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
|
// RUN: %clang_analyze_cc1 -w -x c -analyzer-checker=core,unix -analyzer-output=text -verify %s
// Avoid the crash when finding the expression for tracking the origins
// of the null pointer for path notes.
void pr34373() {
int *a = 0; // expected-note{{'a' initialized to a null pointer value}}
(a + 0)[0]; // expected-warning{{Array access results in a null pointer dereference}}
// expected-note@-1{{Array access results in a null pointer dereference}}
}
typedef __typeof(sizeof(int)) size_t;
void *memcpy(void *dest, const void *src, unsigned long count);
void f1(char *source) {
char *destination = 0; // expected-note{{'destination' initialized to a null pointer value}}
memcpy(destination + 0, source, 10); // expected-warning{{Null pointer passed as 1st argument to memory copy function}}
// expected-note@-1{{Null pointer passed as 1st argument to memory copy function}}
}
void f2(char *source) {
char *destination = 0; // expected-note{{'destination' initialized to a null pointer value}}
memcpy(destination - 0, source, 10); // expected-warning{{Null pointer passed as 1st argument to memory copy function}}
// expected-note@-1{{Null pointer passed as 1st argument to memory copy function}}
}
void f3(char *source) {
char *destination = 0; // expected-note{{'destination' initialized to a null pointer value}}
destination = destination + 0; // expected-note{{Null pointer value stored to 'destination'}}
memcpy(destination, source, 10); // expected-warning{{Null pointer passed as 1st argument to memory copy function}}
// expected-note@-1{{Null pointer passed as 1st argument to memory copy function}}
}
void f4(char *source) {
char *destination = 0; // expected-note{{'destination' initialized to a null pointer value}}
destination = destination - 0; // expected-note{{Null pointer value stored to 'destination'}}
memcpy(destination, source, 10); // expected-warning{{Null pointer passed as 1st argument to memory copy function}}
// expected-note@-1{{Null pointer passed as 1st argument to memory copy function}}
}
void f5(char *source) {
char *destination1 = 0; // expected-note{{'destination1' initialized to a null pointer value}}
char *destination2 = destination1 + 0; // expected-note{{'destination2' initialized to a null pointer value}}
memcpy(destination2, source, 10); // expected-warning{{Null pointer passed as 1st argument to memory copy function}}
// expected-note@-1{{Null pointer passed as 1st argument to memory copy function}}
}
void f6(char *source) {
char *destination1 = 0; // expected-note{{'destination1' initialized to a null pointer value}}
char *destination2 = destination1 - 0; // expected-note{{'destination2' initialized to a null pointer value}}
memcpy(destination2, source, 10); // expected-warning{{Null pointer passed as 1st argument to memory copy function}}
// expected-note@-1{{Null pointer passed as 1st argument to memory copy function}}
}
|
