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

Calculating dependencies ... done!
Dependency resolution took 0.96 s (backtrack: 0/20).

[ebuild  N     ] dev-util/vtable-dumper-1.2-r1::gentoo  16 KiB
[ebuild  N     ] dev-util/abi-dumper-1.4::gentoo  48 KiB

Total: 2 packages (2 new), Size of downloads: 63 KiB