------- Comment #1 from pinskia at gcc dot gnu dot org 2010-02-02 01:14 ------- Well RUNTESTFLAGS is really only useful for options which change the ABI and have a multilib. Like -fPIC/-m64/-m32, etc. -std=c++0x changes the input language which is used so therefor changes the whole testsuite.
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42933
