source: python/trunk/Python/asdl.c@ 1538

Last change on this file since 1538 was 391, checked in by dmik, 12 years ago

python: Merge vendor 2.7.6 to trunk.
  • Property svn:eol-style set to native
File size: 1.4 KB
Line 
1#include "Python.h"
2#include "asdl.h"
3
4asdl_seq *
5asdl_seq_new(int size, PyArena *arena)
6{
7 asdl_seq *seq = NULL;
8 size_t n = (size ? (sizeof(void *) * (size - 1)) : 0);
9
10 /* check size is sane */
11 if (size < 0 || size == INT_MIN ||
12 (size && ((size - 1) > (PY_SIZE_MAX / sizeof(void *))))) {
13 PyErr_NoMemory();
14 return NULL;
15 }
16
17 /* check if size can be added safely */
18 if (n > PY_SIZE_MAX - sizeof(asdl_seq)) {
19 PyErr_NoMemory();
20 return NULL;
21 }
22
23 n += sizeof(asdl_seq);
24
25 seq = (asdl_seq *)PyArena_Malloc(arena, n);
26 if (!seq) {
27 PyErr_NoMemory();
28 return NULL;
29 }
30 memset(seq, 0, n);
31 seq->size = size;
32 return seq;
33}
34
35asdl_int_seq *
36asdl_int_seq_new(int size, PyArena *arena)
37{
38 asdl_int_seq *seq = NULL;
39 size_t n = (size ? (sizeof(void *) * (size - 1)) : 0);
40
41 /* check size is sane */
42 if (size < 0 || size == INT_MIN ||
43 (size && ((size - 1) > (PY_SIZE_MAX / sizeof(void *))))) {
44 PyErr_NoMemory();
45 return NULL;
46 }
47
48 /* check if size can be added safely */
49 if (n > PY_SIZE_MAX - sizeof(asdl_seq)) {
50 PyErr_NoMemory();
51 return NULL;
52 }
53
54 n += sizeof(asdl_seq);
55
56 seq = (asdl_int_seq *)PyArena_Malloc(arena, n);
57 if (!seq) {
58 PyErr_NoMemory();
59 return NULL;
60 }
61 memset(seq, 0, n);
62 seq->size = size;
63 return seq;
64}
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