xref: /netbsd-src/external/gpl3/gdb/dist/gdbsupport/gdb_obstack.cc (revision f8cf1a9151c7af1cb0bd8b09c13c66bca599c027)
1 /* Obstack wrapper for GDB.
2 
3    Copyright (C) 2013-2024 Free Software Foundation, Inc.
4 
5    This file is part of GDB.
6 
7    This program is free software; you can redistribute it and/or modify
8    it under the terms of the GNU General Public License as published by
9    the Free Software Foundation; either version 3 of the License, or
10    (at your option) any later version.
11 
12    This program 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
15    GNU General Public License for more details.
16 
17    You should have received a copy of the GNU General Public License
18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
19 
20 #include "gdb_obstack.h"
21 
22 /* Concatenate NULL terminated variable argument list of `const char *'
23    strings; return the new string.  Space is found in the OBSTACKP.
24    Argument list must be terminated by a sentinel expression `(char *)
25    NULL'.  */
26 
27 char *
28 obconcat (struct obstack *obstackp, ...)
29 {
30   va_list ap;
31 
32   va_start (ap, obstackp);
33   for (;;)
34     {
35       const char *s = va_arg (ap, const char *);
36 
37       if (s == NULL)
38 	break;
39 
40       obstack_grow_str (obstackp, s);
41     }
42   va_end (ap);
43   obstack_1grow (obstackp, 0);
44 
45   return (char *) obstack_finish (obstackp);
46 }
47