diff --git a/mariadb-debug_build.patch b/mariadb-debug_build.patch
deleted file mode 100644
index e3cfc69..0000000
--- a/mariadb-debug_build.patch
+++ /dev/null
@@ -1,28 +0,0 @@
-Remove the '-Werror' GCC compilation flag, so the debug build compilation won't crash on random warnings.
-
-'-Werror' is not your friend:
-https://embeddedartistry.com/blog/2017/5/3/-werror-is-not-your-friend
-
---- mariadb-10.3.17/cmake/maintainer.cmake	2019-07-28 02:18:30.000000000 +0200
-+++ mariadb-10.3.17/cmake/maintainer.cmake_patched	2019-09-03 13:41:49.082088685 +0200
-@@ -33,7 +33,6 @@ SET(MY_WARNING_FLAGS
-   -Wnon-virtual-dtor
-   -Wvla
-   -Wwrite-strings
--  -Werror
-   )
- 
- IF(CMAKE_COMPILER_IS_GNUCC AND CMAKE_C_COMPILER_VERSION VERSION_LESS "6.0.0")
---- mariadb-10.3.17/storage/tokudb/PerconaFT/cmake_modules/TokuSetupCompiler.cmake	2019-07-28 02:18:32.000000000 +0200
-+++ mariadb-10.3.17/storage/tokudb/PerconaFT/cmake_modules/TokuSetupCompiler.cmake_patched	2019-09-03 13:53:51.813324055 +0200
-@@ -163,8 +163,8 @@ if (NOT CMAKE_CXX_COMPILER_ID STREQUAL C
- endif ()
- 
- ## always want these in debug builds
--set(CMAKE_C_FLAGS_DEBUG "-Wall -Werror ${CMAKE_C_FLAGS_DEBUG}")
--set(CMAKE_CXX_FLAGS_DEBUG "-Wall -Werror ${CMAKE_CXX_FLAGS_DEBUG}")
-+set(CMAKE_C_FLAGS_DEBUG "-Wall ${CMAKE_C_FLAGS_DEBUG}")
-+set(CMAKE_CXX_FLAGS_DEBUG "-Wall ${CMAKE_CXX_FLAGS_DEBUG}")
- 
- # pick language dialect
- set(CMAKE_C_FLAGS "-std=c99 ${CMAKE_C_FLAGS}")
diff --git a/mariadb.spec b/mariadb.spec
index ca6c53f..2af4469 100644
--- a/mariadb.spec
+++ b/mariadb.spec
@@ -11,7 +11,7 @@
 # The last version on which the full testsuite has been run
 # In case of further rebuilds of that version, don't require full testsuite to be run
 # run only "main" suite
-%global last_tested_version 10.4.11
+%global last_tested_version 10.4.12
 # Set to 1 to force run the testsuite even if it was already tested in current version
 %global force_run_testsuite 0
 
@@ -147,7 +147,7 @@
 
 Name:             mariadb
 Version:          10.4.12
-Release:          1%{?with_debug:.debug}%{?dist}
+Release:          3%{?with_debug:.debug}%{?dist}
 Epoch:            3
 
 Summary:          A very fast and robust SQL database server
@@ -195,8 +195,6 @@ Patch10:          %{pkgnamepatch}-ssl-cipher-tests.patch
 Patch11:          %{pkgnamepatch}-pcdir.patch
 #   Patch13: Fix Spider code on armv7hl; https://jira.mariadb.org/browse/MDEV-18737
 Patch13:          %{pkgnamepatch}-spider_on_armv7hl.patch
-#   Patch14: Remove the '-Werror' flag so the debug build won't crash on random warnings
-Patch14:          %{pkgnamepatch}-debug_build.patch
 #   Patch15:  Add option to edit groonga's and groonga-normalizer-mysql install path
 Patch15:          %{pkgnamepatch}-groonga.patch
 #   Patch16: Workaround for "chown 0" with priviledges dropped to "mysql" user
@@ -677,6 +675,8 @@ sources.
 # Remove JAR files that upstream puts into tarball
 find . -name "*.jar" -type f -exec rm --verbose -f {} \;
 
