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/* Spurious uninitialized variable warnings, case 2.

   Taken from cpphash.c (macroexpand) */

/* { dg-do compile } */

/* { dg-options "-O -Wuninitialized" } */

struct definition

{

  int nargs;

  int rest_args;

};

struct cpp_reader;

enum cpp_token

{

  CPP_EOF, CPP_POP, CPP_COMMA, CPP_RPAREN

};

extern enum cpp_token macarg (struct cpp_reader *, int);

void

macroexpand (struct cpp_reader *pfile, struct definition *defn)

{

  int nargs = defn->nargs;

  if (nargs >= 0)

    {

      enum cpp_token token;  /* { dg-bogus "token" "uninitialized variable warning" } */

      int i, rest_args;

      i = 0;

      rest_args = 0;

      do

        {

          if (rest_args)

            continue;

          if (i < nargs || (nargs == 0 && i == 0))

            {

              /* if we are working on last arg which absorbs rest of args... */

              if (i == nargs - 1 && defn->rest_args)

                rest_args = 1;

              token = macarg (pfile, rest_args);

            }

          else

            token = macarg (pfile, 0);

          if (token == CPP_EOF || token == CPP_POP)

            return;

          i++;

        }

      while (token == CPP_COMMA);

    }

}