Gentoo's Bugzilla –
Attachment 349970 Details for
Bug 471460=x11-misc/piedock-1.6.2[gtk,-kde] - Png.cpp: In static member function 'static PieDock::ArgbSurface* PieDock::Png::load(std::istream&)': Png.cpp:91:27: error: 'memcpy' was not declared in this scope