[Bug lto/53768] [4.7 Regression] Undefined references with boost 1.46/1.48/1.49

[vincenzo.innocente at cern dot ch]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53768

--- Comment #12 from vincenzo Innocente <vincenzo.innocente at cern dot ch> 
2012-06-30 15:25:27 UTC ---
reduced testcase for comment 7&8 regression as PR53821