1 // RUN: %check_clang_tidy %s cppcoreguidelines-no-malloc %t \
2 // RUN: -config='{CheckOptions: \
3 // RUN: [{key: cppcoreguidelines-no-malloc.Allocations, value: "::malloc;::align_malloc;::calloc"},\
4 // RUN: {key: cppcoreguidelines-no-malloc.Reallocations, value: "::realloc;::align_realloc"},\
5 // RUN: {key: cppcoreguidelines-no-malloc.Deallocations, value: "::free;::align_free"}]}' \
6 // RUN: --
7
8 using size_t = __SIZE_TYPE__;
9
10 void *malloc(size_t size);
11 void *align_malloc(size_t size, unsigned short alignment);
12 void *calloc(size_t num, size_t size);
13 void *realloc(void *ptr, size_t size);
14 void *align_realloc(void *ptr, size_t size, unsigned short alignment);
15 void free(void *ptr);
16 void *align_free(void *ptr);
17
malloced_array()18 void malloced_array() {
19 int *array0 = (int *)malloc(sizeof(int) * 20);
20 // CHECK-MESSAGES: :[[@LINE-1]]:24: warning: do not manage memory manually; consider a container or a smart pointer [cppcoreguidelines-no-malloc]
21
22 int *zeroed = (int *)calloc(20, sizeof(int));
23 // CHECK-MESSAGES: :[[@LINE-1]]:24: warning: do not manage memory manually; consider a container or a smart pointer [cppcoreguidelines-no-malloc]
24
25 int *aligned = (int *)align_malloc(20 * sizeof(int), 16);
26 // CHECK-MESSAGES: :[[@LINE-1]]:25: warning: do not manage memory manually; consider a container or a smart pointer [cppcoreguidelines-no-malloc]
27
28 // reallocation memory, std::vector shall be used
29 char *realloced = (char *)realloc(array0, 50 * sizeof(int));
30 // CHECK-MESSAGES: :[[@LINE-1]]:29: warning: do not manage memory manually; consider std::vector or std::string [cppcoreguidelines-no-malloc]
31
32 char *align_realloced = (char *)align_realloc(aligned, 50 * sizeof(int), 16);
33 // CHECK-MESSAGES: :[[@LINE-1]]:35: warning: do not manage memory manually; consider std::vector or std::string [cppcoreguidelines-no-malloc]
34
35 // freeing memory the bad way
36 free(realloced);
37 // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: do not manage memory manually; use RAII [cppcoreguidelines-no-malloc]
38
39 align_free(align_realloced);
40 // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: do not manage memory manually; use RAII [cppcoreguidelines-no-malloc]
41
42 // check if a call to malloc as function argument is found as well
43 free(malloc(20));
44 // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: do not manage memory manually; use RAII [cppcoreguidelines-no-malloc]
45 // CHECK-MESSAGES: :[[@LINE-2]]:8: warning: do not manage memory manually; consider a container or a smart pointer [cppcoreguidelines-no-malloc]
46 }
47
48 /// newing an array is still not good, but not relevant to this checker
newed_array()49 void newed_array() {
50 int *new_array = new int[10]; // OK(1)
51 }
52
arbitrary_call()53 void arbitrary_call() {
54 // we dont want every function to raise the warning even if malloc is in the name
55 malloced_array(); // OK(2)
56
57 // completely unrelated function call to malloc
58 newed_array(); // OK(3)
59 }
60