debian:/home/dnanar# aptitude install gcc
Reading package lists... Done
Building dependency tree... Done
Reading extended state information
Initializing package states... Done
Writing extended state information... Done
Reading task descriptions... Done
Building tag database... Done
The following packages are BROKEN:
  libc6-dev
The following NEW packages will be automatically installed:
  binutils gcc-4.1 libmudflap0 libmudflap0-dev linux-kernel-headers
The following NEW packages will be installed:
  binutils gcc gcc-4.1 libmudflap0 libmudflap0-dev linux-kernel-headers
0 packages upgraded, 7 newly installed, 0 to remove and 0 not upgraded.
Need to get 8029kB of archives. After unpacking 32.1MB will be used.
The following packages have unmet dependencies:
  libc6-dev: Depends: libc6 (= 2.3.6.ds1-13) but 2.5-2 is installed.
Resolving dependencies...
The following actions will resolve these dependencies:

Keep the following packages at their current version:
libc6-dev [Not Installed]
libmudflap0-dev [Not Installed]

Leave the following dependencies unresolved:
gcc recommends libc6-dev | libc-dev
gcc-4.1 recommends libc6-dev (>= 2.3.6-7)
gcc-4.1 recommends libmudflap0-dev (>= 4.1.1-21)
Score is -532

Accept this solution? [Y/n/q/?] q
Abandoning all efforts to resolve these dependencies.
Abort.


debian:/home/dnanar# aptitude upgrade libc6-dev libc6
Reading package lists... Done
Building dependency tree... Done
Reading extended state information
Initializing package states... Done
Reading task descriptions... Done
Building tag database... Done
No packages will be installed, upgraded, or removed.
0 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 0B of archives. After unpacking 0B will be used.
debian:/home/dnanar#