/* u_1_28.t:    Macro expanding to name identical to directive. */

#define D   define

/* u.1.28:  There are following two ways of preprocessing.

    1:  "D" isn't expanded, because # is the first token of the line.

        Preprocessor reports that "D" is an unknown directive.

    2:  "D" is expanded, because that is not a directive.

        Compiler-phase will diagnose the output of preprocess.

    Anyway, preprocessor should not interprete this line as a preprocessing

    directive.

 */

#D  A   B