sys-block/gparted-0.25.0 fails to build. The build.log and emerge --info are below Reproducible: Always
Created attachment 424482 [details] build.log
Created attachment 424484 [details] emerge --info
It works for me. To me the ebuild seems fine. May be you have to rebuild libraries after upgrading gcc or other packages? You should find help in the wiki, forums and IRC.