Compilation of MariaDB 10.11.8 fails on x32, sizeof(MYSQL) is wrong

[ 67%] Building C object tests/CMakeFiles/mariadb-client-test.dir/mysql_client_test.c.o

cd /<<PKGBUILDDIR>>/builddir/tests && /usr/bin/cc -DHAVE_CONFIG_H -DMYSQL_CLIENT -D_FILE_OFFSET_BITS=64 -I/<<PKGBUILDDIR>>/libmariadb/include -I/<<PKGBUILDDIR>>/builddir/libmariadb/include -I/<<PKGBUILDDIR>>/wsrep-lib/include -I/<<PKGBUILDDIR>>/wsrep-lib/wsrep-API/v26 -I/<<PKGBUILDDIR>>/builddir/include -I/<<PKGBUILDDIR>>/include/providers -I/<<PKGBUILDDIR>>/include -I/<<PKGBUILDDIR>>/client -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/<<PKGBUILDDIR>>=. -specs=/usr/share/dpkg/pie-compile.specs -fstack-protector-strong -Wformat -Werror=format-security -fcf-protection -Wdate-time -D_FORTIFY_SOURCE=2 -Wdate-time -D_FORTIFY_SOURCE=2 -pie -fPIC -fstack-protector --param=ssp-buffer-size=4 -O2 -g -static-libgcc -fno-omit-frame-pointer -fno-strict-aliasing  -Wno-uninitialized -fno-omit-frame-pointer -D_FORTIFY_SOURCE=2 -DDBUG_OFF -Wall -Wdeclaration-after-statement -Wenum-compare -Wenum-conversion -Wextra -Wformat-security -Wmissing-braces -Wno-format-truncation -Wno-init-self -Wno-nonnull-compare -Wno-unused-parameter -Wvla -Wwrite-strings -std=gnu99   -Wdate-time -D_FORTIFY_SOURCE=2 -MD -MT tests/CMakeFiles/mariadb-client-test.dir/mysql_client_test.c.o -MF CMakeFiles/mariadb-client-test.dir/mysql_client_test.c.o.d -o CMakeFiles/mariadb-client-test.dir/mysql_client_test.c.o -c /<<PKGBUILDDIR>>/tests/mysql_client_test.c

In file included from /<<PKGBUILDDIR>>/tests/mysql_client_fw.c:16,

                 from /<<PKGBUILDDIR>>/tests/mysql_client_test.c:38:

/<<PKGBUILDDIR>>/tests/mysql_client_fw.c: In function ‘main’:

/<<PKGBUILDDIR>>/include/my_global.h:384:18: error: size of array ‘compile_time_assert’ is negative

  384 |     typedef char compile_time_assert[(X) ? 1 : -1] __attribute__((unused)); \

      |                  ^~~~~~~~~~~~~~~~~~~

/<<PKGBUILDDIR>>/tests/mysql_client_fw.c:1442:3: note: in expansion of macro ‘compile_time_assert’

 1442 |   compile_time_assert(sizeof(MYSQL) == 1272);

      |   ^~~~~~~~~~~~~~~~~~~

make[4]: *** [tests/CMakeFiles/mariadb-client-test.dir/build.make:79: tests/CMakeFiles/mariadb-client-test.dir/mysql_client_test.c.o] Error 1

make[4]: Leaving directory '/<<PKGBUILDDIR>>/builddir'

make[3]: *** [CMakeFiles/Makefile2:10668: tests/CMakeFiles/mariadb-client-test.dir/all] Error 2