http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48480
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-04-06 14:58:45 UTC --- > ... Could you please try the following command instead? ... This fixes the failure: i.e., running make -k check RUNTESTFLAGS="--target_board=unix'{-m32,-m64}'" in x86_64-apple-darwin10.7.0/boehm-gc/testsuite, yields === boehm-gc Summary === # of expected passes 24 # of unsupported tests 2 Thanks.