http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50758
--- Comment #6 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-10-17 19:40:06 UTC --- > The warning is not bogus when you are compiling with --disable-checking > or when your GCC_VERSION is < 2007. ... I am using ../work/configure --prefix=/opt/gcc/gcc4.7w --enable-languages=c,c++,fortran,objc,obj-c++,java,ada,lto --with-gmp=/opt/sw64 --with-libiconv-prefix=/opt/sw64 --with-system-zlib --with-cloog=/opt/sw64 --enable-cloog-backend=isl --enable-lto so no --disable-checking and the bootstrap gcc is configure:4007: gcc --version >&5 gcc (GCC) 4.5.3 20110419 for GNAT GPL 2011 (20110419) What am I missing?