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
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
/* Integration test of how the execution path looks for
-Wanalyzer-tainted-assertion with macro-tracking enabled
(the default). */
/* { dg-additional-options "-fdiagnostics-show-path-depths" } */
/* { dg-additional-options "-fdiagnostics-path-format=inline-events -fdiagnostics-show-caret" } */
/* An assertion macro that has a call to a __noreturn__ function. */
extern void my_assert_fail (const char *expr, const char *file, int line)
__attribute__ ((__noreturn__));
#define MY_ASSERT_1(EXPR) \
do { if (!(EXPR)) my_assert_fail (#EXPR, __FILE__, __LINE__); } while (0) /* { dg-warning "use of attacked-controlled value in condition for assertion \\\[CWE-617\\\] \\\[-Wanalyzer-tainted-assertion\\\]" } */
int __attribute__((tainted_args))
test_tainted_MY_ASSERT_1 (int n)
{
MY_ASSERT_1 (n > 0);
return n * n;
}
/* { dg-begin-multiline-output "" }
do { if (!(EXPR)) my_assert_fail (#EXPR, __FILE__, __LINE__); } while (0)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
{ dg-end-multiline-output "" } */
// note: in expansion of macro 'MY_ASSERT_1'
/* { dg-begin-multiline-output "" }
MY_ASSERT_1 (n > 0);
^~~~~~~~~~~
'test_tainted_MY_ASSERT_1': event 1 (depth 0)
|
| test_tainted_MY_ASSERT_1 (int n)
| ^~~~~~~~~~~~~~~~~~~~~~~~
| |
| (1) function 'test_tainted_MY_ASSERT_1' marked with '__attribute__((tainted_args))'
|
+--> 'test_tainted_MY_ASSERT_1': event 2 (depth 1)
|
| test_tainted_MY_ASSERT_1 (int n)
| ^~~~~~~~~~~~~~~~~~~~~~~~
| |
| (2) entry to 'test_tainted_MY_ASSERT_1'
|
'test_tainted_MY_ASSERT_1': event 3 (depth 1)
|
| do { if (!(EXPR)) my_assert_fail (#EXPR, __FILE__, __LINE__); } while (0)
| ^
| |
| (3) use of attacker-controlled value for control flow
{ dg-end-multiline-output "" } */
// note: in expansion of macro 'MY_ASSERT_1'
/* { dg-begin-multiline-output "" }
| MY_ASSERT_1 (n > 0);
| ^~~~~~~~~~~
|
'test_tainted_MY_ASSERT_1': event 4 (depth 1)
|
| do { if (!(EXPR)) my_assert_fail (#EXPR, __FILE__, __LINE__); } while (0)
| ^
| |
| (4) following 'true' branch (when 'n <= 0')...
{ dg-end-multiline-output "" } */
// note: in expansion of macro 'MY_ASSERT_1'
/* { dg-begin-multiline-output "" }
| MY_ASSERT_1 (n > 0);
| ^~~~~~~~~~~
|
'test_tainted_MY_ASSERT_1': event 5 (depth 1)
|
| do { if (!(EXPR)) my_assert_fail (#EXPR, __FILE__, __LINE__); } while (0)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| |
| (5) ...to here
{ dg-end-multiline-output "" } */
// note: in expansion of macro 'MY_ASSERT_1'
/* { dg-begin-multiline-output "" }
| MY_ASSERT_1 (n > 0);
| ^~~~~~~~~~~
|
'test_tainted_MY_ASSERT_1': event 6 (depth 1)
|
| do { if (!(EXPR)) my_assert_fail (#EXPR, __FILE__, __LINE__); } while (0)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| |
| (6) treating 'my_assert_fail' as an assertion failure handler due to '__attribute__((__noreturn__))'
{ dg-end-multiline-output "" } */
// note: in expansion of macro 'MY_ASSERT_1'
/* { dg-begin-multiline-output "" }
| MY_ASSERT_1 (n > 0);
| ^~~~~~~~~~~
|
{ dg-end-multiline-output "" } */
|
