if (wpsize > 0)						    \
if (old != NULL)						    \
__vfscanf (FILE *s, const char *format, va_list argptr)#endif{  va_list arg = (va_list) argptr;  register const char *f = format;  register char fc;		/* Current character of the format.  */  register size_t done = 0;	/* Assignments done.  */  register size_t read_in = 0;	/* Chars read in.  */  register int c;		/* Last char read.  */  register int do_assign;	/* Whether to do an assignment.  */  register int width;		/* Maximum field width.  */  int group_flag;		/* %' modifier flag.  */#ifdef USE_IN_LIBIO  int flags;			/* Trace flags for current format element.  */#endif  /* Type modifiers.  */  int is_short, is_long, is_long_double;#ifdef	HAVE_LONGLONG  /* We use the `L' modifier for `long long int'.  */# define is_longlong	is_long_double#else# define is_longlong	0#endif  int malloc_string;		/* Args are char ** to be filled in.  */  /* Status for reading F-P nums.  */  char got_dot, got_e;  /* If a [...] is a [^...].  */  char not_in;  /* Base for integral numbers.  */  int base;  /* Signedness for integral numbers.  */  int number_signed;  /* Decimal point character.  */  wchar_t decimal;  /* Integral holding variables.  */  union    {      long long int q;      unsigned long long int uq;      long int l;      unsigned long int ul;    } num;  /* Character-buffer pointer.  */  register char *str, **strptr;  size_t strsize;  /* Workspace.  */  char *tw;			/* Temporary pointer.  */  char *wp = NULL;		/* Workspace.  */  size_t wpsize = 0;		/* Currently used bytes in workspace.  */  size_t wpmax = 0;		/* Maximal size of workspace.  */#define ADDW(Ch)							    \  do									    \    {									    \      if (wpsize == wpmax)						    \	{								    \	  char *old = wp;						    \	  wpmax = 200 > 2 * wpmax ? 200 : 2 * wpmax;			    \	  wp = (char *) alloca (wpmax);					    \	  if (wpsize > 0)						    \	    memcpy (wp, old, wpsize);					    \	}								    \      wp[wpsize++] = (Ch);						    \    }									    \  while (0)  ARGCHECK (s, format);  /* Figure out the decimal point character.  */  if (mbtowc (&decimal, _NL_CURRENT (LC_NUMERIC, DECIMAL_POINT),	      strlen (_NL_CURRENT (LC_NUMERIC, DECIMAL_POINT))) <= 0)    decimal = (wchar_t) *_NL_CURRENT (LC_NUMERIC, DECIMAL_POINT);  c = inchar ();  /* Run through the format string.  */  while (*f != '\0')    {      unsigned int argpos;      /* Extract the next argument, which is of type TYPE.	 For a %N$... spec, this is the Nth argument from the beginning;	 otherwise it is the next argument after the state now in ARG.  */#if 0      /* XXX Possible optimization.  */# define ARG(type)	(argpos == 0 ? va_arg (arg, type) :		      \			 ({ va_list arg = (va_list) argptr;		      \			    arg = (va_list) ((char *) arg		      \					     + (argpos - 1)		      \					     * __va_rounded_size (void *));   \			    va_arg (arg, type);				      \			 }))#else# define ARG(type)	(argpos == 0 ? va_arg (arg, type) :		      \			 ({ unsigned int pos = argpos;			      \			    va_list arg = (va_list) argptr;		      \			    while (--pos > 0)				      \			      (void) va_arg (arg, void *);		      \			    va_arg (arg, type);				      \			  }))#endif      if (!isascii (*f))	{	  /* Non-ASCII, may be a multibyte.  */	  int len = mblen (f, strlen (f));	  if (len > 0)	    {	      while (len-- > 0)		if (c == EOF)		  input_error ();		else if (c == *f++)		  (void) inchar ();		else		  conv_error ();	      continue;	    }	}      fc = *f++;      if (fc != '%')	{	  /* Characters other than format specs must just match.  */	  if (c == EOF)	    input_error ();	  if (isspace (fc))	    {	      /* Whitespace characters match any amount of whitespace.  */	      while (isspace (c))		inchar ();	      continue;	    }	  else if (c == fc)	    (void) inchar ();	  else	    conv_error ();	  continue;	}#ifdef USE_IN_LIBIO      /* That is the start of the coversion string. */      flags = 0;#endif      /* Initialize state of modifiers.  */      argpos = 0;      do_assign = 1;      group_flag = 0;      is_short = is_long = is_long_double = malloc_string = 0;      /* Check for a positional parameter specification.  */      if (isdigit (*f))	{	  argpos = *f++ - '0';	  while (isdigit (*f))	    argpos = argpos * 10 + (*f++ - '0');	  if (*f == '$')	    ++f;	  else	    {	      /* Oops; that was actually the field width.  */	      width = argpos;	      argpos = 0;	      goto got_width;	    }	}      /* Check for the assignment-suppressant and the number grouping flag.  */      while (*f == '*' || *f == '\'')	switch (*f++)	  {	  case '*':#ifdef USE_IN_LIBIO	    flags = SUPPRESS;#endif	    do_assign = 0;	    break;	  case '\'':	    group_flag = 1;	    break;	  }#ifdef USE_IN_LIBIO      /* We have seen width. */      if (isdigit (*f))	flags |= WIDTH;#endif      /* Find the maximum field width.  */      width = 0;      while (isdigit (*f))	{	  width *= 10;	  width += *f++ - '0';	}    got_width:      if (width == 0)	width = -1;      /* Check for type modifiers.  */      while (*f == 'h' || *f == 'l' || *f == 'L' || *f == 'a' || *f == 'q')	switch (*f++)	  {	  case 'h':	    /* int's are short int's.  */#ifdef USE_IN_LIBIO	    if (flags & ~(SUPPRESS | WIDTH))	      /* Signal illegal format element.  */	      conv_error ();	    flags |= SHORT;#endif	    is_short = 1;	    break;	  case 'l':	    if (is_long)	      {		/* A double `l' is equivalent to an `L'.  */#ifdef USE_IN_LIBIO		if ((flags & ~(SUPPRESS | WIDTH)) && (flags & LONGDBL))		  conv_error ();		flags &= ~LONG;		flags |= LONGDBL;#endif		is_longlong = 1;	      }	    else	      {		/* int's are long int's.  */#ifdef USE_IN_LIBIO		flags |= LONG;#endif		is_long = 1;	      }	    break;	  case 'q':	  case 'L':	    /* double's are long double's, and int's are long long int's.  */#ifdef USE_IN_LIBIO	    if (flags & ~(SUPPRESS | WIDTH))	      /* Signal illegal format element.  */	      conv_error ();	    flags |= LONGDBL;#endif	    is_long_double = 1;	    break;	  case 'a':	    /* String conversions (%s, %[) take a `char **'	       arg and fill it in with a malloc'd pointer.  */	    malloc_string = 1;	    break;	  }      /* End of the format string?  */      if (*f == '\0')	conv_error ();      /* Find the conversion specifier.  */      fc = *f++;      if (fc != '[' && fc != 'c' && fc != 'n')	/* Eat whitespace.  */	while (isspace (c))	  (void) inchar ();      switch (fc)	{	case '%':	/* Must match a literal '%'.  */	  if (c != fc)	    conv_error ();	  break;	case 'n':	/* Answer number of assignments done.  */	  if (do_assign)	    *ARG (int *) = read_in - 1;	/* Don't count the read-ahead.  */	  break;	case 'c':	/* Match characters.  */	  if (do_assign)	    {	      str = ARG (char *);	      if (str == NULL)		conv_error ();	    }	  if (c == EOF)	    input_error ();	  if (width == -1)	    width = 1;	  if (do_assign)	    {	      do		*str++ = c;	      while (inchar () != EOF && --width > 0);	    }	  else	    while (inchar () != EOF && --width > 0);	  if (do_assign)	    ++done;	  break;	case 's':		/* Read a string.  */#define STRING_ARG							      \	  if (do_assign)						      \	    {								      \	      if (malloc_string)					      \		{							      \		  /* The string is to be stored in a malloc'd buffer.  */     \		  strptr = ARG (char **);				      \		  if (strptr == NULL)					      \		    conv_error ();					      \		  /* Allocate an initial buffer.  */			      \		  strsize = 100;					      \		  *strptr = str = malloc (strsize);			      \		}							      \	      else							      \		str = ARG (char *);					      \	      if (str == NULL)						      \		conv_error ();						      \	    }	  STRING_ARG;	  if (c == EOF)	    input_error ();	  do	    {	      if (isspace (c))		break;#define	STRING_ADD_CHAR(c)						      \	      if (do_assign)						      \		{							      \		  *str++ = c;						      \		  if (malloc_string && str == *strptr + strsize)	      \		    {							      \		      /* Enlarge the buffer.  */			      \		      str = realloc (*strptr, strsize * 2);		      \		      if (str == NULL)					      \			{						      \			  /* Can't allocate that much.  Last-ditch effort.  */\			  str = realloc (*strptr, strsize + 1);		      \			  if (str == NULL)				      \			    {						      \			      /* We lose.  Oh well.			      \				 Terminate the string and stop converting,    \				 so at least we don't swallow any input.  */  \			      (*strptr)[strsize] = '\0';		      \			      ++done;					      \			      conv_error ();				      \			    }						      \			  else						      \			    {						      \			      *strptr = str;				      \			      str += strsize;				      \			      ++strsize;				      \			    }						      \			}						      \		      else						      \			{						      \			  *strptr = str;				      \			  str += strsize;				      \			  strsize *= 2;					      \			}						      \		    }							      \		}	      STRING_ADD_CHAR (c);	    } while (inchar () != EOF && (width <= 0 || --width > 0));	  if (do_assign)	    {	      *str = '\0';	      ++done;	    }	  break;	case 'x':	/* Hexadecimal integer.  */	case 'X':	/* Ditto.  */	  base = 16;	  number_signed = 0;	  goto number;	case 'o':	/* Octal integer.  */	  base = 8;	  number_signed = 0;	  goto number;	case 'u':	/* Unsigned decimal integer.  */	  base = 10;	  number_signed = 0;	  goto number;	case 'd':	/* Signed decimal integer.  */	  base = 10;	  number_signed = 1;	  goto number;	case 'i':	/* Generic number.  */	  base = 0;	  number_signed = 1;	number:	  if (c == EOF)	    input_error ();	  /* Check for a sign.  */	  if (c == '-' || c == '+')	    {	      ADDW (c);	      if (width > 0)		--width;	      (void) inchar ();	    }	  /* Look for a leading indication of base.  */	  if (c == '0')	    {	      if (width > 0)		--width;	      ADDW ('0');	      (void) inchar ();	      if (tolower (c) == 'x')		{		  if (base == 0)		    base = 16;		  if (base == 16)		    {		      if (width > 0)			--width;		      (void) inchar ();		    }		}	      else if (base == 0)		base = 8;	    }	  if (base == 0)	    base = 10;	  /* Read the number into workspace.  */	  do	    {	      if (base == 16 ? !isxdigit (c) :		  (!isdigit (c) || c - '0' >= base))		break;	      ADDW (c);	      if (width > 0)		--width;	    }	  while (inchar () != EOF && width != 0);	  if (wpsize == 0 ||	      (wpsize == 1 && (wp[0] == '+' || wp[0] == '-')))	    /* There was no number.  */	    conv_error ();	  /* Convert the number.  */	  ADDW ('\0');	  if (is_longlong)	    {	      if (number_signed)		num.q = __strtoq_internal (wp, &tw, base, group_flag);	      else		num.uq = __strtouq_internal (wp, &tw, base, group_flag);	    }	  else	    {	      if (number_signed)		num.l = __strtol_internal (wp, &tw, base, group_flag);	      else		num.ul = __strtoul_internal (wp, &tw, base, group_flag);	    }	  if (wp == tw)	    conv_error ();	  if (do_assign)	    {	      if (! number_signed)		{		  if (is_longlong)		    *ARG (unsigned LONGLONG int *) = num.uq;		  else if (is_long)		    *ARG (unsigned long int *) = num.ul;		  else if (is_short)		    *ARG (unsigned short int *)		      = (unsigned short int) num.ul;		  else		    *ARG (unsigned int *) = (unsigned int) num.ul;		}	      else		{		  if (is_longlong)		    *ARG (LONGLONG int *) = num.q;		  else if (is_long)		    *ARG (long int *) = num.l;		  else if (is_short)		    *ARG (short int *) = (short int) num.l;		  else		    *ARG (int *) = (int) num.l;		}	      ++done;	    }	  break;	case 'e':	/* Floating-point numbers.  */	case 'E':	case 'f':	case 'g':	case 'G':	  if (c == EOF)	    input_error ();	  /* Check for a sign.  */	  if (c == '-' || c == '+')	    {	      ADDW (c);	      if (inchar () == EOF)		/* EOF is only an input error before we read any chars.  */		conv_error ();	      if (width > 0)		--width;	    }	  got_dot = got_e = 0;	  do	    {	      if (isdigit (c))		ADDW (c);	      else if (got_e && wp[wpsize - 1] == 'e'		       && (c == '-' || c == '+'))		ADDW (c);	      else if (!got_e && tolower (c) == 'e')		{		  ADDW ('e');		  got_e = got_dot = 1;		}	      else if (c == decimal && !got_dot)		{		  ADDW (c);		  got_dot = 1;		}	      else		break;	      if (width > 0)		--width;	    } while (inchar () != EOF && width != 0);	  if (wpsize == 0)	    conv_error();	  if (wp[wpsize - 1] == '-' || wp[wpsize - 1] == '+'	      || wp[wpsize - 1] == 'e')	    conv_error ();	  /* Convert the number.  */	  ADDW ('\0');	  if (is_long_double)	    {	      long double d = __strtold_internal (wp, &tw, group_flag);	      if (do_assign && tw != wp)		*ARG (long double *) = d;	    }	  else if (is_long)	    {	      double d = __strtod_internal (wp, &tw, group_flag);	      if (do_assign && tw != wp)		*ARG (double *) = d;	    }	  else	    {	      float d = __strtof_internal (wp, &tw, group_flag);	      if (do_assign && tw != wp)		*ARG (float *) = d;	    }	  if (tw == wp)	    conv_error ();	  if (do_assign)	    ++done;	  break;	case '[':	/* Character class.  */	  STRING_ARG;	  if (c == EOF)	    input_error();	  if (*f == '^')	    {	      ++f;	      not_in = 1;	    }	  else	    not_in = 0;	  while ((fc = *f++) != '\0' && fc != ']')	    {	      if (fc == '-' && *f != '\0' && *f != ']' &&		  wpsize > 0 && wp[wpsize - 1] <= *f)		/* Add all characters from the one before the '-'		   up to (but not including) the next format char.  */		for (fc = wp[wpsize - 1] + 1; fc < *f; ++fc)		  ADDW (fc);	      else		/* Add the character to the list.  */		ADDW (fc);	    }	  if (fc == '\0')	    conv_error();	  ADDW ('\0');	  num.ul = read_in;	  do	    {	      if ((strchr (wp, c) == NULL) != not_in)		break;	      STRING_ADD_CHAR (c);	      if (width > 0)		--width;	    } while (inchar () != EOF && width != 0);	  if (read_in == num.ul)	    conv_error ();	  if (do_assign)	    {	      *str = '\0';	      ++done;	    }	  break;	case 'p':	/* Generic pointer.  */	  base = 16;	  /* A PTR must be the same size as a `long int'.  */	  is_long = 1;	  number_signed = 0;	  goto number;	}    }  return ((c == EOF || ungetc (c, s)), done);}