http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53282
--- Comment #2 from vincenzo Innocente <vincenzo.innocente at cern dot ch> 2012-05-08 14:01:27 UTC --- understood why it is related to the order of the input files. Still that particular symbol shall not be hidden. I've a library with 307 of those symbols, and lto hides only 7 of them!