Upgrade to current vfprintf.

This gets us various bug fixes and missing C99 functionality.

Bug: https://code.google.com/p/android/issues/detail?id=64886
Change-Id: Ie9f8ac569e9b5eec1e4a1faacfe2c21662eaf895

3 files changed, 2 insertions, 1370 deletions

diff --git a/libc/stdio/floatio.h b/libc/stdio/floatio.h
deleted file mode 100644
index 20f9801..0000000
--- a/libc/stdio/floatio.h
+++ /dev/null
@@ -1,42 +0,0 @@
-/*	$OpenBSD: floatio.h,v 1.3 2003/06/02 20:18:37 millert Exp $	*/
-
-/*-
- * Copyright (c) 1990, 1993
- *	The Regents of the University of California.  All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Chris Torek.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-/*
- * Floating point scanf/printf (input/output) definitions.
- */
-
-/* 11-bit exponent (VAX G floating point) is 308 decimal digits */
-#define	MAXEXP		308
-/* 128 bit fraction takes up 39 decimal digits; max reasonable precision */
-#define	MAXFRACT	39
diff --git a/libc/stdio/local.h b/libc/stdio/local.h
index facaa66..eecfeef 100644
--- a/libc/stdio/local.h
+++ b/libc/stdio/local.h
@@ -95,6 +95,8 @@ extern int __sdidinit;
 #define FUNLOCKFILE(fp) funlockfile(fp)
 
 #define FLOATING_POINT
+#define PRINTF_WIDE_CHAR
+#define SCANF_WIDE_CHAR
 
 /* OpenBSD exposes these in <stdio.h>, but we only want them exposed to the implementation. */
 __BEGIN_DECLS
diff --git a/libc/stdio/vfprintf.c b/libc/stdio/vfprintf.c
deleted file mode 100644
index 76ca659..0000000
--- a/libc/stdio/vfprintf.c
+++ /dev/null
@@ -1,1328 +0,0 @@
-/*	$OpenBSD: vfprintf.c,v 1.37 2006/01/13 17:56:18 millert Exp $	*/
-/*-
- * Copyright (c) 1990 The Regents of the University of California.
- * All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Chris Torek.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-/*
- * Actual printf innards.
- *
- * This code is large and complicated...
- */
-
-#include <sys/types.h>
-#include <sys/mman.h>
-
-#include <errno.h>
-#include <stdarg.h>
-#include <stddef.h>
-#include <stdio.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "local.h"
-#include "fvwrite.h"
-
-union arg {
-	int			intarg;
-	unsigned int		uintarg;
-	long			longarg;
-	unsigned long		ulongarg;
-	long long		longlongarg;
-	unsigned long long	ulonglongarg;
-	ptrdiff_t		ptrdiffarg;
-	size_t			sizearg;
-	size_t			ssizearg;
-	intmax_t		intmaxarg;
-	uintmax_t		uintmaxarg;
-	void			*pvoidarg;
-	char			*pchararg;
-	signed char		*pschararg;
-	short			*pshortarg;
-	int			*pintarg;
-	long			*plongarg;
-	long long		*plonglongarg;
-	ptrdiff_t		*pptrdiffarg;
-	size_t			*pssizearg;
-	intmax_t		*pintmaxarg;
-#ifdef FLOATING_POINT
-	double			doublearg;
-	long double		longdoublearg;
-#endif
-};
-
-static int __find_arguments(const char *fmt0, va_list ap, union arg **argtable,
-    size_t *argtablesiz);
-static int __grow_type_table(unsigned char **typetable, int *tablesize);
-
-/*
- * Flush out all the vectors defined by the given uio,
- * then reset it so that it can be reused.
- */
-static int
-__sprint(FILE *fp, struct __suio *uio)
-{
-	int err;
-
-	if (uio->uio_resid == 0) {
-		uio->uio_iovcnt = 0;
-		return (0);
-	}
-	err = __sfvwrite(fp, uio);
-	uio->uio_resid = 0;
-	uio->uio_iovcnt = 0;
-	return (err);
-}
-
-/*
- * Helper function for `fprintf to unbuffered unix file': creates a
- * temporary buffer.  We only work on write-only files; this avoids
- * worries about ungetc buffers and so forth.
- */
-static int
-__sbprintf(FILE *fp, const char *fmt, va_list ap)
-{
-	int ret;
-	FILE fake;
-	struct __sfileext fakeext;
-	unsigned char buf[BUFSIZ];
-
-	_FILEEXT_SETUP(&fake, &fakeext);
-	/* copy the important variables */
-	fake._flags = fp->_flags & ~__SNBF;
-	fake._file = fp->_file;
-	fake._cookie = fp->_cookie;
-	fake._write = fp->_write;
-
-	/* set up the buffer */
-	fake._bf._base = fake._p = buf;
-	fake._bf._size = fake._w = sizeof(buf);
-	fake._lbfsize = 0;	/* not actually used, but Just In Case */
-
-	/* do the work, then copy any error status */
-	ret = __vfprintf(&fake, fmt, ap);
-	if (ret >= 0 && __sflush(&fake))
-		ret = EOF;
-	if (fake._flags & __SERR)
-		fp->_flags |= __SERR;
-	return (ret);
-}
-
-
-#ifdef FLOATING_POINT
-#include <locale.h>
-#include <math.h>
-#include "floatio.h"
-
-#define	BUF		(MAXEXP+MAXFRACT+1)	/* + decimal point */
-#define	DEFPREC		6
-
-static char *cvt(double, int, int, char *, int *, int, int *);
-extern void __freedtoa(char *);
-static int exponent(char *, int, int);
-#else /* no FLOATING_POINT */
-#define	BUF		40
-#endif /* FLOATING_POINT */
-
-#define STATIC_ARG_TBL_SIZE 8	/* Size of static argument table. */
-
-/*
- * Macros for converting digits to letters and vice versa
- */
-#define	to_digit(c)	((c) - '0')
-#define is_digit(c)	((unsigned)to_digit(c) <= 9)
-#define	to_char(n)	((n) + '0')
-
-/*
- * Flags used during conversion.
