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-rw-r--r--stdio/vsnprintf.c35
1 files changed, 19 insertions, 16 deletions
diff --git a/stdio/vsnprintf.c b/stdio/vsnprintf.c
index 5de157dc44..ddb1dfc9c0 100644
--- a/stdio/vsnprintf.c
+++ b/stdio/vsnprintf.c
@@ -1,22 +1,21 @@
-/* Copyright (C) 1991, 1992, 1995 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
+/* Copyright (C) 1991, 1992, 1995, 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-Library General Public License for more details.
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB. If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
-#include <ansidecl.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
@@ -33,7 +32,11 @@ __vsnprintf (char *s, size_t maxlen, const char *format, va_list arg)
int done;
FILE f;
- memset((PTR) &f, 0, sizeof(f));
+ /* We have to handle the case of MAXLEN == 0 special. */
+ if (maxlen == 0)
+ return 0;
+
+ memset((void *) &f, 0, sizeof(f));
f.__magic = _IOMAGIC;
f.__mode.__write = 1;
/* The buffer size is one less than MAXLEN