http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51406
--- Comment #7 from Uros Bizjak <ubizjak at gmail dot com> 2011-12-17 07:28:59 UTC --- The testcases use "target c++11" target selector. This selector is not known on 4.6 and earler branches. The testcases fail as following on 4.6 branch [1]: Running target unix ERROR: g++.dg/cpp0x/rv-cast3.C: syntax error in target selector "target c++11" for " dg-do 2 run { target c++11 } " UNRESOLVED: g++.dg/cpp0x/rv-cast3.C: syntax error in target selector "target c++11" for " dg-do 2 run { target c++11 } " ERROR: g++.dg/cpp0x/rv-cast4.C: syntax error in target selector "target c++11" for " dg-do 2 compile { target c++11 } " UNRESOLVED: g++.dg/cpp0x/rv-cast4.C: syntax error in target selector "target c++11" for " dg-do 2 compile { target c++11 } " [1] http://gcc.gnu.org/ml/gcc-testresults/2011-12/msg01771.html