1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
|
/**
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0.
*/
#undef memset
#include <proof_helpers/nondet.h>
#include <stddef.h>
/**
* Override the version of memset used by CBMC.
*/
void *memset_impl(void *s, int c, size_t n) {
__CPROVER_precondition(__CPROVER_w_ok(s, n), "memset destination region writeable");
if (n > 0) {
unsigned char *sp = (unsigned char *)s;
for (__CPROVER_size_t i = 0; i < n; i++)
sp[i] = c & UINT8_MAX;
}
return s;
}
void *memset(void *s, int c, size_t n) {
return memset_impl(s, c, n);
}
void *__builtin___memset_chk(void *s, int c, size_t n, size_t os) {
(void)os;
return memset_impl(s, c, n);
}
|
