let sym = token::gensym("vtable");
let buf = CString::from_vec(format!("vtable{}", sym.uint()).into_bytes());
let vt_gvar = llvm::LLVMAddGlobal(ccx.llmod(), val_ty(tbl).to_ref(),
let sym = token::gensym("vtable");
let buf = CString::from_vec(format!("vtable{}", sym.uint()).into_bytes());
let vt_gvar = llvm::LLVMAddGlobal(ccx.llmod(), val_ty(tbl).to_ref(),