- */
-#define	ALT		0x0001		/* alternate form */
-#define	HEXPREFIX	0x0002		/* add 0x or 0X prefix */
-#define	LADJUST		0x0004		/* left adjustment */
-#define	LONGDBL		0x0008		/* long double; unimplemented */
-#define	LONGINT		0x0010		/* long integer */
-#define	LLONGINT	0x0020		/* long long integer */
-#define	SHORTINT	0x0040		/* short integer */
-#define	ZEROPAD		0x0080		/* zero (as opposed to blank) pad */
-#define FPT		0x0100		/* Floating point number */
-#define PTRINT		0x0200		/* (unsigned) ptrdiff_t */
-#define SIZEINT		0x0400		/* (signed) size_t */
-#define CHARINT		0x0800		/* 8 bit integer */
-#define MAXINT		0x1000		/* largest integer size (intmax_t) */
-
-int
-vfprintf(FILE *fp, const char *fmt0, __va_list ap)
-{
-	int ret;
-
-	FLOCKFILE(fp);
-	ret = __vfprintf(fp, fmt0, ap);
-	FUNLOCKFILE(fp);
-	return (ret);
-}
-
-int
-__vfprintf(FILE *fp, const char *fmt0, __va_list ap)
-{
-	char *fmt;		/* format string */
-	int ch;			/* character from fmt */
-	int n, m, n2;		/* handy integers (short term usage) */
-	char *cp;		/* handy char pointer (short term usage) */
-	struct __siov *iovp;	/* for PRINT macro */
-	int flags;		/* flags as above */
-	int ret;		/* return value accumulator */
-	int width;		/* width from format (%8d), or 0 */
-	int prec;		/* precision from format (%.3d), or -1 */
-	char sign;		/* sign prefix (' ', '+', '-', or \0) */
-	wchar_t wc;
-	void* ps;
-#ifdef FLOATING_POINT
-	char *decimal_point = ".";
-	char softsign;		/* temporary negative sign for floats */
-	double _double = 0.;	/* double precision arguments %[eEfgG] */
-	int expt;		/* integer value of exponent */
-	int expsize = 0;	/* character count for expstr */
-	int ndig;		/* actual number of digits returned by cvt */
-	char expstr[7];		/* buffer for exponent string */
-	char *dtoaresult = NULL;
-#endif
-
-	uintmax_t _umax;	/* integer arguments %[diouxX] */
-	enum { OCT, DEC, HEX } base;/* base for [diouxX] conversion */
-	int dprec;		/* a copy of prec if [diouxX], 0 otherwise */
-	int realsz;		/* field size expanded by dprec */
-	int size;		/* size of converted field or string */
-	char* xdigs = NULL;		/* digits for [xX] conversion */
-#define NIOV 8
-	struct __suio uio;	/* output information: summary */
-	struct __siov iov[NIOV];/* ... and individual io vectors */
-	char buf[BUF];		/* space for %c, %[diouxX], %[eEfgG] */
-	char ox[2];		/* space for 0x hex-prefix */
-	union arg *argtable;	/* args, built due to positional arg */
-	union arg statargtable[STATIC_ARG_TBL_SIZE];
-	size_t argtablesiz;
-	int nextarg;		/* 1-based argument index */
-	va_list orgap;		/* original argument pointer */
-	/*
-	 * Choose PADSIZE to trade efficiency vs. size.  If larger printf
-	 * fields occur frequently, increase PADSIZE and make the initialisers
-	 * below longer.
-	 */
-#define	PADSIZE	16		/* pad chunk size */
-	static const char blanks[PADSIZE] =
-	 {' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '};
-	static const char zeroes[PADSIZE] =
-	 {'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'};
-
-	/*
-	 * BEWARE, these `goto error' on error, and PAD uses `n'.
-	 */
-#define	PRINT(ptr, len) do { \
-	iovp->iov_base = (ptr); \
-	iovp->iov_len = (len); \
-	uio.uio_resid += (len); \
-	iovp++; \
-	if (++uio.uio_iovcnt >= NIOV) { \
-		if (__sprint(fp, &uio)) \
-			goto error; \
-		iovp = iov; \
-	} \
-} while (0)
-#define	PAD(howmany, with) do { \
-	if ((n = (howmany)) > 0) { \
-		while (n > PADSIZE) { \
-			PRINT(with, PADSIZE); \
-			n -= PADSIZE; \
-		} \
-		PRINT(with, n); \
-	} \
-} while (0)
-#define	FLUSH() do { \
-	if (uio.uio_resid && __sprint(fp, &uio)) \
-		goto error; \
-	uio.uio_iovcnt = 0; \
-	iovp = iov; \
-} while (0)
-
-	/*
-	 * To extend shorts properly, we need both signed and unsigned
-	 * argument extraction methods.
