__attribute__ vs c++

[nbecker@fred.net]

egcs-1.1a i686-pc-linux-gnu.

bug.cc:
class A {
  const int x;
  int X () const __attribute__((const)) {
    return x;
  }
};

gcc -c bug.cc
bug.cc:3: parse error before `{'

Is __attribute__ not usable for methods?