1
2// Currently the check is performed for apple targets only.
3void test(const char *path) {
4 int fd = open(path, O_CREAT);
5 // warn: call to 'open' requires a third argument when the
6 // 'O_CREAT' flag is set
7}
8
9void f();
10
11void test() {
12 pthread_once_t pred = {0x30B1BCBA, {0}};
13 pthread_once(&pred, f);
14 // warn: call to 'pthread_once' uses the local variable
15}
16
17void test() {
18 void *p = malloc(0); // warn: allocation size of 0 bytes
19}
20
21void test() {
22 void *p = calloc(0, 42); // warn: allocation size of 0 bytes
23}
24
25void test() {
26 void *p = malloc(1);
27 p = realloc(p, 0); // warn: allocation size of 0 bytes
28}
29
30void test() {
31 void *p = alloca(0); // warn: allocation size of 0 bytes
32}
33
34void test() {
35 void *p = valloc(0); // warn: allocation size of 0 bytes
36}
37
38

source code of clang/docs/analyzer/checkers/unix_api_example.c