Description of problem:

A WINS name lookup fails if libnetsnmp.so is loaded - it causes an application exit with the error message "ERROR: memdup failed".

Version-Release number of selected component (if applicable):

samba-winbind-clients-4.0.8-1.fc19.i686
Any Net-SNMP version.

How reproducible:

100%

Steps to Reproduce:
1. Edit /etc/nsswitch.conf. Change the "hosts: files dns" line into "hosts: files wins dns"
2. Download the Net-SNMP source code, build it and run its regression tests:
git clone git://git.code.sf.net/p/net-snmp/code net-snmp &&
cd net-snmp &&
./configure --with-defaults &&
make &&
rm -rf /tmp/snmp-test-* &&
make test

Actual results:

We failed these 1 tests:
  com2sec directive ( /home/bart/software/net-snmp/testing/fulltests/default/T070com2sec_simple )

cat /tmp/snmp-test-T070com2sec_simple-*/snmpd.log.stdout 
ERROR: memdup failed

Expected results:

Library functions to report memory allocation failures to the caller instead of calling exit(1).
All Net-SNMP regression tests pass.

Note: the root cause of this is probably that the libnss_wins function load_interfaces() calls memdup() and that the loader redirects this call to the Net-SNMP definition of memdup() instead of the libnss_wins version of memdup().