>>> Emerging : portage://sys-devel/gcc-9.5.0:run?{[]}

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

Calculating dependencies... done!

 └─step  1─┤ unmask  portage://sys-devel/gcc-9.5.0

 └─step  2─┤ download  portage://sys-devel/gcc-9.5.0
             │           └─ file ─┤ 17.47 Kb  	 gcc-9.5.0-patches-3.tar.xz
             │                    │ 69.11 Mb  	 gcc-9.5.0.tar.xz

Total: 2 actions (1 unmask, 1 download), grouped into 2 steps.
       69.12 Mb to be downloaded.


>>> Assumptions taken during proving & planning:

  Package unmask (1 package):
  Add to /etc/portage/package.unmask:
    =sys-devel/gcc-9.5.0