The following code works fine in 4.2.3, but segfaults in 4.3.0 (even though it passes the syntax check):

<?

function hi(&$aref) {
  echo $aref."\n";
}

$a="hi";
hi($a);

hi($_dummy = "hey");

?>

My configure line:

# ./configure  --with-apxs=/usr/local/apache/bin/apxs --with-java --with-pdflib=/usr/local --with-gd --w
ith-ttf --enable-trans-sid --with-curl --with-openssl --enable-sysvsem --enable-sysvshm --with-zlib --wi
th-mysql=/usr/local/mysql --with-freetype-dir=/usr --with-png-dir=/usr --with-jpeg-dir=/usr --with-gette
xt --with-imap --with-imap-ssl --with-ldap --with-kerberos --enable-ftp --with-iodbc=/usr --with-oci8 --
with-imagick --enable-xslt --with-xslt-sablot=/usr/local --with-expat-dir=/usr