5.1-micro no longer compiles properly

ccache gcc -DDEFAULT_BASEDIR=\"/usr/local/mysql\" -DMYSQL_DATADIR="\"/usr/local/mysql/var\"" -DDEFAULT_CHARSET_HOME="\"/usr/local/mysql\"" -DSHAREDIR="\"/usr/local/mysql/share/mysql\"" -DDEFAULT_HOME_ENV=MYSQL_HOME -DDEFAULT_GROUP_SUFFIX_ENV=MYSQL_GROUP_SUFFIX -DDEFAULT_SYSCONFDIR="\"/usr/local/mysql/etc\"" -DHAVE_CONFIG_H -I. -I../include -I../include -I../include -I. -Wall -Wextra -Wunused -Wwrite-strings -Wno-strict-aliasing -Werror -Wdeclaration-after-statement -g -DSAFE_MUTEX -DSAFEMALLOC -Wall -Wextra -Wunused -Wwrite-strings -mtune=native -DUNIV_MUST_NOT_INLINE -DEXTRA_DEBUG -DFORCE_INIT_OF_VARS -DSAFEMALLOC -DPEDANTIC_SAFEMALLOC -DSAFE_MUTEX -DUNIV_LINUX -DUNIV_LINUX -MT my_file.o -MD -MP -MF .deps/my_file.Tpo -c -o my_file.o my_file.c
cc1: warnings being treated as errors
mf_getdate.c: In function ‘get_date’:
mf_getdate.c:45: error: signed and unsigned type in conditional expression

[philips@eve mysql-5.1-micro-pristine]$ bzr version-info
revision-id: <email address hidden>
date: 2011-03-29 14:48:48 +0200
build-date: 2011-04-03 17:25:53 +0300
revno: 3568
branch-nick: mysql-5.1-micro-pristine

[philips@eve mysql-5.1-micro-pristine]$ uname -a
Linux eve 2.6.33.3-85.fc13.i686.PAE #1 SMP Thu May 6 18:27:11 UTC 2010 i686 i686 i386 GNU/Linux

[philips@eve mysql-5.1-micro-pristine]$ gcc --version
gcc (GCC) 4.4.5 20101112 (Red Hat 4.4.5-2)