[Bug fortran/52668] [4.7/4.8 Regression] Incorrect unused warning for USE associating variable in common block

[arnaud02 at users dot sourceforge.net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52668

--- Comment #2 from Arnaud Desitter <arnaud02 at users dot sourceforge.net> 
2012-04-04 09:42:47 UTC ---
The patch posted at http://gcc.gnu.org/ml/fortran/2012-03/msg00124.html fixes
the problem.