-	 */
-#define	SARG() \
-	((intmax_t)(flags&MAXINT ? GETARG(intmax_t) : \
-	    flags&LLONGINT ? GETARG(long long) : \
-	    flags&LONGINT ? GETARG(long) : \
-	    flags&PTRINT ? GETARG(ptrdiff_t) : \
-	    flags&SIZEINT ? GETARG(ssize_t) : \
-	    flags&SHORTINT ? (short)GETARG(int) : \
-	    flags&CHARINT ? (__signed char)GETARG(int) : \
-	    GETARG(int)))
-#define	UARG() \
-	((uintmax_t)(flags&MAXINT ? GETARG(uintmax_t) : \
-	    flags&LLONGINT ? GETARG(unsigned long long) : \
-	    flags&LONGINT ? GETARG(unsigned long) : \
-	    flags&PTRINT ? (uintptr_t)GETARG(ptrdiff_t) : /* XXX */ \
-	    flags&SIZEINT ? GETARG(size_t) : \
-	    flags&SHORTINT ? (unsigned short)GETARG(int) : \
-	    flags&CHARINT ? (unsigned char)GETARG(int) : \
-	    GETARG(unsigned int)))
-
-	 /*
-	  * Get * arguments, including the form *nn$.  Preserve the nextarg
-	  * that the argument can be gotten once the type is determined.
-	  */
-#define GETASTER(val) \
-	n2 = 0; \
-	cp = fmt; \
-	while (is_digit(*cp)) { \
-		n2 = 10 * n2 + to_digit(*cp); \
-		cp++; \
-	} \
-	if (*cp == '$') { \
-		int hold = nextarg; \
-		if (argtable == NULL) { \
-			argtable = statargtable; \
-			__find_arguments(fmt0, orgap, &argtable, &argtablesiz); \
-		} \
-		nextarg = n2; \
-		val = GETARG(int); \
-		nextarg = hold; \
-		fmt = ++cp; \
-	} else { \
-		val = GETARG(int); \
-	}
-
-/*
-* Get the argument indexed by nextarg.   If the argument table is
-* built, use it to get the argument.  If its not, get the next
-* argument (and arguments must be gotten sequentially).
-*/
-#define GETARG(type) \
-	((argtable != NULL) ? *((type*)(&argtable[nextarg++])) : \
-		(nextarg++, va_arg(ap, type)))
-
-	_SET_ORIENTATION(fp, -1);
-	/* sorry, fprintf(read_only_file, "") returns EOF, not 0 */
-	if (cantwrite(fp)) {
-		errno = EBADF;
-		return (EOF);
-	}
-
-	/* optimise fprintf(stderr) (and other unbuffered Unix files) */
-	if ((fp->_flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) &&
-	    fp->_file >= 0)
-		return (__sbprintf(fp, fmt0, ap));
-
-	fmt = (char *)fmt0;
-	argtable = NULL;
-	nextarg = 1;
-	va_copy(orgap, ap);
-	uio.uio_iov = iovp = iov;
-	uio.uio_resid = 0;
-	uio.uio_iovcnt = 0;
-	ret = 0;
-
-	memset(&ps, 0, sizeof(ps));
-	/*
-	 * Scan the format for conversions (`%' character).
-	 */
-	for (;;) {
-		cp = fmt;
-#if 1  /* BIONIC */
-                n = -1;
-                while ( (wc = *fmt) != 0 ) {
-                    if (wc == '%') {
-                        n = 1;
-                        break;
-                    }
-                    fmt++;
-                }
-#else
-		while ((n = mbrtowc(&wc, fmt, MB_CUR_MAX, &ps)) > 0) {
-			fmt += n;
-			if (wc == '%') {
-				fmt--;
-				break;
-			}
-		}
-#endif
-		if ((m = fmt - cp) != 0) {
-			PRINT(cp, m);
-			ret += m;
-		}
-		if (n <= 0)
-			goto done;
-		fmt++;		/* skip over '%' */
-
-		flags = 0;
-		dprec = 0;
-		width = 0;
-		prec = -1;
-		sign = '\0';
-
-rflag:		ch = *fmt++;
-reswitch:	switch (ch) {
-		case ' ':
-			/*
-			 * ``If the space and + flags both appear, the space
-			 * flag will be ignored.''
-			 *	-- ANSI X3J11
-			 */
-			if (!sign)
-				sign = ' ';
-			goto rflag;
-		case '#':
-			flags |= ALT;
-			goto rflag;
-		case '*':
-			/*
-			 * ``A negative field width argument is taken as a
-			 * - flag followed by a positive field width.''
-			 *	-- ANSI X3J11
-			 * They don't exclude field widths read from args.
-			 */
-			GETASTER(width);
-			if (width >= 0)
-				goto rflag;
-			width = -width;
-			/* FALLTHROUGH */
-		case '-':
-			flags |= LADJUST;
-			goto rflag;
-		case '+':
-			sign = '+';
-			goto rflag;
-		case '.':
-			if ((ch = *fmt++) == '*') {
-				GETASTER(n);
-				prec = n < 0 ? -1 : n;
-				goto rflag;
-			}
-			n = 0;
-			while (is_digit(ch)) {
-				n = 10 * n + to_digit(ch);
-				ch = *fmt++;
-			}
-			if (ch == '$') {
-				nextarg = n;
-				if (argtable == NULL) {
-					argtable = statargtable;
-					__find_arguments(fmt0, orgap,
-					    &argtable, &argtablesiz);
-				}
-				goto rflag;
-			}
-			prec = n < 0 ? -1 : n;
-			goto reswitch;
-		case '0':
-			/*
-			 * ``Note that 0 is taken as a flag, not as the
-			 * beginning of a field width.''
