d105f057](https://github.com/mariadb-corporation/mariadb-connector-c/commit/d105f057) <sub>*<mark style="color:$info;">2026-04-29 14:19:02 +0200</mark>*</sub>
  * Fix warning (uninitilized second\_part)
* [Revision #0b599fd7](https://github.com/mariadb-corporation/mariadb-connector-c/commit/0b599fd7) <sub>*<mark style="color:$info;">2026-04-27 12:46:55 +0200</mark>*</sub>
  * Fix memory leak in rpl\_api
* [Revision #1303bea4](https://github.com/mariadb-corporation/mariadb-connector-c/commit/1303bea4) <sub>*<mark style="color:$info;">2026-04-27 12:45:16 +0200</mark>*</sub>
  * Merge branch '3.3' into 3.4
* [Revision #d276b4f8](https://github.com/mariadb-corporation/mariadb-connector-c/commit/d276b4f8) <sub>*<mark style="color:$info;">2026-04-27 12:42:05 +0200</mark>*</sub>
  * Fix memory leaks if binlog is disabled
* [Revision #5c33e224](https://github.com/mariadb-corporation/mariadb-connector-c/commit/5c33e224) <sub>*<mark style="color:$info;">2026-04-24 17:05:46 +0200</mark>*</sub>
  * Merge branch '3.3' into 3.4
* [Revision #1f168de4](https://github.com/mariadb-corporation/mariadb-connector-c/commit/1f168de4) <sub>*<mark style="color:$info;">2026-04-21 19:34:11 +0200</mark>*</sub>
  * CONC-819 mysql\_real\_escape\_string incorrectly handles big5
* [Revision #12fd1ca4](https://github.com/mariadb-corporation/mariadb-connector-c/commit/12fd1ca4) <sub>*<mark style="color:$info;">2026-04-16 22:53:51 +0800</mark>*</sub>
  * MDEV-38550 add LENENC support for COM\_CHANGE\_USER
* [Revision #c33d8cd1](https://github.com/mariadb-corporation/mariadb-connector-c/commit/c33d8cd1) <sub>*<mark style="color:$info;">2026-04-09 09:17:38 +0200</mark>*</sub>
  * Merge pull request #306 from FaramosCZ/CONC-816
* [Revision #925b771f](https://github.com/mariadb-corporation/mariadb-connector-c/commit/925b771f) <sub>*<mark style="color:$info;">2026-04-08 00:40:11 +0200</mark>*</sub>
  * CONC-816: remove MSVC\_VERSION > 1310 guards in WindowsCache
* [Revision #a7171cb9](https://github.com/mariadb-corporation/mariadb-connector-c/commit/a7171cb9) <sub>*<mark style="color:$info;">2026-04-08 00:18:28 +0200</mark>*</sub>
  * CONC-816: remove dead cmake version checks
* [Revision #ec651c18](https://github.com/mariadb-corporation/mariadb-connector-c/commit/ec651c18) <sub>*<mark style="color:$info;">2026-04-07 23:54:34 +0200</mark>*</sub>
  * CONC-816: INCLUDE(FindXXX) -> FIND\_PACKAGE(XXX)
* [Revision #e7ecbca6](https://github.com/mariadb-corporation/mariadb-connector-c/commit/e7ecbca6) <sub>*<mark style="color:$info;">2026-04-07 23:54:16 +0200</mark>*</sub>
  * CONC-816: drop redundant conditions from ENDIF/ELSE
* [Revision #7aa57104](https://github.com/mariadb-corporation/mariadb-connector-c/commit/7aa57104) <sub>*<mark style="color:$info;">2026-04-07 23:53:26 +0200</mark>*</sub>
  * CONC-816: CMAKE\_COMPILER\_IS\_GNUCC -> CMAKE\_C\_COMPILER\_ID
* [Revision #daabd5f1](https://github.com/mariadb-corporation/mariadb-connector-c/commit/daabd5f1) <sub>*<mark style="color:$info;">2026-04-07 23:53:18 +0200</mark>*</sub>
  * CONC-816: remove dead cmake version check in misc.cmake
* [Revision #92427f56](https://github.com/mariadb-corporation/mariadb-connector-c/commit/92427f56) <sub>*<mark style="color:$info;">2026-04-07 23:30:50 +0200</mark>*</sub>
  * CONC-816: ADD\_DEFINITIONS -> add\_compile\_definitions
