ldap_add_s - mods.mod_values empty

[Sean Ryan <ryan.sean@me.com>]

Hello, 
Firstly, I hope this is the correct list

Relevant versions:
O/S: Debian Etch (server) - Debian Lenny (client)
Slapd : OpenLDAP: slapd 2.3.30
Client libs : libldap2 (debian)

I'm seeing some problems using the ldap_add_s function call - For some reason the mods.mod_values array *appears* to be empty - slapd reports that it's missing values for the attribute type and wireshark confirms that to be the case (partial extract below).

addRequest
entry: macaddress=002145ccfadf,dc=nodomain
attributes: 2 items
Item macaddress
type: macaddress
vals: 0 items

The below is the partial source code involved.

Code : 
char  * vals[LdapDefaults::MAX_MODS][2];

ACE_DEBUG((LM_DEBUG, "(%t) Add Entry %s:%s %D \n", tempName, tempValue));
vals[loopcount][0] = new char [LdapDefaults::MAX_OPTION_LEN];
vals[loopcount][1] = 0;
opTypes[loopcount] = new char [LdapDefaults::MAX_OPTION_LEN];
mod[loopcount].mod_op = 0;
strcpy (opTypes[loopcount], tempName);
strcpy (vals[loopcount][0], tempValue);
mod[loopcount].mod_type = new char [LdapDefaults::MAX_OPTION_LEN];
strcpy (mod[loopcount].mod_type ,opTypes[loopcount]);
mod[loopcount].mod_values = vals[loopcount];

loopcount ++;
++ nvpBegin ;

  for (int counter = 0 ; counter < loopcount ; counter ++)
            {
                mods[counter] = &mod[counter];
                mods[counter]->mod_values = sn_values;
                ADA_DEBUG ((LM_DEBUG, "Value == %s\n", mods[counter]->mod_values[0]));
            }
            mods[loopcount] = 0;

errCode =  ldap_add_s(pld, tempDn , mods) ; 

addRequest
entry: macaddress=002145ccfadf,dc=nodomain
attributes: 2 items
Item macaddress
type: macaddress
vals: 0 items

There are a couple of curious things here.

1.  Assigning mod->mod_values to a statically declared array ( char *sn_values[] = { "Jensen", NULL };   mods[counter]->mod_values = sn_values;) does not change the behavior
2.  Debugging the contents of mods[i]->mod_values[0] immediately before and after the call to ldap_add_s shows that the correct values as being present in the structure.
3.  Building a standalone test application and directly linking my library produced works as expected.

Any thoughts on how to debug this further much appreciated.

Thanks
Sean