File: main.c

package info (click to toggle)
cbmc 6.6.0-4
  • links: PTS
  • area: main
  • in suites: forky, sid, trixie
  • size: 153,852 kB
  • sloc: cpp: 386,459; ansic: 114,466; java: 28,405; python: 6,003; yacc: 4,552; makefile: 4,041; lex: 2,487; xml: 2,388; sh: 2,050; perl: 557; pascal: 184; javascript: 163; ada: 36
file content (41 lines) | stat: -rw-r--r-- 745 bytes parent folder | download 
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
32
33
34
35
36
37
38
39
40
41
 
#include <stdint.h>
#include <stdlib.h>

typedef struct
{
  uint8_t *buf;
  size_t size;
} blob;

void foo(blob *b, uint8_t *value)
  // clang-format off
__CPROVER_requires(b->size == 5)
__CPROVER_assigns(__CPROVER_object_whole(b->buf))
__CPROVER_assigns(__CPROVER_object_whole(value))
__CPROVER_ensures(b->buf[0] == 1)
__CPROVER_ensures(b->buf[1] == 1)
__CPROVER_ensures(b->buf[2] == 1)
__CPROVER_ensures(b->buf[3] == 1)
__CPROVER_ensures(b->buf[4] == 1)
// clang-format on
{
  b->buf[0] = *value;
  b->buf[1] = *value;
  b->buf[2] = *value;
  b->buf[3] = *value;
  b->buf[4] = *value;

  *value = 2;
}

int main()
{
  blob b;
  b.size = 5;
  b.buf = malloc(b.size * (sizeof(*(b.buf))));
  uint8_t value = 1;

  foo(&b, &value);

  return 0;
}