Remove more stdio copy/paste.

Change-Id: Ia92629b75d2c153ecf1cec711e2f9575eef604ab
diff --git a/libc/stdio/snprintf.c b/libc/stdio/snprintf.c
deleted file mode 100644
index 9a25ef2..0000000
--- a/libc/stdio/snprintf.c
+++ /dev/null
@@ -1,68 +0,0 @@
-/*	$OpenBSD: snprintf.c,v 1.14 2005/10/10 12:00:52 espie 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.
- */
-
-#undef _FORTIFY_SOURCE
-#include <limits.h>
-#include <stdio.h>
-#include <string.h>
-#include <stdarg.h>
-#include "local.h"
-
-int
-snprintf(char *str, size_t n, const char *fmt, ...)
-{
-	va_list ap;
-	int ret;
-	char dummy;
-	FILE f;
-	struct __sfileext fext;
-
-	/* While snprintf(3) specifies size_t stdio uses an int internally */
-	if (n > INT_MAX)
-		n = INT_MAX;
-	/* Stdio internals do not deal correctly with zero length buffer */
-	if (n == 0) {
-		str = &dummy;
-		n = 1;
-	}
-	_FILEEXT_SETUP(&f, &fext);
-	f._file = -1;
-	f._flags = __SWR | __SSTR;
-	f._bf._base = f._p = (unsigned char *)str;
-	f._bf._size = f._w = n - 1;
-	va_start(ap, fmt);
-	ret = __vfprintf(&f, fmt, ap);
-	va_end(ap);
-	*f._p = '\0';
-	return (ret);
-}
diff --git a/libc/stdio/sprintf.c b/libc/stdio/sprintf.c
deleted file mode 100644
index 1245552..0000000
--- a/libc/stdio/sprintf.c
+++ /dev/null
@@ -1,64 +0,0 @@
-/*	$OpenBSD: sprintf.c,v 1.13 2005/10/10 12:00:52 espie 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.
- */
-
-#undef _FORTIFY_SOURCE
-#include <stdio.h>
-#include <string.h>
-#include <stdarg.h>
-#include <limits.h>
-#include "local.h"
-
-#if defined(APIWARN)
-__warn_references(sprintf,
-    "warning: sprintf() is often misused, please use snprintf()");
-#endif
-
-int
-sprintf(char *str, const char *fmt, ...)
-{
-	int ret;
-	va_list ap;
-	FILE f;
-	struct __sfileext fext;
-
-	_FILEEXT_SETUP(&f, &fext);
-	f._file = -1;
-	f._flags = __SWR | __SSTR;
-	f._bf._base = f._p = (unsigned char *)str;
-	f._bf._size = f._w = INT_MAX;
-	va_start(ap, fmt);
-	ret = __vfprintf(&f, fmt, ap);
-	va_end(ap);
-	*f._p = '\0';
-	return (ret);
-}
diff --git a/libc/stdio/stdio.cpp b/libc/stdio/stdio.cpp
index 23a54de..c673611 100644
--- a/libc/stdio/stdio.cpp
+++ b/libc/stdio/stdio.cpp
@@ -31,6 +31,7 @@
  * SUCH DAMAGE.
  */
 
+#define __BIONIC_NO_STDIO_FORTIFY
 #include <stdio.h>
 
 #include <errno.h>
@@ -643,6 +644,10 @@
   return fp;
 }
 
+int asprintf(char** s, const char* fmt, ...) {
+  PRINTF_IMPL(vasprintf(s, fmt, ap));
+}
+
 char* ctermid(char* s) {
   return s ? strcpy(s, _PATH_TTY) : const_cast<char*>(_PATH_TTY);
 }
@@ -769,6 +774,18 @@
   return setvbuf(fp, nullptr, _IOLBF, 0);
 }
 
+int snprintf(char* s, size_t n, const char* fmt, ...) {
+  PRINTF_IMPL(vsnprintf(s, n, fmt, ap));
+}
+
+int sprintf(char* s, const char* fmt, ...) {
+  PRINTF_IMPL(vsnprintf(s, INT_MAX, fmt, ap));
+}
+
+int sscanf(const char* s, const char* fmt, ...) {
+  PRINTF_IMPL(vsscanf(s, fmt, ap));
+}
+
 int swprintf(wchar_t* s, size_t n, const wchar_t* fmt, ...) {
   PRINTF_IMPL(vswprintf(s, n, fmt, ap));
 }
@@ -785,6 +802,10 @@
   return vfscanf(stdin, fmt, ap);
 }
 
+int vsprintf(char* s, const char* fmt, va_list ap) {
+  return vsnprintf(s, INT_MAX, fmt, ap);
+}
+
 int vwprintf(const wchar_t* fmt, va_list ap) {
   return vfwprintf(stdout, fmt, ap);
 }