[Bug bootstrap/54419] [4.8 Regression] Compiling libstdc++-v3/src/c++11/random.cc fails on platforms not knowing rdrand

[howarth at nitro dot med.uc.edu]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54419

--- Comment #38 from Jack Howarth <howarth at nitro dot med.uc.edu> 2012-09-06 
14:04:11 UTC ---
Created attachment 28140
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28140
revised patch tested against clang on darwin12