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 (34 lines) | stat: -rw-r--r-- 882 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
#include <assert.h>
#include <stdlib.h>

char c1;

void main()
{
  // We check the conditions for a pointer to global static memory (p1), a
  // pointer to local memory (p2), and a pointer to dynamic memory (p3).
  // For each pointer, we check:
  // (1) whether it is unsafe to access one byte more than was allocated
  // (2) whether it is unsafe to access one byte before the allocated memory
  // (3) whether it is unsafe to access one byte after the allocated memory

  char c2;

  char *p1 = &c1;

  assert(!__CPROVER_r_ok(p1, 2));
  assert(!__CPROVER_r_ok(p1 - 1, 1));
  assert(!__CPROVER_r_ok(p1 + 1, 1));

  char *p2 = &c2;

  assert(!__CPROVER_r_ok(p2, 2));
  assert(!__CPROVER_r_ok(p2 - 1, 1));
  assert(!__CPROVER_r_ok(p2 + 1, 1));

  char *p3 = malloc(1);

  assert(!__CPROVER_r_ok(p3, 2));
  assert(!__CPROVER_r_ok(p3 - 1, 1));
  assert(!__CPROVER_r_ok(p3 + 1, 1));
}