This is my fork of GCC with all of my exception handling stuff. It also contains the standard C++ library, which means you can just write normal(ish) C++.

#include <vector>
#include <cstdio>

int main(){
  printf("hello world!\n");
  std::vector v = {1,2,3,4};
  for(int i : v){
    printf("i: %d\n", i);
  }
}

The fork is here, but you can download the full compiled toolchain here since it requires a forked binutils as well.

Caveats

Currently, iostreams is known to be too large to fit in most devices because of floating point conversion functions. Locale also is left unimplemented.