Gentoo's Bugzilla –
Attachment 316143 Details for
Bug 423311sci-physics/fastjet-3.0.2 with gcc-4.7.1 - .../work/fastjet-3.0.2/plugins/D0RunIICone/ILConeAlgorithm.hpp:340:3: error: 'addItem' was not declared in this scope, and no declarations were found by argument-dependent lookup at the point of instantiation[...