fulltest2:

/home/buildbot/buildbot/build/mariadb-11.7.0/strings/ctype-mb.c: In function ‘my_strnxfrm_mb_internal’:
/home/buildbot/buildbot/build/mariadb-11.7.0/strings/ctype-mb.c:504:47: error: signed and unsigned type in conditional expression [-Werror=sign-compare]
       size_t len= (dst + chlen <= de) ? chlen : de - dst;

/home/buildbot/buildbot/build/mariadb-11.7.0/strings/ctype-utf8.c: In function ‘my_strnxfrm_unicode_full_bin’:
/home/buildbot/buildbot/build/mariadb-11.7.0/strings/ctype-utf8.c:318:20: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
     if ((de - dst) < nweights * 3)