* [Revision #c8acc35f](https://github.com/mariadb-corporation/mariadb-connector-c/commit/c8acc35f) <sub>*<mark style="color:$info;">2026-04-07 23:13:44 +0200</mark>*</sub>
  * CONC-816: use NAMELINK\_COMPONENT (available since cmake 3.12)
* [Revision #3c445692](https://github.com/mariadb-corporation/mariadb-connector-c/commit/3c445692) <sub>*<mark style="color:$info;">2026-04-07 23:13:38 +0200</mark>*</sub>
  * CONC-816: drop obsolete cmake policy loop
* [Revision #5658137e](https://github.com/mariadb-corporation/mariadb-connector-c/commit/5658137e) <sub>*<mark style="color:$info;">2026-04-09 08:59:14 +0200</mark>*</sub>
  * Merge pull request #305 from FaramosCZ/CONC-813+CONC-814
* [Revision #ca693317](https://github.com/mariadb-corporation/mariadb-connector-c/commit/ca693317) <sub>*<mark style="color:$info;">2026-03-30 00:29:45 +0200</mark>*</sub>
  * CONC-813, CONC-814 Fix UBSan errors
* [Revision #7b5d26c1](https://github.com/mariadb-corporation/mariadb-connector-c/commit/7b5d26c1) <sub>*<mark style="color:$info;">2026-04-09 08:53:51 +0200</mark>*</sub>
  * Merge branch '3.3' into 3.4
* [Revision #67984288](https://github.com/mariadb-corporation/mariadb-connector-c/commit/67984288) <sub>*<mark style="color:$info;">2026-04-09 08:30:42 +0200</mark>*</sub>
  * Fix MARIADB\_TIMESTAMP calculation and packing (CONC-815)
* [Revision #47b35eaa](https://github.com/mariadb-corporation/mariadb-connector-c/commit/47b35eaa) <sub>*<mark style="color:$info;">2026-04-01 09:45:11 +0200</mark>*</sub>
  * CONC-769: add NULL checks for ma\_hash\_new() return value (#304)
* [Revision #06d2f8dc](https://github.com/mariadb-corporation/mariadb-connector-c/commit/06d2f8dc) <sub>*<mark style="color:$info;">2026-03-30 02:22:15 -0400</mark>*</sub>
  * Fix CONC-396, "!includedir in my.cnf does not include all .cnf and .ini files in the directory" (#255)
* [Revision #645dddd2](https://github.com/mariadb-corporation/mariadb-connector-c/commit/645dddd2) <sub>*<mark style="color:$info;">2026-03-29 19:35:15 +0200</mark>*</sub>
  * Merge branch '3.3' into 3.4
* [Revision #40806da9](https://github.com/mariadb-corporation/mariadb-connector-c/commit/40806da9) <sub>*<mark style="color:$info;">2026-03-26 08:31:24 +0100</mark>*</sub>
  * Follow up of 5fe4d03f26045d1215e894d16054935ddd65ecc0:
* [Revision #5fe4d03f](https://github.com/mariadb-corporation/mariadb-connector-c/commit/5fe4d03f) <sub>*<mark style="color:$info;">2026-03-23 13:39:10 +0100</mark>*</sub>
  * Fix for CONC-812:
* [Revision #dc903ae2](https://github.com/mariadb-corporation/mariadb-connector-c/commit/dc903ae2) <sub>*<mark style="color:$info;">2026-01-30 17:58:49 +0100</mark>*</sub>
  * \[misc] use DOCKER\_LOGIN as user if secret available
* [Revision #7a5c80e8](https://github.com/mariadb-corporation/mariadb-connector-c/commit/7a5c80e8) <sub>*<mark style="color:$info;">2026-01-09 11:29:01 +0200</mark>*</sub>
  * MDEV-38499: cmake and compile errors on MacOSX when compiling mariadb from a git tree
* [Revision #521ef4f7](https://github.com/mariadb-corporation/mariadb-connector-c/commit/521ef4f7) <sub>*<mark style="color:$info;">2026-03-29 17:33:31 +0200</mark>*</sub>
  * Use stronger password for test
* [Revision #1df765dc](https://github.com/mariadb-corporation/mariadb-connector-c/commit/1df765dc) <sub>*<mark style="color:$info;">2026-03-29 14:07:00 +0200</mark>*</sub>
  * Fixed failing test when connecting via unix\_socket
