Description of problem:
The httpAddrGetList() function from libcups (cups-1.2.1/cups/http-addrlist.c) is
miscompiled at -O2.  The symptom is that
httpAddrGetList("localhost",AF_UNSPEC,"631") fails to return an address when
/etc/hosts looks like this:

# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1               primary
127.0.0.1               localhost.localdomain

There is code in httpAddrGetList() specifically to handle such a misconfigured
/etc/hosts, but it is not getting triggered because an automatic local variable
(addr) is not getting correctly initialized.

Version-Release number of selected component (if applicable):
gcc-4.1.0-3, also
gcc-4.1.0-17

How reproducible:
100%

Steps to Reproduce:

1. Back up /etc/hosts

2.

cat >/etc/hosts <<"EOF"
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1               primary
127.0.0.1               localhost.localdomain
EOF 

gcc -g -O2 -o http-addrlist http-addrlist.c
./http-addrlist

Actual results:
failure

Expected results:
success

Additional info:
Original bug report is bug #192628.