1 // RUN: %check_clang_tidy %s readability-redundant-function-ptr-dereference %t
2
3 void f(int i);
4
positive()5 void positive() {
6 void (*p)(int) = f;
7
8 (**p)(1);
9 // CHECK-MESSAGES: :[[@LINE-1]]:4: warning: redundant repeated dereference of function pointer [readability-redundant-function-ptr-dereference]
10 // CHECK-FIXES: (*p)(1);
11 (*****p)(2);
12 // CHECK-MESSAGES: :[[@LINE-1]]:4: warning: redundant repeated
13 // CHECK-MESSAGES: :[[@LINE-2]]:5: warning: redundant repeated
14 // CHECK-MESSAGES: :[[@LINE-3]]:6: warning: redundant repeated
15 // CHECK-MESSAGES: :[[@LINE-4]]:7: warning: redundant repeated
16 // CHECK-FIXES: (*p)(2);
17 }
18
19 template<typename T>
invoke(const T & fn)20 void invoke(const T& fn) {
21 fn(0); // 1
22 (*fn)(0); // 2
23 // CHECK-MESSAGES: :[[@LINE-1]]:4: warning: redundant repeated
24 // CHECK-FIXES: fn(0); // 1
25 // CHECK-FIXES: (fn)(0); // 2
26 // FIXME: Remove unnecessary parentheses.
27 }
28
29 void f1(int);
30 void f2(double);
31 void f3(char);
32
instantiate()33 void instantiate() {
34 invoke(f1);
35 invoke(f2);
36 invoke(f3);
37 invoke([](unsigned) {});
38 }
39
negative()40 void negative() {
41 void (*q)(int) = &f;
42
43 q(1);
44 (*q)(2);
45 }
46