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// the following code triggers a failed assertion in g++ 2.3.1

class BaseVector {
public:
		BaseVector ();
		~BaseVector ();
};

template <class T> class Vector : public BaseVector {
public:
inline		Vector () : BaseVector () {}
};

class A;
class B;

typedef Vector <A> AVector;
typedef Vector <B> BVector;

// % g++ -v -c foo.cc
// Reading specs from /usr/local/lib/gcc-lib/sun4/2.3.1/specs
// gcc version 2.3.1
//  /usr/local/lib/gcc-lib/sun4/2.3.1/cpp -lang-c++ -v -undef -D__GNUC__=2 -D__GNUG__=2 -D__cplusplus -Dsparc -Dsun -Dunix -D__sparc__ -D__sun__ -D__unix__ -D__sparc -D__sun -D__unix foo.cc /usr/tmp/cca02977.i
// GNU CPP version 2.3.1 (sparc)
//  /usr/local/lib/gcc-lib/sun4/2.3.1/cc1plus /usr/tmp/cca02977.i -quiet -dumpbase foo.cc -version -o /usr/tmp/cca02977.s
// GNU C++ version 2.3.1 (sparc) compiled by GNU C version 2.3.1.
// cp-decl.c:9961: failed assertion `current_class_decl != NULL_TREE && TREE_CODE (current_class_decl) == PARM_DECL'
// /usr/local/bin/gcc: Internal compiler error: program cc1plus got fatal signal 6