-			 *	-- ANSI X3J11
-			 */
-			flags |= ZEROPAD;
-			goto rflag;
-		case '1': case '2': case '3': case '4':
-		case '5': case '6': case '7': case '8': case '9':
-			n = 0;
-			do {
-				n = 10 * n + to_digit(ch);
-				ch = *fmt++;
-			} while (is_digit(ch));
-			if (ch == '$') {
-				nextarg = n;
-				if (argtable == NULL) {
-					argtable = statargtable;
-					__find_arguments(fmt0, orgap,
-					    &argtable, &argtablesiz);
-				}
-				goto rflag;
-			}
-			width = n;
-			goto reswitch;
-#ifdef FLOATING_POINT
-		case 'L':
-			flags |= LONGDBL;
-			goto rflag;
-#endif
-		case 'h':
-			if (*fmt == 'h') {
-				fmt++;
-				flags |= CHARINT;
-			} else {
-				flags |= SHORTINT;
-			}
-			goto rflag;
-		case 'j':
-			flags |= MAXINT;
-			goto rflag;
-		case 'l':
-			if (*fmt == 'l') {
-				fmt++;
-				flags |= LLONGINT;
-			} else {
-				flags |= LONGINT;
-			}
-			goto rflag;
-		case 'q':
-			flags |= LLONGINT;
-			goto rflag;
-		case 't':
-			flags |= PTRINT;
-			goto rflag;
-		case 'z':
-			flags |= SIZEINT;
-			goto rflag;
-		case 'c':
-			*(cp = buf) = GETARG(int);
-			size = 1;
-			sign = '\0';
-			break;
-		case 'D':
-			flags |= LONGINT;
-			/*FALLTHROUGH*/
-		case 'd':
-		case 'i':
-			_umax = SARG();
-			if ((intmax_t)_umax < 0) {
-				_umax = -_umax;
-				sign = '-';
-			}
-			base = DEC;
-			goto number;
-#ifdef FLOATING_POINT
-		case 'e':
-		case 'E':
-		case 'f':
-		case 'g':
-		case 'G':
-			if (prec == -1) {
-				prec = DEFPREC;
-			} else if ((ch == 'g' || ch == 'G') && prec == 0) {
-				prec = 1;
-			}
-
-			if (flags & LONGDBL) {
-				_double = (double) GETARG(long double);
-			} else {
-				_double = GETARG(double);
-			}
-
-			/* do this before tricky precision changes */
-			if (isinf(_double)) {
-				if (_double < 0)
-					sign = '-';
-				cp = "Inf";
-				size = 3;
-				break;
-			}
-			if (isnan(_double)) {
-				cp = "NaN";
-				size = 3;
-				break;
-			}
-
-			if (dtoaresult != NULL) __freedtoa(dtoaresult);
-			flags |= FPT;
-			dtoaresult = cp = cvt(_double, prec, flags, &softsign,
-				&expt, ch, &ndig);
-			if (ch == 'g' || ch == 'G') {
-				if (expt <= -4 || expt > prec)
-					ch = (ch == 'g') ? 'e' : 'E';
-				else
-					ch = 'g';
-			}
-			if (ch <= 'e') {	/* 'e' or 'E' fmt */
-				--expt;
-				expsize = exponent(expstr, expt, ch);
-				size = expsize + ndig;
-				if (ndig > 1 || flags & ALT)
-					++size;
-			} else if (ch == 'f') {		/* f fmt */
-				if (expt > 0) {
-					size = expt;
-					if (prec || flags & ALT)
-						size += prec + 1;
-				} else { /* "0.X" */
-					size = prec + 2;
-				}
-			} else if (expt >= ndig) {	/* fixed g fmt */
-				size = expt;
-				if (flags & ALT)
-					++size;
-			} else {
-				size = ndig + (expt > 0 ?  1 : 2 - expt);
-			}
-
-			if (softsign)
-				sign = '-';
-			break;
-#endif /* FLOATING_POINT */
-/* the Android security team suggests removing support for %n
- * since it has no real practical value, and could lead to
- * running malicious code (for really buggy programs that
- * send to printf() user-generated formatting strings).
- */
-#if 0
-		case 'n':
-			if (flags & LLONGINT)
-				*GETARG(long long *) = ret;
-			else if (flags & LONGINT)
-				*GETARG(long *) = ret;
-			else if (flags & SHORTINT)
-				*GETARG(short *) = ret;
-			else if (flags & CHARINT)
-				*GETARG(__signed char *) = ret;
-			else if (flags & PTRINT)
-				*GETARG(ptrdiff_t *) = ret;
-			else if (flags & SIZEINT)
-				*GETARG(ssize_t *) = ret;
-			else if (flags & MAXINT)
-				*GETARG(intmax_t *) = ret;
-			else
-				*GETARG(int *) = ret;
-			continue;	/* no output */
-#endif
-		case 'O':
-			flags |= LONGINT;
-			/*FALLTHROUGH*/
-		case 'o':
-			_umax = UARG();
-			base = OCT;
-			goto nosign;
-		case 'p':
-			/*
-			 * ``The argument shall be a pointer to void.  The
-			 * value of the pointer is converted to a sequence
-			 * of printable characters, in an implementation-
-			 * defined manner.''
-			 *	-- ANSI X3J11
-			 */
-			/* NOSTRICT */
-			_umax = (u_long)GETARG(void *);
-			base = HEX;
-			xdigs = "0123456789abcdef";
-			flags |= HEXPREFIX;
-			ch = 'x';
-			goto nosign;
-		case 's':
-			if ((cp = GETARG(char *)) == NULL)
-				cp = "(null)";
-			if (prec >= 0) {
-				/*
-				 * can't use strlen; can only look for the
-				 * NUL in the first `prec' characters, and
-				 * strlen() will go further.
