Broken g++ build using -m32

$ g++ -v -m32 limits.cpp
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: /build/src/gcc-4.7-20120505/configure --prefix=/usr --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=https://bugs.archlinux.org/ --enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared --enable-threads=posix --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch --enable-libstdcxx-time --enable-gnu-unique-object --enable-linker-build-id --with-ppl --enable-cloog-backend=isl --enable-lto --enable-gold --enable-ld=default --enable-plugin --with-plugin-ld=ld.gold --with-linker-hash-style=gnu --disable-multilib --disable-libssp --disable-build-with-cxx --disable-build-poststage1-with-cxx --enable-checking=release
Thread model: posix
gcc version 4.7.0 20120505 (prerelease) (GCC)
COLLECT_GCC_OPTIONS='-v' '-m32' '-shared-libgcc' '-mtune=generic' '-march=x86-64'
 /usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/cc1plus -quiet -v -imultilib . -D_GNU_SOURCE limits.cpp -quiet -dumpbase limits.cpp -m32 -mtune=generic -march=x86-64 -auxbase limits -version -o /tmp/ccXxnVew.s
GNU C++ (GCC) version 4.7.0 20120505 (prerelease) (x86_64-unknown-linux-gnu)
        compiled by GNU C version 4.7.0 20120505 (prerelease), GMP version 5.0.4, MPFR version 3.1.0-p7, MPC version 0.9
warning: GMP header version 5.0.4 differs from library version 5.0.5.
warning: MPFR header version 3.1.0-p7 differs from library version 3.1.0-p10.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory "/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../x86_64-unknown-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../include/c++/4.7.0
 /usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../include/c++/4.7.0/x86_64-unknown-linux-gnu/.
 /usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../include/c++/4.7.0/backward
 /usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/include
 /usr/local/include
 /usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/include-fixed
 /usr/include
End of search list.
GNU C++ (GCC) version 4.7.0 20120505 (prerelease) (x86_64-unknown-linux-gnu)
        compiled by GNU C version 4.7.0 20120505 (prerelease), GMP version 5.0.4, MPFR version 3.1.0-p7, MPC version 0.9
warning: GMP header version 5.0.4 differs from library version 5.0.5.
warning: MPFR header version 3.1.0-p7 differs from library version 3.1.0-p10.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 56bd007f78bbc0a60cfee1599a0ed3f7
In file included from limits.cpp:1:0:
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../include/c++/4.7.0/limits:1405:35: error: template argument 1 is invalid
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../include/c++/4.7.0/limits:1479:44: error: template argument 1 is invalid