+rm -rf libmariadb/unittest
+
 %patch2 -p1
 %patch4 -p1
 %patch7 -p1
@@ -684,7 +684,6 @@ find . -name "*.jar" -type f -exec rm --verbose -f {} \;
 %patch10 -p1
 %patch11 -p1
 %patch13 -p1
-%patch14 -p1
 %patch15 -p1
 %patch16 -p1
 
@@ -766,15 +765,29 @@ CFLAGS="$CFLAGS -fPIC"
 
 %if %{with debug}
 # Override all optimization flags when making a debug build
-CFLAGS="$CFLAGS -O0 -g"
-CPPFLAGS="$CPPFLAGS -O0 -g -D_FORTIFY_SOURCE=0"
-# Fix GCC flags broken by MariaDB upstream
-CFLAGS="$CFLAGS      -Wno-error=deprecated-copy -Wno-error=pessimizing-move -Wno-error=unused-result -Wno-error=maybe-uninitialized -Wno-error=stringop-overflow -Wno-error=sign-compare"
-CPPFLAGS="$CPPFLAGS  -Wno-error=deprecated-copy -Wno-error=pessimizing-move -Wno-error=unused-result -Wno-error=maybe-uninitialized -Wno-error=stringop-overflow -Wno-error=sign-compare"
-%endif
+# -D_FORTIFY_SOURCE requires optimizations enabled. Disable the fortify.
+CFLAGS=`echo "$CFLAGS" | sed -r 's/-D_FORTIFY_SOURCE=[012]/-D_FORTIFY_SOURCE=0/'`
+CFLAGS=`echo "$CFLAGS" | sed -r 's/-O[0123]//'`
+
+CFLAGS="$CFLAGS -O0 -g -D_FORTIFY_SOURCE=0"
+
+# Fixes for Fedora 32 & Rawhide (GCC 10.0):
+%if 0%{?fedora} >= 32
+CFLAGS="$CFLAGS -Wno-error=class-memaccess"
+%endif # f32
+
+%endif # debug
 
 CXXFLAGS="$CFLAGS"
 CPPFLAGS="$CFLAGS"
+
+# CFLAGS specific "-Wno-error"
+%if %{with debug}
+%if 0%{?fedora} >= 32
+CFLAGS="$CFLAGS -Wno-error=enum-conversion"
+%endif # f32
+%endif # debug
+
 export CFLAGS CXXFLAGS CPPFLAGS
 
 
@@ -1559,6 +1572,13 @@ fi
 %endif
 
 %changelog
+* Mon Mar 16 2020 Michal Schorm <mschorm@redhat.com> - 10.4.12-3
+- Rebase mariadb-connector-c git submodule to commit fbf1db6
+  For fix: https://jira.mariadb.org/browse/CONC-441
+
+* Tue Mar 10 2020 Michal Schorm <mschorm@redhat.com> - 10.4.12-2
+- Update the fix for building in the debug mode
+
 * Thu Feb 06 2020 Michal Schorm <mschorm@redhat.com> - 10.4.12-1
 - Rebase to 10.4.12
 
diff --git a/sources b/sources
index e1aa5e9..5a2560f 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (mariadb-10.4.12.tar.gz) = 518dae18c04a1f7fcc6fd4d2dfbfbfbdf5e83e72ca41e66e1074328df8d92ab41b458e6a9973771419ac09a7348f264f158916cd198c335085d6e823e707bbc6
+SHA512 (mariadb-10.4.12.tar.gz) = f26c45bbab765c979bbdb748da10ee314c1494e2ad7df7523bf4020b5f5036c06242739c1877fa0a21defcdd27f498cfff730289486ce9ced09d5740f3594657