I have a linux 2.2.x with the following configuration:
GLIBC 2.2.3
OpenLDAP 2.0.11 (with SSL)
imap-2000c (with SSL)
Apache 1.3.19 (with SSL enabled by default)

When I load imap and ldap modules of PHP4, Apache coredumps.

PHP4's configure:
./configure \
        --prefix=%{_prefix} --disable-debug --enable-pic
--enable-inline-optimization \
        --with-apxs=%{_sbindir}/apxs --enable-shared 
--disable-static \
        --with-config-file-path=%{_sysconfdir}/php4/apache
        --with-exec-dir=%{_bindir} --with-regex=system
--with-gettext --with-freetype-dir=%{_prefix} \
        --with-gd --with-jpeg-dir=%{_prefix} --with-png
--with-zlib --with-db2 --with-db3 \
        --with-gdbm --enable-debugger --enable-openssl
--enable-magic-quotes --enable-safe-mode \
        --enable-sockets  --enable-sysvsem --enable-sysvshm
--enable-track-vars \
        --enable-yp --enable-wddx --enable-snmp --enable-dbf \
        --enable-ftp --enable-mcrypt --enable-bcmath
--without-mysql \
        --without-unixODBC --enable-debug --with-xml

imap and ldap runtime modules are build with:
build_ext() {
%{__cc} -fPIC -shared %{optflags} \
        -DCOMPILE_DL_`echo $1 | tr '[a-z]' '[A-Z]'` \
        -DHAVE_`echo $1 | tr '[a-z]' '[A-Z]'` \
        -I. -I./main -I`%{_sbindir}/apxs -q INCLUDEDIR`
-I./Zend \
        -I%{_includedir}/freetype -I%{_includedir}/$1 \
        -I./ext/$1 -I./ext/$1/lib$1 \
        -I./ext/xml/expat/xmltok -I./ext/xml/expat/xmlparse \
        -I./TSRM \
        `grep ^CPPFLAGS Zend/Makefile | cut -f2- -d=` \
        $4 $2 -o $1.so -L.libs $3 -lc
    }

build_ext imap ext/imap/php_imap.c "-limap" "-DHAVE_IMAP2000
-DHAVE_IMAP_SSL"
build_ext ldap ext/ldap/ldap.c "-lldap -llber"

Apache doesnt coredumps if I load only php4-imap or only
php4-ldap
modules (php4 cgi version works).

Anybody have any clue for that?