-				 */
-				char *p = memchr(cp, 0, prec);
-
-				if (p != NULL) {
-					size = p - cp;
-					if (size > prec)
-						size = prec;
-				} else {
-					size = prec;
-				}
-			} else {
-				size = strlen(cp);
-			}
-			sign = '\0';
-			break;
-		case 'U':
-			flags |= LONGINT;
-			/*FALLTHROUGH*/
-		case 'u':
-			_umax = UARG();
-			base = DEC;
-			goto nosign;
-		case 'X':
-			xdigs = "0123456789ABCDEF";
-			goto hex;
-		case 'x':
-			xdigs = "0123456789abcdef";
-hex:			_umax = UARG();
-			base = HEX;
-			/* leading 0x/X only if non-zero */
-			if (flags & ALT && _umax != 0)
-				flags |= HEXPREFIX;
-
-			/* unsigned conversions */
-nosign:			sign = '\0';
-			/*
-			 * ``... diouXx conversions ... if a precision is
-			 * specified, the 0 flag will be ignored.''
-			 *	-- ANSI X3J11
-			 */
-number:			if ((dprec = prec) >= 0)
-				flags &= ~ZEROPAD;
-
-			/*
-			 * ``The result of converting a zero value with an
-			 * explicit precision of zero is no characters.''
-			 *	-- ANSI X3J11
-			 */
-			cp = buf + BUF;
-			if (_umax != 0 || prec != 0) {
-				/*
-				 * Unsigned mod is hard, and unsigned mod
-				 * by a constant is easier than that by
-				 * a variable; hence this switch.
-				 */
-				switch (base) {
-				case OCT:
-					do {
-						*--cp = to_char(_umax & 7);
-						_umax >>= 3;
-					} while (_umax);
-					/* handle octal leading 0 */
-					if (flags & ALT && *cp != '0')
-						*--cp = '0';
-					break;
-
-				case DEC:
-					/* many numbers are 1 digit */
-					while (_umax >= 10) {
-						*--cp = to_char(_umax % 10);
-						_umax /= 10;
-					}
-					*--cp = to_char(_umax);
-					break;
-
-				case HEX:
-					do {
-						*--cp = xdigs[_umax & 15];
-						_umax >>= 4;
-					} while (_umax);
-					break;
-
-				default:
-					cp = "bug in vfprintf: bad base";
-					size = strlen(cp);
-					goto skipsize;
-				}
-			}
-			size = buf + BUF - cp;
-		skipsize:
-			break;
-		default:	/* "%?" prints ?, unless ? is NUL */
-			if (ch == '\0')
-				goto done;
-			/* pretend it was %c with argument ch */
-			cp = buf;
-			*cp = ch;
-			size = 1;
-			sign = '\0';
-			break;
-		}
-
-		/*
-		 * All reasonable formats wind up here.  At this point, `cp'
-		 * points to a string which (if not flags&LADJUST) should be
-		 * padded out to `width' places.  If flags&ZEROPAD, it should
-		 * first be prefixed by any sign or other prefix; otherwise,
-		 * it should be blank padded before the prefix is emitted.
-		 * After any left-hand padding and prefixing, emit zeroes
-		 * required by a decimal [diouxX] precision, then print the
-		 * string proper, then emit zeroes required by any leftover
-		 * floating precision; finally, if LADJUST, pad with blanks.
-		 *
-		 * Compute actual size, so we know how much to pad.
-		 * size excludes decimal prec; realsz includes it.
-		 */
-		realsz = dprec > size ? dprec : size;
-		if (sign)
-			realsz++;
-		else if (flags & HEXPREFIX)
-			realsz+= 2;
-
-		/* right-adjusting blank padding */
-		if ((flags & (LADJUST|ZEROPAD)) == 0)
-			PAD(width - realsz, blanks);
-
-		/* prefix */
-		if (sign) {
-			PRINT(&sign, 1);
-		} else if (flags & HEXPREFIX) {
-			ox[0] = '0';
-			ox[1] = ch;
-			PRINT(ox, 2);
-		}
-
-		/* right-adjusting zero padding */
-		if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD)
-			PAD(width - realsz, zeroes);
-
-		/* leading zeroes from decimal precision */
-		PAD(dprec - size, zeroes);
-
-		/* the string or number proper */
-#ifdef FLOATING_POINT
-		if ((flags & FPT) == 0) {
-			PRINT(cp, size);
-		} else {	/* glue together f_p fragments */
-			if (ch >= 'f') {	/* 'f' or 'g' */
-				if (_double == 0) {
-					/* kludge for __dtoa irregularity */
-					PRINT("0", 1);
-					if (expt < ndig || (flags & ALT) != 0) {
-						PRINT(decimal_point, 1);
-						PAD(ndig - 1, zeroes);
-					}
-				} else if (expt <= 0) {
-					PRINT("0", 1);
-					PRINT(decimal_point, 1);
-					PAD(-expt, zeroes);
-					PRINT(cp, ndig);
-				} else if (expt >= ndig) {
-					PRINT(cp, ndig);
-					PAD(expt - ndig, zeroes);
-					if (flags & ALT)
-						PRINT(".", 1);
-				} else {
-					PRINT(cp, expt);
-					cp += expt;
-					PRINT(".", 1);
-					PRINT(cp, ndig-expt);
-				}
-			} else {	/* 'e' or 'E' */
-				if (ndig > 1 || flags & ALT) {
-					ox[0] = *cp++;
-					ox[1] = '.';
-					PRINT(ox, 2);
-					if (_double) {
-						PRINT(cp, ndig-1);
-					} else {/* 0.[0..] */
-						/* __dtoa irregularity */
-						PAD(ndig - 1, zeroes);
-					}
-				} else { /* XeYYY */
-					PRINT(cp, 1);
-				}
-				PRINT(expstr, expsize);
-			}
-		}
-#else
-		PRINT(cp, size);
-#endif
-		/* left-adjusting padding (always blank) */
-		if (flags & LADJUST)
-			PAD(width - realsz, blanks);
-
-		/* finally, adjust ret */
-		ret += width > realsz ? width : realsz;
-
-		FLUSH();	/* copy out the I/O vectors */
-	}
-done:
-	FLUSH();
-error:
-#ifdef FLOATING_POINT
-	if (dtoaresult != NULL) {
-		__freedtoa(dtoaresult);
-	}
-#endif
-	if (argtable != NULL && argtable != statargtable) {
-		munmap(argtable, argtablesiz);
-		argtable = NULL;
-	}
-        va_end(orgap);
-	return (__sferror(fp) ? EOF : ret);
-	/* NOTREACHED */
-}
-
-/*
- * Type ids for argument type table.
