[Bug tree-optimization/50415] [4.7 Regression] gfortran -Ofast SIGSEGV in find_uses_to_rename_use

[dominiq at lps dot ens.fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50415

--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-09-15 
11:30:14 UTC ---
> This is a regression that occurred in the same range as pr50414 (between
> revisions 173852 (OK) and 175707 (ICE)).

r174030 is OK
r174283 gives the ICE.