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v0.5.1
https://github.com/python/cpython
09 December 2020, 11:06:31 UTC
Revision a16ac4e43c8ed15bf2fca52df3a0a5de26ad2705 authored by Miss Islington (bot) on 17 July 2020, 16:53:56 UTC, committed by GitHub on 17 July 2020, 16:53:56 UTC 
bpo-41304: Update NEWS to include CVE-2020-15801 reference (GH-21521)
 
(cherry picked from commit 164b04c47e61bd35d55e61bc74f9fd646eba81bb)

Co-authored-by: Steve Dower <steve.dower@python.org>
1 parent 5a7aa28
Raw File
Tip revision: a16ac4e43c8ed15bf2fca52df3a0a5de26ad2705 authored by Miss Islington (bot) on 17 July 2020, 16:53:56 UTC
bpo-41304: Update NEWS to include CVE-2020-15801 reference (GH-21521)
Tip revision: a16ac4e
asdl.c 
#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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