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

Calculating dependencies ... done!
Dependency resolution took 1.52 s (backtrack: 0/20).

[ebuild     U  ] dev-libs/libpcre2-10.49:0/3::gentoo [10.47:0/3::gentoo] USE="bzip2 jit pcre16 pcre32 readline unicode zlib -libedit -static-libs -valgrind -verify-sig" 2135 KiB

Total: 1 package (1 upgrade), Size of downloads: 2135 KiB