1 /* Shared general utility routines for GDB, the GNU debugger.
3 Copyright (C) 1986-2015 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
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.
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/>. */
20 #include "common-defs.h"
22 /* The xmalloc() (libiberty.h) family of memory management routines.
24 These are like the ISO-C malloc() family except that they implement
25 consistent semantics and guard against typical memory management
28 /* NOTE: These are declared using PTR to ensure consistency with
29 "libiberty.h". xfree() is GDB local. */
36 /* See libiberty/xmalloc.c. This function need's to match that's
37 semantics. It never returns NULL. */
41 val
= malloc (size
); /* ARI: malloc */
43 malloc_failure (size
);
49 xrealloc (PTR ptr
, size_t size
) /* ARI: PTR */
53 /* See libiberty/xmalloc.c. This function need's to match that's
54 semantics. It never returns NULL. */
59 val
= realloc (ptr
, size
); /* ARI: realloc */
61 val
= malloc (size
); /* ARI: malloc */
63 malloc_failure (size
);
69 xcalloc (size_t number
, size_t size
)
73 /* See libiberty/xmalloc.c. This function need's to match that's
74 semantics. It never returns NULL. */
75 if (number
== 0 || size
== 0)
81 mem
= calloc (number
, size
); /* ARI: xcalloc */
83 malloc_failure (number
* size
);
91 return xcalloc (1, size
);
98 free (ptr
); /* ARI: free */
101 /* Like asprintf/vasprintf but get an internal_error if the call
105 xstrprintf (const char *format
, ...)
110 va_start (args
, format
);
111 ret
= xstrvprintf (format
, args
);
117 xstrvprintf (const char *format
, va_list ap
)
120 int status
= vasprintf (&ret
, format
, ap
);
122 /* NULL is returned when there was a memory allocation problem, or
123 any other error (for instance, a bad format string). A negative
124 status (the printed length) with a non-NULL buffer should never
125 happen, but just to be sure. */
126 if (ret
== NULL
|| status
< 0)
127 internal_error (__FILE__
, __LINE__
, _("vasprintf call failed"));
132 xsnprintf (char *str
, size_t size
, const char *format
, ...)
137 va_start (args
, format
);
138 ret
= vsnprintf (str
, size
, format
, args
);
139 gdb_assert (ret
< size
);
146 savestring (const char *ptr
, size_t len
)
148 char *p
= (char *) xmalloc (len
+ 1);
150 memcpy (p
, ptr
, len
);
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