警告：赋值时将整数赋给指针，未作类型转换

Unixell

小声的问一句，我编译在http://developer.novell.com/documentation/samplecode/cldap_sample/index.htm上的例子程序，编译的时候使用 gcc -lldap veriPassword.c 出现一个警告
veriPassword.c:45: 警告：赋值时将整数赋给指针，未作类型转换
就是if ((ld = ldap_init (ldapHost, ldapPort)) == NULL)
我man了一下ldap_init 返回值是LDAP*啊

请哪位帮我看看 问题处在哪了？多谢

#include <stdio.h> #include <stdlib.h> #include <ldap.h> static char usage[] =   "\n Usage:   verpass <host name> <port number> <login dn> <password>"   "\n          <object dn> <test password>\n"   "\n Example: verpass Acme.com 389 cn=admin,o=Acme secret"   "\n          cn=james,ou=Sales,o=Acme testpass\n"; int main (int argc, char *argv[]) {   LDAP *ld;   int version, ldapPort, rc;   char *ldapHost, *loginDN, *password, *objectDN, *testPassword;   struct timeval timeOut = { 10, 0 };    /* 10 second connection timeout */ if (argc != 7)     {       printf ("%s", usage);       return (1);     }   ldapHost = argv[1];   ldapPort = atoi (argv[2]);   loginDN = argv[3];   password = argv[4];   objectDN = argv[5];   testPassword = argv[6];   /* Set LDAP version to 3 and set connection timeout. */   ldap_set_option (NULL, LDAP_OPT_PROTOCOL_VERSION, &version);   ldap_set_option (NULL, LDAP_OPT_NETWORK_TIMEOUT, &timeOut);   /* Initialize the LDAP session */   if ((ld = ldap_init (ldapHost, ldapPort)) == NULL)     {       printf ("\n\tLDAP session initialization failed\n");       return (1);     }   printf ("\n\tLDAP session initialized\n");   /* Bind to the server */   rc = ldap_simple_bind_s (ld, loginDN, password);   if (rc != LDAP_SUCCESS)     {       printf ("ldap_simple_bind_s: %s\n", ldap_err2string (rc));       ldap_unbind_s (ld);       return (1);     }   printf ("\n\tBind successful\n");   /*    * Compare the test password with the userPassword attribute    * of the object.    */   rc = ldap_compare_s (ld,    /* LDAP session handle */                objectDN,    /* the object to verify password on */                "userPassword",    /* attribute to compare */                testPassword);    /* the password to verify */   if (rc == LDAP_COMPARE_TRUE)     printf ("\n\tThe password is correct.\n");   else if (rc == LDAP_COMPARE_FALSE)     printf ("\n\tThe password is not correct.\n");   else     {       printf ("\n\tldap_compare_s: %s\n", ldap_err2string (rc));       ldap_unbind_s (ld);       return (1);     }   ldap_unbind_s (ld);   return (0);   return 0; }