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
|
// RUN: %clang_cc1 -w -fblocks -analyze -analyzer-checker=core,deadcode,alpha.core,debug.ExprInspection -verify %s
void *malloc(unsigned long);
void clang_analyzer_warnIfReached();
void test_static_from_block() {
static int *x;
^{
*x; // no-warning
};
}
void test_static_within_block() {
^{
static int *x;
*x; // expected-warning{{Dereference of null pointer}}
};
}
void test_static_control_flow(int y) {
static int *x;
if (x) {
// FIXME: Should be reachable.
clang_analyzer_warnIfReached(); // no-warning
}
if (y) {
// We are not sure if this branch is possible, because the developer
// may argue that function is always called with y == 1 for the first time.
// In this case, we can only advise the developer to add assertions
// for suppressing such path.
*x; // expected-warning{{Dereference of null pointer}}
} else {
x = malloc(1);
}
}
|
