1 // RUN: %check_clang_tidy %s bugprone-shared-ptr-array-mismatch %t
2 
3 namespace std {
4 
5 template <typename T>
6 struct shared_ptr {
7   template <class Y>
8   explicit shared_ptr(Y *) {}
9   template <class Y, class Deleter>
10   shared_ptr(Y *, Deleter) {}
11 };
12 
13 } // namespace std
14 
15 struct A {};
16 
17 void f1() {
18   std::shared_ptr<int> P1{new int};
19   std::shared_ptr<int> P2{new int[10]};
20   // CHECK-MESSAGES: :[[@LINE-1]]:27: warning: shared pointer to non-array is initialized with array [bugprone-shared-ptr-array-mismatch]
21   // CHECK-FIXES: std::shared_ptr<int[]> P2{new int[10]};
22   // clang-format off
23   std::shared_ptr<  int  > P3{new int[10]};
24   // CHECK-MESSAGES: :[[@LINE-1]]:31: warning: shared pointer to non-array is initialized with array [bugprone-shared-ptr-array-mismatch]
25   // CHECK-FIXES: std::shared_ptr<  int[]  > P3{new int[10]};
26   // clang-format on
27   std::shared_ptr<int> P4(new int[10]);
28   // CHECK-MESSAGES: :[[@LINE-1]]:27: warning: shared pointer to non-array is initialized with array [bugprone-shared-ptr-array-mismatch]
29   // CHECK-FIXES: std::shared_ptr<int[]> P4(new int[10]);
30   new std::shared_ptr<int>(new int[10]);
31   // CHECK-MESSAGES: :[[@LINE-1]]:28: warning: shared pointer to non-array is initialized with array [bugprone-shared-ptr-array-mismatch]
32   std::shared_ptr<int[]> P5(new int[10]);
33   std::shared_ptr<int> P6(new int[10], [](const int *Ptr) {});
34 }
35 
36 void f2() {
37   std::shared_ptr<A> P1(new A);
38   std::shared_ptr<A> P2(new A[10]);
39   // CHECK-MESSAGES: :[[@LINE-1]]:25: warning: shared pointer to non-array is initialized with array [bugprone-shared-ptr-array-mismatch]
40   // CHECK-FIXES: std::shared_ptr<A[]> P2(new A[10]);
41   std::shared_ptr<A[]> P3(new A[10]);
42 }
43 
44 void f3() {
45   std::shared_ptr<int> P1{new int}, P2{new int[10]}, P3{new int[10]};
46   // CHECK-MESSAGES: :[[@LINE-1]]:40: warning: shared pointer to non-array is initialized with array [bugprone-shared-ptr-array-mismatch]
47   // CHECK-MESSAGES: :[[@LINE-2]]:57: warning: shared pointer to non-array is initialized with array [bugprone-shared-ptr-array-mismatch]
48 }
49 
50 struct S {
51   std::shared_ptr<int> P1;
52   std::shared_ptr<int> P2{new int[10]};
53   // CHECK-MESSAGES: :[[@LINE-1]]:27: warning: shared pointer to non-array is initialized with array [bugprone-shared-ptr-array-mismatch]
54   std::shared_ptr<int> P3{new int}, P4{new int[10]};
55   // CHECK-MESSAGES: :[[@LINE-1]]:40: warning: shared pointer to non-array is initialized with array [bugprone-shared-ptr-array-mismatch]
56   S() : P1{new int[10]} {}
57   // CHECK-MESSAGES: :[[@LINE-1]]:12: warning: shared pointer to non-array is initialized with array [bugprone-shared-ptr-array-mismatch]
58 };
59 
60 void f_parm(std::shared_ptr<int>);
61 
62 void f4() {
63   f_parm(std::shared_ptr<int>{new int[10]});
64   // CHECK-MESSAGES: :[[@LINE-1]]:31: warning: shared pointer to non-array is initialized with array [bugprone-shared-ptr-array-mismatch]
65 }
66 
67 std::shared_ptr<int> f_ret() {
68   return std::shared_ptr<int>(new int[10]);
69   // CHECK-MESSAGES: :[[@LINE-1]]:31: warning: shared pointer to non-array is initialized with array [bugprone-shared-ptr-array-mismatch]
70 }
71 
72 template <class T>
73 void f_tmpl() {
74   std::shared_ptr<T> P1{new T[10]};
75 }
76 
77 void f5() {
78   f_tmpl<char>();
79 }
80 
81 #define CHAR_PTR_TYPE std::shared_ptr<char>
82 #define CHAR_PTR_VAR(X) \
83   X { new char[10] }
84 #define CHAR_PTR_INIT(X, Y) \
85   std::shared_ptr<char> X { Y }
86 
87 void f6() {
88   CHAR_PTR_TYPE P1{new char[10]};
89   // CHECK-MESSAGES: :[[@LINE-1]]:20: warning: shared pointer to non-array is initialized with array [bugprone-shared-ptr-array-mismatch]
90   std::shared_ptr<char> CHAR_PTR_VAR(P2);
91   // CHECK-MESSAGES: :[[@LINE-1]]:25: warning: shared pointer to non-array is initialized with array [bugprone-shared-ptr-array-mismatch]
92   // CHECK-FIXES: std::shared_ptr<char[]> CHAR_PTR_VAR(P2);
93   CHAR_PTR_INIT(P3, new char[10]);
94   // CHECK-MESSAGES: :[[@LINE-1]]:21: warning: shared pointer to non-array is initialized with array [bugprone-shared-ptr-array-mismatch]
95 }
96