misc-non-copyable-objects.c
2.06 KB
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
// RUN: %check_clang_tidy %s misc-non-copyable-objects %t
typedef struct FILE {} FILE;
typedef struct pthread_cond_t {} pthread_cond_t;
typedef int pthread_mutex_t;
// CHECK-MESSAGES: :[[@LINE+1]]:13: warning: 'f' declared as type 'FILE', which is unsafe to copy; did you mean 'FILE *'? [misc-non-copyable-objects]
void g(FILE f);
// CHECK-MESSAGES: :[[@LINE+1]]:24: warning: 'm' declared as type 'pthread_mutex_t', which is unsafe to copy; did you mean 'pthread_mutex_t *'?
void h(pthread_mutex_t m);
// CHECK-MESSAGES: :[[@LINE+1]]:23: warning: 'c' declared as type 'pthread_cond_t', which is unsafe to copy; did you mean 'pthread_cond_t *'?
void i(pthread_cond_t c);
struct S {
pthread_cond_t c; // ok
// CHECK-MESSAGES: :[[@LINE+1]]:8: warning: 'f' declared as type 'FILE', which is unsafe to copy; did you mean 'FILE *'?
FILE f;
};
void func(FILE *f) {
// CHECK-MESSAGES: :[[@LINE+1]]:8: warning: 'f1' declared as type 'FILE', which is unsafe to copy; did you mean 'FILE *'?
FILE f1; // match
// CHECK-MESSAGES: :[[@LINE+2]]:8: warning: 'f2' declared as type 'FILE', which is unsafe to copy; did you mean 'FILE *'?
// CHECK-MESSAGES: :[[@LINE+1]]:13: warning: expression has opaque data structure type 'FILE'; type should only be used as a pointer and not dereferenced
FILE f2 = *f;
// CHECK-MESSAGES: :[[@LINE+1]]:15: warning: 'f3' declared as type 'FILE', which is unsafe to copy; did you mean 'FILE *'?
struct FILE f3;
// CHECK-MESSAGES: :[[@LINE+1]]:16: warning: expression has opaque data structure type 'FILE'; type should only be used as a pointer and not dereferenced
(void)sizeof(*f);
(void)sizeof(FILE);
// CHECK-MESSAGES: :[[@LINE+1]]:5: warning: expression has opaque data structure type 'FILE'; type should only be used as a pointer and not dereferenced
g(*f);
pthread_mutex_t m; // ok
h(m); // ok
pthread_cond_t c; // ok
i(c); // ok
pthread_mutex_t *m1 = &m; // ok
// CHECK-MESSAGES: :[[@LINE+1]]:5: warning: expression has opaque data structure type 'pthread_mutex_t'; type should only be used as a pointer and not dereferenced
h(*m1);
}