pub unsafe extern "C" fn nix_external_add_string_context(
context: *mut nix_c_context,
string_context: *mut nix_string_context,
c: *const c_char,
) -> nix_err
pub unsafe extern "C" fn nix_external_add_string_context(
context: *mut nix_c_context,
string_context: *mut nix_string_context,
c: *const c_char,
) -> nix_err