These are the packages that would be merged, in order:

Calculating dependencies ... done!
Dependency resolution took 0.95 s (backtrack: 0/20).

[ebuild  N     ] dev-util/cppunit-1.15.1-r3:0/1.15::gentoo  USE="-doc -examples" 796 KiB

Total: 1 package (1 new), Size of downloads: 796 KiB