byuu@debian:~$ sudo apt-get install gcc-4.6
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 libglib2.0-0 : Breaks: gnome-control-center (< 1:3) but 1:2.30.1-2 is to be installed
 network-manager : Breaks: network-manager-gnome (< 0.9) but 0.8.1-2 is to be installed
E: Broken packages
byuu@debian:~$ sudo apt-cache policy gcc-4.6
gcc-4.6:
  Installed: (none)
  Candidate: 4.6.2-4
  Version table:
     4.6.2-4 0
        500 http://ftp.us.debian.org/debian/ wheezy/main amd64 Packages
byuu@debian:~$