[fetchmail]driver.c:835: warning: assignment makes pointer from integer

I tried to compile fetchmail-5.9.4, but it failed with the following:
    gcc -DHAVE_CONFIG_H  -DLOCALEDIR=\"/usr/local/share/locale\" -c  -I. -I.
    -I./intl -I./intl -DHESIOD -I/usr/include -O driver.c
    driver.c: In function `do_session':
    driver.c:835: warning: assignment makes pointer from integer without a cast
    driver.c:836: dereferencing pointer to incomplete type
    driver.c:838: dereferencing pointer to incomplete type
    driver.c:841: dereferencing pointer to incomplete type
    *** Error code 1

OS:                 NetBSD 1.4.3_ALPHA
compiler:           gcc version egcs-2.91.60 19981201 (egcs-1.1.1 release)
make:               GNU Make version 3.79.1  (same with /usr/bin/make)
configure options:  --enable-fallback=sendmail --disable-nls

Fetchmail-5.9.0 failed the same way in fetchmail.c at pretty much the same
code.  Is this a known problem?  Is there a simple fix?  Not on the list,
so kindly cc to henry(_at_)irm(_dot_)nara(_dot_)kindai(_dot_)ac(_dot_)jp(_dot_) 
 TIA.

henry nelson

[fetchmail]driver.c:835: warning: assignment makes pointer from integer without