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

Calculating dependencies ... done!
Dependency resolution took 1.02 s (backtrack: 0/20).

[ebuild  N     ] dev-libs/check-0.15.2-r2::gentoo  USE="-doc -subunit -test" 299 KiB
[ebuild  N     ] net-libs/libcork-0.15.0-r3::gentoo  USE="-static-libs" 179 KiB
[ebuild  N     ] net-libs/libcorkipset-1.1.1.20150311_p8-r1::gentoo  77 KiB

Total: 3 packages (3 new), Size of downloads: 554 KiB