1 /* Like sprintf but provides a pointer to malloc'd storage, which must
2    be freed by the caller.
3    Copyright (C) 1997-2018 Free Software Foundation, Inc.
4    Contributed by Cygnus Solutions.
5 
6 This file is part of the libiberty library.
7 Libiberty is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Library General Public
9 License as published by the Free Software Foundation; either
10 version 2 of the License, or (at your option) any later version.
11 
12 Libiberty is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15 Library General Public License for more details.
16 
17 You should have received a copy of the GNU Library General Public
18 License along with libiberty; see the file COPYING.LIB.  If
19 not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 Boston, MA 02110-1301, USA.  */
21 
22 #ifdef HAVE_CONFIG_H
23 #include "config.h"
24 #endif
25 #include "ansidecl.h"
26 #include "libiberty.h"
27 
28 #include <stdarg.h>
29 
30 /*
31 
32 @deftypefn Extension int asprintf (char **@var{resptr}, const char *@var{format}, ...)
33 
34 Like @code{sprintf}, but instead of passing a pointer to a buffer, you
35 pass a pointer to a pointer.  This function will compute the size of
36 the buffer needed, allocate memory with @code{malloc}, and store a
37 pointer to the allocated memory in @code{*@var{resptr}}.  The value
38 returned is the same as @code{sprintf} would return.  If memory could
39 not be allocated, minus one is returned and @code{NULL} is stored in
40 @code{*@var{resptr}}.
41 
42 @end deftypefn
43 
44 */
45 
46 int
asprintf(char ** buf,const char * fmt,...)47 asprintf (char **buf, const char *fmt, ...)
48 {
49   int status;
50   va_list ap;
51   va_start (ap, fmt);
52   status = vasprintf (buf, fmt, ap);
53   va_end (ap);
54   return status;
55 }
56