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#include <stdio.h>

#define SPLICE(a, b) INNER_SPLICE(a, b)

#define INNER_SPLICE(a, b) a ## b

#define STRINGIFY(a) INNER_STRINGIFY(a)

#define INNER_STRINGIFY(a) #a

#define FIFTY_SEVEN 57

#define FORTY_EIGHT 48

#undef  FORTY_EIGHT

struct outer

{

  struct fields

  {

    struct fault

    {

      int addr;

    } fault;

  } fields;

};

struct outer address;

#define addr fields.fault.addr

/* A macro named UNTIL_<func> is #defined until just before the

   definition of the function <func>.

   A macro named BEFORE_<func> is not #defined until just before the

   definition of <func>.

   The macro WHERE is redefined before each function <func> to the

   token list ``before <func>''.

   The macscp IN_MACSCP2_H and IN_MACSCP3_H are defined while

   processing those header files; macscp4.h uses them to choose

   appropriate function names, output strings, and macro definitions.  */

#define UNTIL_MACSCP1_1

#define UNTIL_MACSCP2_1

#define UNTIL_MACSCP4_1_FROM_MACSCP2

#define UNTIL_MACSCP4_2_FROM_MACSCP2

#define UNTIL_MACSCP2_2

#define UNTIL_MACSCP1_2

#define UNTIL_MACSCP3_1

#define UNTIL_MACSCP4_1_FROM_MACSCP3

#define UNTIL_MACSCP4_2_FROM_MACSCP3

#define UNTIL_MACSCP3_2

#define UNTIL_MACSCP1_3

#define WHERE before macscp1_1

#define BEFORE_MACSCP1_1

#undef UNTIL_MACSCP1_1

void

macscp1_1 ()

{

  puts ("macscp1_1");

}

#include "macscp2.h"

#undef WHERE

#define WHERE before macscp1_2

#define BEFORE_MACSCP1_2

#undef UNTIL_MACSCP1_2

void

macscp1_2 ()

{

  puts ("macscp1_2");

}

#include "macscp3.h"

#undef WHERE

#define WHERE before macscp1_3

#define BEFORE_MACSCP1_3

#undef UNTIL_MACSCP1_3

void

macscp1_3 ()

{

  puts ("macscp1_3");

}

void

macscp_expr (void)

{

  int foo = -1;

  foo = 0;  /* set breakpoint here */

#define MACRO_TO_EXPAND foo

  foo = 1;

#undef MACRO_TO_EXPAND

  foo = 2;

}

#define TWENTY_THREE 23

int

main (int argc, char **argv)

{

  macscp1_1 ();

  macscp2_1 ();

  macscp4_1_from_macscp2 ();

  macscp4_2_from_macscp2 ();

  macscp2_2 ();

  macscp1_2 ();

  macscp3_1 ();

  macscp4_1_from_macscp3 ();

  macscp4_2_from_macscp3 ();

  macscp3_2 ();

  macscp1_3 ();

  macscp_expr ();

}