I have an extremely simple c++ program:

////////////////////////////
#include <iostream>
using namespace std;

int main(int argc, char* argv[])
{
cout << "Hello from gcc" << endl;
return 0;
}
////////////////////////////

Which will not compile on AIX 5.2 using GCC. The error message is:

/usr/include/sys/context.h:169: error: 'sigset64_t' is used as a type,
but is not defined as a type.

I have tried a multitude of command line options for g++ but none
work. GCC is version 3.3.

Any help would be GREATLY appreciated.
Andrew Pierce