http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57463
--- Comment #3 from MengHuan Yu <cebrusfs at gmail dot com> --- Using built-in specs. COLLECT_GCC=g++ COLLECT_LTO_WRAPPER=/usr/local/Cellar/gcc47/4.7.3/gcc/libexec/gcc/x86_64-apple-darwin11.4.2/4.7.3/lto-wrapper Target: x86_64-apple-darwin11.4.2 Configured with: ../configure --build=x86_64-apple-darwin11.4.2 --prefix=/usr/local/Cellar/gcc47/4.7.3/gcc --datarootdir=/usr/local/Cellar/gcc47/4.7.3/share --bindir=/usr/local/Cellar/gcc47/4.7.3/bin --enable-languages=c,c++,fortran,java,objc,obj-c++ --program-suffix=-4.7 --with-gmp=/usr/local/opt/gmp --with-mpfr=/usr/local/opt/mpfr --with-mpc=/usr/local/opt/libmpc --with-system-zlib --enable-stage1-checking --enable-plugin --enable-lto --disable-werror --disable-nls --with-ecj-jar=/usr/local/opt/ecj/share/java/ecj.jar --disable-multilib Thread model: posix gcc version 4.7.3 (GCC)