- */
-#define T_UNUSED	0
-#define T_SHORT		1
-#define T_U_SHORT	2
-#define TP_SHORT	3
-#define T_INT		4
-#define T_U_INT		5
-#define TP_INT		6
-#define T_LONG		7
-#define T_U_LONG	8
-#define TP_LONG		9
-#define T_LLONG		10
-#define T_U_LLONG	11
-#define TP_LLONG	12
-#define T_DOUBLE	13
-#define T_LONG_DOUBLE	14
-#define TP_CHAR		15
-#define TP_VOID		16
-#define T_PTRINT	17
-#define TP_PTRINT	18
-#define T_SIZEINT	19
-#define T_SSIZEINT	20
-#define TP_SSIZEINT	21
-#define T_MAXINT	22
-#define T_MAXUINT	23
-#define TP_MAXINT	24
-
-/*
- * Find all arguments when a positional parameter is encountered.  Returns a
- * table, indexed by argument number, of pointers to each arguments.  The
- * initial argument table should be an array of STATIC_ARG_TBL_SIZE entries.
- * It will be replaced with a mmap-ed one if it overflows (malloc cannot be
- * used since we are attempting to make snprintf thread safe, and alloca is
- * problematic since we have nested functions..)
- */
-static int
-__find_arguments(const char *fmt0, va_list ap, union arg **argtable,
-    size_t *argtablesiz)
-{
-	char *fmt;		/* format string */
-	int ch;			/* character from fmt */
-	int n, n2;		/* handy integer (short term usage) */
-	char *cp;		/* handy char pointer (short term usage) */
-	int flags;		/* flags as above */
-	unsigned char *typetable; /* table of types */
-	unsigned char stattypetable[STATIC_ARG_TBL_SIZE];
-	int tablesize;		/* current size of type table */
-	int tablemax;		/* largest used index in table */
-	int nextarg;		/* 1-based argument index */
-	wchar_t wc;
-	void* ps;
-
-	/*
-	 * Add an argument type to the table, expanding if necessary.
-	 */
-#define ADDTYPE(type) \
-	((nextarg >= tablesize) ? \
-		__grow_type_table(&typetable, &tablesize) : 0, \
-	(nextarg > tablemax) ? tablemax = nextarg : 0, \
-	typetable[nextarg++] = type)
-
-#define	ADDSARG() \
-        ((flags&MAXINT) ? ADDTYPE(T_MAXINT) : \
-	    ((flags&PTRINT) ? ADDTYPE(T_PTRINT) : \
-	    ((flags&SIZEINT) ? ADDTYPE(T_SSIZEINT) : \
-	    ((flags&LLONGINT) ? ADDTYPE(T_LLONG) : \
-	    ((flags&LONGINT) ? ADDTYPE(T_LONG) : \
-	    ((flags&SHORTINT) ? ADDTYPE(T_SHORT) : ADDTYPE(T_INT)))))))
-
-#define	ADDUARG() \
-        ((flags&MAXINT) ? ADDTYPE(T_MAXUINT) : \
-	    ((flags&PTRINT) ? ADDTYPE(T_PTRINT) : \
-	    ((flags&SIZEINT) ? ADDTYPE(T_SIZEINT) : \
-	    ((flags&LLONGINT) ? ADDTYPE(T_U_LLONG) : \
-	    ((flags&LONGINT) ? ADDTYPE(T_U_LONG) : \
-	    ((flags&SHORTINT) ? ADDTYPE(T_U_SHORT) : ADDTYPE(T_U_INT)))))))
-
-	/*
-	 * Add * arguments to the type array.
-	 */
-#define ADDASTER() \
-	n2 = 0; \
-	cp = fmt; \
-	while (is_digit(*cp)) { \
-		n2 = 10 * n2 + to_digit(*cp); \
-		cp++; \
-	} \
-	if (*cp == '$') { \
-		int hold = nextarg; \
-		nextarg = n2; \
-		ADDTYPE(T_INT); \
-		nextarg = hold; \
-		fmt = ++cp; \
-	} else { \
-		ADDTYPE(T_INT); \
-	}
-	fmt = (char *)fmt0;
-	typetable = stattypetable;
-	tablesize = STATIC_ARG_TBL_SIZE;
-	tablemax = 0;
-	nextarg = 1;
-	memset(typetable, T_UNUSED, STATIC_ARG_TBL_SIZE);
-	memset(&ps, 0, sizeof(ps));
-
-	/*
-	 * Scan the format for conversions (`%' character).
