diff options
Diffstat (limited to 'stdio')
| -rw-r--r-- | stdio/vsnprintf.c | 35 |
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 |