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asdl.c
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#include
"Python.h"
#include
"asdl.h"
asdl_seq
*
_Py_asdl_seq_new
(
Py_ssize_t
size
,
PyArena
*
arena
)
{
asdl_seq
*
seq
=
NULL
;
size_t
n
;
/* check size is sane */
if
(
size
<
0
||
(
size
&&
(((
size_t
)
size
-
1
)
>
(
SIZE_MAX
/
sizeof
(
void
*
))))) {
PyErr_NoMemory
();
return
NULL
;
}
n
=
(
size
? (
sizeof
(
void
*
)
*
(
size
-
1
)) :
0
);
/* check if size can be added safely */
if
(
n
>
SIZE_MAX
-
sizeof
(
asdl_seq
)) {
PyErr_NoMemory
();
return
NULL
;
}
n
+=
sizeof
(
asdl_seq
);
seq
=
(
asdl_seq
*
)
PyArena_Malloc
(
arena
,
n
);
if
(!
seq
) {
PyErr_NoMemory
();
return
NULL
;
}
memset
(
seq
,
0
,
n
);
seq
->
size
=
size
;
return
seq
;
}
asdl_int_seq
*
_Py_asdl_int_seq_new
(
Py_ssize_t
size
,
PyArena
*
arena
)
{
asdl_int_seq
*
seq
=
NULL
;
size_t
n
;
/* check size is sane */
if
(
size
<
0
||
(
size
&&
(((
size_t
)
size
-
1
)
>
(
SIZE_MAX
/
sizeof
(
void
*
))))) {
PyErr_NoMemory
();
return
NULL
;
}
n
=
(
size
? (
sizeof
(
void
*
)
*
(
size
-
1
)) :
0
);
/* check if size can be added safely */
if
(
n
>
SIZE_MAX
-
sizeof
(
asdl_seq
)) {
PyErr_NoMemory
();
return
NULL
;
}
n
+=
sizeof
(
asdl_seq
);
seq
=
(
asdl_int_seq
*
)
PyArena_Malloc
(
arena
,
n
);
if
(!
seq
) {
PyErr_NoMemory
();
return
NULL
;
}
memset
(
seq
,
0
,
n
);
seq
->
size
=
size
;
return
seq
;
}
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