-	 */
-	for (;;) {
-		cp = fmt;
-#if 1  /* BIONIC */
-                n = -1;
-                while ((wc = *fmt) != 0) {
-                    if (wc == '%') {
-                        n = 1;
-                        break;
-                    }
-                    fmt++;
-                }
-#else
-		while ((n = mbrtowc(&wc, fmt, MB_CUR_MAX, &ps)) > 0) {
-			fmt += n;
-			if (wc == '%') {
-				fmt--;
-				break;
-			}
-		}
-#endif
-		if (n <= 0)
-			goto done;
-		fmt++;		/* skip over '%' */
-
-		flags = 0;
-
-rflag:		ch = *fmt++;
-reswitch:	switch (ch) {
-		case ' ':
-		case '#':
-			goto rflag;
-		case '*':
-			ADDASTER();
-			goto rflag;
-		case '-':
-		case '+':
-			goto rflag;
-		case '.':
-			if ((ch = *fmt++) == '*') {
-				ADDASTER();
-				goto rflag;
-			}
-			while (is_digit(ch)) {
-				ch = *fmt++;
-			}
-			goto reswitch;
-		case '0':
-			goto rflag;
-		case '1': case '2': case '3': case '4':
-		case '5': case '6': case '7': case '8': case '9':
-			n = 0;
-			do {
-				n = 10 * n + to_digit(ch);
-				ch = *fmt++;
-			} while (is_digit(ch));
-			if (ch == '$') {
-				nextarg = n;
-				goto rflag;
-			}
-			goto reswitch;
-#ifdef FLOATING_POINT
-		case 'L':
-			flags |= LONGDBL;
-			goto rflag;
-#endif
-		case 'h':
-			if (*fmt == 'h') {
-				fmt++;
-				flags |= CHARINT;
-			} else {
-				flags |= SHORTINT;
-			}
-			goto rflag;
-		case 'l':
-			if (*fmt == 'l') {
-				fmt++;
-				flags |= LLONGINT;
-			} else {
-				flags |= LONGINT;
-			}
-			goto rflag;
-		case 'q':
-			flags |= LLONGINT;
-			goto rflag;
-		case 't':
-			flags |= PTRINT;
-			goto rflag;
-		case 'z':
-			flags |= SIZEINT;
-			goto rflag;
-		case 'c':
-			ADDTYPE(T_INT);
-			break;
-		case 'D':
-			flags |= LONGINT;
-			/*FALLTHROUGH*/
-		case 'd':
-		case 'i':
-			ADDSARG();
-			break;
-#ifdef FLOATING_POINT
-		case 'e':
-		case 'E':
-		case 'f':
-		case 'g':
-		case 'G':
-			if (flags & LONGDBL)
-				ADDTYPE(T_LONG_DOUBLE);
-			else
-				ADDTYPE(T_DOUBLE);
-			break;
-#endif /* FLOATING_POINT */
-		case 'n':
-			if (flags & LLONGINT)
-				ADDTYPE(TP_LLONG);
-			else if (flags & LONGINT)
-				ADDTYPE(TP_LONG);
-			else if (flags & SHORTINT)
-				ADDTYPE(TP_SHORT);
-			else if (flags & PTRINT)
-				ADDTYPE(TP_PTRINT);
-			else if (flags & SIZEINT)
-				ADDTYPE(TP_SSIZEINT);
-			else if (flags & MAXINT)
-				ADDTYPE(TP_MAXINT);
-			else
-				ADDTYPE(TP_INT);
-			continue;	/* no output */
-		case 'O':
-			flags |= LONGINT;
-			/*FALLTHROUGH*/
-		case 'o':
-			ADDUARG();
-			break;
-		case 'p':
-			ADDTYPE(TP_VOID);
-			break;
-		case 's':
-			ADDTYPE(TP_CHAR);
-			break;
-		case 'U':
-			flags |= LONGINT;
-			/*FALLTHROUGH*/
-		case 'u':
-		case 'X':
-		case 'x':
-			ADDUARG();
-			break;
-		default:	/* "%?" prints ?, unless ? is NUL */
-			if (ch == '\0')
-				goto done;
-			break;
-		}
-	}
-done:
-	/*
-	 * Build the argument table.
