[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 #6 from vincenzo Innocente <vincenzo.innocente at cern dot ch> 
2012-06-29 06:09:19 UTC ---
the backport seems to work for my test cases.
Side effects need to be verified