* [Revision #532350d8](https://github.com/mariadb-corporation/mariadb-connector-c/commit/532350d8) <sub>*<mark style="color:$info;">2026-02-09 09:09:17 +0100</mark>*</sub>
  * Merge pull request #295 from hrw/3.4
* [Revision #d43c1ac8](https://github.com/mariadb-corporation/mariadb-connector-c/commit/d43c1ac8) <sub>*<mark style="color:$info;">2025-12-01 10:10:17 +0100</mark>*</sub>
  * mark RISC-V64 as 64-bit architecture
* [Revision #c6725bce](https://github.com/mariadb-corporation/mariadb-connector-c/commit/c6725bce) <sub>*<mark style="color:$info;">2026-02-09 08:24:43 +0100</mark>*</sub>
  * Fix for CONC-805
* [Revision #25d71253](https://github.com/mariadb-corporation/mariadb-connector-c/commit/25d71253) <sub>*<mark style="color:$info;">2026-02-09 07:59:39 +0100</mark>*</sub>
  * Merge pull request #301 from heitbaum/patch-1
* [Revision #f5143d84](https://github.com/mariadb-corporation/mariadb-connector-c/commit/f5143d84) <sub>*<mark style="color:$info;">2026-02-01 11:13:18 +1100</mark>*</sub>
  * \[CONC-805] fix assignment discards 'const' qualifier
* [Revision #0a457e2d](https://github.com/mariadb-corporation/mariadb-connector-c/commit/0a457e2d) <sub>*<mark style="color:$info;">2026-01-30 17:58:49 +0100</mark>*</sub>
  * \[misc] use DOCKER\_LOGIN as user if secret available
* [Revision #7bb4e6cd](https://github.com/mariadb-corporation/mariadb-connector-c/commit/7bb4e6cd) <sub>*<mark style="color:$info;">2026-01-23 09:27:10 +0100</mark>*</sub>
  * MDEV-37527 postfix
* [Revision #47171e34](https://github.com/mariadb-corporation/mariadb-connector-c/commit/47171e34) <sub>*<mark style="color:$info;">2026-01-21 09:34:01 +0100</mark>*</sub>
  * Merge branch '3.3' into 3.4
* [Revision #afb56859](https://github.com/mariadb-corporation/mariadb-connector-c/commit/afb56859) <sub>*<mark style="color:$info;">2025-12-16 18:58:27 +0100</mark>*</sub>
  * MDEV-37527 compile client plugins with hidden visibility
* [Revision #aece3466](https://github.com/mariadb-corporation/mariadb-connector-c/commit/aece3466) <sub>*<mark style="color:$info;">2025-10-23 11:02:18 +0200</mark>*</sub>
  * MDEV-37527 disallow unresolved symbols in dynamic plugins
* [Revision #3cdf1391](https://github.com/mariadb-corporation/mariadb-connector-c/commit/3cdf1391) <sub>*<mark style="color:$info;">2025-11-21 13:30:24 -0500</mark>*</sub>
  * bump the VERSION
* [Revision #40fc6f1a](https://github.com/mariadb-corporation/mariadb-connector-c/commit/40fc6f1a) <sub>*<mark style="color:$info;">2026-01-09 15:45:27 +0200</mark>*</sub>
  * Merge pull request #299 from gkodinov/bb-3.4-mdev-38499
* [Revision #c998d366](https://github.com/mariadb-corporation/mariadb-connector-c/commit/c998d366) <sub>*<mark style="color:$info;">2026-01-09 11:29:01 +0200</mark>*</sub>
  * MDEV-38499: cmake and compile errors on MacOSX when compiling mariadb from a git tree
* [Revision #ad30f836](https://github.com/mariadb-corporation/mariadb-connector-c/commit/ad30f836) <sub>*<mark style="color:$info;">2025-12-17 00:50:31 +0100</mark>*</sub>
  * Fix parsec linker error (missing symbols) on Windows with OpenSSL.
* [Revision #8342a1e1](https://github.com/mariadb-corporation/mariadb-connector-c/commit/8342a1e1) <sub>*<mark style="color:$info;">2025-11-21 13:31:08 -0500</mark>*</sub>
  * bump the VERSION

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