python/Python/asdl.c at master · java66liu/python · GitHub

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#include "Python.h"

#include "asdl.h"

asdl_seq *

asdl_seq_new(int size, PyArena *arena)

{

asdl_seq *seq = NULL;

size_t n = (size ? (sizeof(void *) * (size - 1)) : 0);

/* check size is sane */

if (size < 0 || size == INT_MIN ||

(size && ((size - 1) > (PY_SIZE_MAX / sizeof(void *))))) {

PyErr_NoMemory();

return NULL;

}

/* check if size can be added safely */

if (n > PY_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 *

asdl_int_seq_new(int size, PyArena *arena)

{

asdl_int_seq *seq = NULL;

size_t n = (size ? (sizeof(void *) * (size - 1)) : 0);

/* check size is sane */

if (size < 0 || size == INT_MIN ||

(size && ((size - 1) > (PY_SIZE_MAX / sizeof(void *))))) {

PyErr_NoMemory();

return NULL;

}

/* check if size can be added safely */

if (n > PY_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;

}

python/Python/asdl.c at master · java66liu/python · GitHub

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