in /client/dbclient.cpp DBClientConnection& DBClientPaired::checkMaster() (ln 918), function is set as inline. This causes the checkMaster() function to be omitted from mongodbclient.a, the inline should be on the prototype in the header.

The knock on effect of this is that it is impossible to use DBClientPaired without a linking error.

Furthermore with a short amount of testing, (after removing the inline and rebuilding), I have been unable to use DBClientPaired successfully, as it seems to attempt to send data to the slave instead of the master. In fact I wonder why it requires the addresses of both members of the pair. Surely it should only require one, and transparently consult the server to determine which address the master is residing at?

I will investigate this further later to see if I can add anything useful.