am d986f2e4: Merge "Sync with upstream OpenBSD stdio."

* commit 'd986f2e4642a0571754cb1349101acf8ac10b484':
  Sync with upstream OpenBSD stdio.

libc/upstream-openbsd/lib/libc/stdio/fgetln.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: fgetln.c,v 1.12 2013/11/12 07:04:06 deraadt Exp $ */
+/*	$OpenBSD: fgetln.c,v 1.13 2015/01/05 21:58:52 millert Exp $ */
 /*-
  * Copyright (c) 1990, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -38,19 +38,12 @@
 
 /*
  * Expand the line buffer.  Return -1 on error.
-#ifdef notdef
- * The `new size' does not account for a terminating '\0',
- * so we add 1 here.
-#endif
  */
 static int
 __slbexpand(FILE *fp, size_t newsize)
 {
 	void *p;
 
-#ifdef notdef
-	++newsize;
-#endif
 	if (fp->_lb._size >= newsize)
 		return (0);
 	if ((p = realloc(fp->_lb._base, newsize)) == NULL)
@@ -141,14 +134,11 @@ fgetln(FILE *fp, size_t *lenp)
 	}
 	*lenp = len;
 	ret = (char *)fp->_lb._base;
-#ifdef notdef
-	ret[len] = '\0';
-#endif
 	FUNLOCKFILE(fp);
 	return (ret);
 
 error:
-	*lenp = 0;		/* ??? */
 	FUNLOCKFILE(fp);
-	return (NULL);		/* ??? */
+	*lenp = 0;
+	return (NULL);
 }

libc/upstream-openbsd/lib/libc/stdio/getdelim.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: getdelim.c,v 1.1 2012/03/21 23:44:35 fgsch Exp $	*/
+/*	$OpenBSD: getdelim.c,v 1.2 2014/10/16 17:31:51 millert Exp $	*/
 /* $NetBSD: getdelim.c,v 1.13 2011/07/22 23:12:30 joerg Exp $ */
 
 /*
@@ -78,13 +78,12 @@ getdelim(char **__restrict buf, size_t *__restrict buflen,
 		else
 			len = (p - fp->_p) + 1;
 
-		newlen = off + len;
 		/* Ensure we can handle it */
-		if (newlen < off || newlen > SSIZE_MAX) {
+		if (off > SSIZE_MAX || len + 1 > SSIZE_MAX - off) {
 			errno = EOVERFLOW;
 			goto error;
 		}
-		newlen++; /* reserve space for the NULL terminator */
+		newlen = off + len + 1; /* reserve space for NUL terminator */
 		if (newlen > *buflen) {
 			if (newlen < MINBUF)
 				newlen = MINBUF;

libc/upstream-openbsd/lib/libc/stdio/makebuf.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: makebuf.c,v 1.8 2005/12/28 18:50:22 millert Exp $ */
+/*	$OpenBSD: makebuf.c,v 1.9 2015/01/13 07:18:21 guenther Exp $ */
 /*-
  * Copyright (c) 1990, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -65,7 +65,6 @@ __smakebuf(FILE *fp)
 		fp->_bf._size = 1;
 		return;
 	}
-	__atexit_register_cleanup(_cleanup);
 	flags |= __SMBF;
 	fp->_bf._base = fp->_p = p;
 	fp->_bf._size = size;

libc/upstream-openbsd/lib/libc/stdio/mktemp.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: mktemp.c,v 1.34 2014/08/31 02:21:18 guenther Exp $ */
+/*	$OpenBSD: mktemp.c,v 1.35 2014/10/31 15:54:14 millert Exp $ */
 /*
  * Copyright (c) 1996-1998, 2008 Theo de Raadt
  * Copyright (c) 1997, 2008-2009 Todd C. Miller
@@ -45,7 +45,7 @@ static int
 mktemp_internal(char *path, int slen, int mode, int flags)
 {
 	char *start, *cp, *ep;
-	const char *tempchars = TEMPCHARS;
+	const char tempchars[] = TEMPCHARS;
 	unsigned int tries;
 	struct stat sb;
 	size_t len;

libc/upstream-openbsd/lib/libc/stdio/open_wmemstream.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: open_wmemstream.c,v 1.3 2014/03/06 07:28:21 gerhard Exp $	*/
+/*	$OpenBSD: open_wmemstream.c,v 1.4 2014/10/08 05:28:19 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2011 Martin Pieuchot <mpi@openbsd.org>
@@ -52,7 +52,7 @@ wmemstream_write(void *v, const char *b, int l)
 
 		if (sz < end + 1)
 			sz = end + 1;
-		p = realloc(st->string, sz * sizeof(wchar_t));
+		p = reallocarray(st->string, sz, sizeof(wchar_t));
 		if (!p)
 			return (-1);
 		bzero(p + st->size, (sz - st->size) * sizeof(wchar_t));

libc/upstream-openbsd/lib/libc/stdio/setvbuf.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: setvbuf.c,v 1.11 2009/11/09 00:18:27 kurt Exp $ */
+/*	$OpenBSD: setvbuf.c,v 1.12 2015/01/13 07:18:21 guenther Exp $ */
 /*-
  * Copyright (c) 1990, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -114,6 +114,13 @@ nbf:
 		flags |= __SMBF;
 	}
 
+	/*
+	 * We're committed to buffering from here, so make sure we've
+	 * registered to flush buffers on exit.
+	 */
+	if (!__sdidinit)
+		__sinit();
+
 	/*
 	 * Kill any seek optimization if the buffer is not the
 	 * right size.
@@ -124,8 +131,7 @@ nbf:
 		flags |= __SNPT;
 
 	/*
-	 * Fix up the FILE fields, and set __cleanup for output flush on
+	 * Fix up the FILE fields.
-	 * exit (since we are buffered in some way).
 	 */
 	if (mode == _IOLBF)
 		flags |= __SLBF;
@@ -148,7 +154,6 @@ nbf:
 		fp->_w = 0;
 	}
 	FUNLOCKFILE(fp);
-	__atexit_register_cleanup(_cleanup);
 
 	return (ret);
 }

libc/upstream-openbsd/lib/libc/stdio/ungetc.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: ungetc.c,v 1.12 2009/11/09 00:18:27 kurt Exp $ */
+/*	$OpenBSD: ungetc.c,v 1.13 2014/10/11 04:05:10 deraadt Exp $ */
 /*-
  * Copyright (c) 1990, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -64,14 +64,14 @@ __submore(FILE *fp)
 		return (0);
 	}
 	i = _UB(fp)._size;
-	p = realloc(_UB(fp)._base, i << 1);
+	p = reallocarray(_UB(fp)._base, i, 2);
 	if (p == NULL)
 		return (EOF);
 	/* no overlap (hence can use memcpy) because we doubled the size */
 	(void)memcpy((void *)(p + i), (void *)p, (size_t)i);
 	fp->_p = p + i;
 	_UB(fp)._base = p;
-	_UB(fp)._size = i << 1;
+	_UB(fp)._size = i * 2;
 	return (0);
 }