uintptr           177 include/u.h    typedef uintptr_t uintptr;
uintptr            14 src/pkg/runtime/cgo/libcgo.h typedef uintptr_t uintptr;
uintptr            20 src/pkg/runtime/runtime.h typedef	uint64		uintptr;
uintptr            25 src/pkg/runtime/runtime.h typedef	uint32		uintptr;