-	 */
-	if (tablemax >= STATIC_ARG_TBL_SIZE) {
-		*argtablesiz = sizeof(union arg) * (tablemax + 1);
-		*argtable = mmap(NULL, *argtablesiz,
-		    PROT_WRITE|PROT_READ, MAP_ANON|MAP_PRIVATE, -1, 0);
-		if (*argtable == MAP_FAILED)
-			return (-1);
-	}
-
-#if 0
-	/* XXX is this required? */
-	(*argtable)[0].intarg = 0;
-#endif
-	for (n = 1; n <= tablemax; n++) {
-		switch (typetable[n]) {
-		case T_UNUSED:
-			(*argtable)[n].intarg = va_arg(ap, int);
-			break;
-		case T_SHORT:
-			(*argtable)[n].intarg = va_arg(ap, int);
-			break;
-		case T_U_SHORT:
-			(*argtable)[n].intarg = va_arg(ap, int);
-			break;
-		case TP_SHORT:
-			(*argtable)[n].pshortarg = va_arg(ap, short *);
-			break;
-		case T_INT:
-			(*argtable)[n].intarg = va_arg(ap, int);
-			break;
-		case T_U_INT:
-			(*argtable)[n].uintarg = va_arg(ap, unsigned int);
-			break;
-		case TP_INT:
-			(*argtable)[n].pintarg = va_arg(ap, int *);
-			break;
-		case T_LONG:
-			(*argtable)[n].longarg = va_arg(ap, long);
-			break;
-		case T_U_LONG:
-			(*argtable)[n].ulongarg = va_arg(ap, unsigned long);
-			break;
-		case TP_LONG:
-			(*argtable)[n].plongarg = va_arg(ap, long *);
-			break;
-		case T_LLONG:
-			(*argtable)[n].longlongarg = va_arg(ap, long long);
-			break;
-		case T_U_LLONG:
-			(*argtable)[n].ulonglongarg = va_arg(ap, unsigned long long);
-			break;
-		case TP_LLONG:
-			(*argtable)[n].plonglongarg = va_arg(ap, long long *);
-			break;
-#ifdef FLOATING_POINT
-		case T_DOUBLE:
-			(*argtable)[n].doublearg = va_arg(ap, double);
-			break;
-		case T_LONG_DOUBLE:
-			(*argtable)[n].longdoublearg = va_arg(ap, long double);
-			break;
-#endif
-		case TP_CHAR:
-			(*argtable)[n].pchararg = va_arg(ap, char *);
-			break;
-		case TP_VOID:
-			(*argtable)[n].pvoidarg = va_arg(ap, void *);
-			break;
-		case T_PTRINT:
-			(*argtable)[n].ptrdiffarg = va_arg(ap, ptrdiff_t);
-			break;
-		case TP_PTRINT:
-			(*argtable)[n].pptrdiffarg = va_arg(ap, ptrdiff_t *);
-			break;
-		case T_SIZEINT:
-			(*argtable)[n].sizearg = va_arg(ap, size_t);
-			break;
-		case T_SSIZEINT:
-			(*argtable)[n].ssizearg = va_arg(ap, ssize_t);
-			break;
-		case TP_SSIZEINT:
-			(*argtable)[n].pssizearg = va_arg(ap, ssize_t *);
-			break;
-		case TP_MAXINT:
-			(*argtable)[n].intmaxarg = va_arg(ap, intmax_t);
-			break;
-		}
-	}
-
-	if (typetable != NULL && typetable != stattypetable) {
-		munmap(typetable, *argtablesiz);
-		typetable = NULL;
-	}
-	return (0);
-}
-
-/*
- * Increase the size of the type table.
- */
-static int
-__grow_type_table(unsigned char **typetable, int *tablesize)
-{
-	unsigned char *oldtable = *typetable;
-	int newsize = *tablesize * 2;
-
-	if (*tablesize == STATIC_ARG_TBL_SIZE) {
-		*typetable = mmap(NULL, newsize, PROT_WRITE|PROT_READ,
-		    MAP_ANON|MAP_PRIVATE, -1, 0);
-		if (*typetable == MAP_FAILED)
-			return (-1);
-		memcpy( *typetable, oldtable, *tablesize);
-	} else {
-		unsigned char *new = mmap(NULL, newsize, PROT_WRITE|PROT_READ,
-		    MAP_ANON|MAP_PRIVATE, -1, 0);
-		if (new == MAP_FAILED)
-			return (-1);
-		memmove(new, *typetable, *tablesize);
-		munmap(*typetable, *tablesize);
-		*typetable = new;
-	}
-	memset(*typetable + *tablesize, T_UNUSED, (newsize - *tablesize));
-
-	*tablesize = newsize;
-	return (0);
-}
-
-
-#ifdef FLOATING_POINT
-
-extern char *__dtoa(double, int, int, int *, int *, char **);
-
-static char *
-cvt(double value, int ndigits, int flags, char *sign, int *decpt, int ch,
-    int *length)
-{
-	int mode, dsgn;
-	char *digits, *bp, *rve;
-
-	if (ch == 'f') {
-		mode = 3;		/* ndigits after the decimal point */
-	} else {
-		/* To obtain ndigits after the decimal point for the 'e'
-		 * and 'E' formats, round to ndigits + 1 significant
-		 * figures.
-		 */
-		if (ch == 'e' || ch == 'E') {
-			ndigits++;
-		}
-		mode = 2;		/* ndigits significant digits */
-	}
-
-	if (value < 0) {
-		value = -value;
-		*sign = '-';
-	} else
-		*sign = '\000';
-	digits = __dtoa(value, mode, ndigits, decpt, &dsgn, &rve);
-	if ((ch != 'g' && ch != 'G') || flags & ALT) {/* Print trailing zeros */
-		bp = digits + ndigits;
-		if (ch == 'f') {
-			if (*digits == '0' && value)
-				*decpt = -ndigits + 1;
-			bp += *decpt;
-		}
-		if (value == 0)	/* kludge for __dtoa irregularity */
-			rve = bp;
-		while (rve < bp)
-			*rve++ = '0';
-	}
-	*length = rve - digits;
-	return (digits);
-}
-
-static int
-exponent(char *p0, int exp, int fmtch)
-{
-	char *p, *t;
-	char expbuf[MAXEXP];
-
-	p = p0;
-	*p++ = fmtch;
-	if (exp < 0) {
-		exp = -exp;
-		*p++ = '-';
-	} else
-		*p++ = '+';
-	t = expbuf + MAXEXP;
-	if (exp > 9) {
-		do {
-			*--t = to_char(exp % 10);
-		} while ((exp /= 10) > 9);
-		*--t = to_char(exp);
-		for (; t < expbuf + MAXEXP; *p++ = *t++)
-			/* nothing */;
-	} else {
-		*p++ = '0';
-		*p++ = to_char(exp);
-	}
-	return (p - p0);
-}
-
-#endif /* FLOATING_POINT */