1 files changed, 42 insertions, 0 deletions
diff --git a/clang-tools-extra/test/clang-tidy/cppcoreguidelines-no-malloc.cpp b/clang-tools-extra/test/clang-tidy/cppcoreguidelines-no-malloc.cpp
new file mode 100644
index 00000000000..8f840242a46
--- /dev/null
+++ b/clang-tools-extra/test/clang-tidy/cppcoreguidelines-no-malloc.cpp
@@ -0,0 +1,42 @@
+// RUN: %check_clang_tidy %s cppcoreguidelines-no-malloc %t
+
+using size_t = unsigned long;
+
+void *malloc(size_t size);
+void *calloc(size_t num, size_t size);
+void *realloc(void *ptr, size_t size);
+void free(void *ptr);
+
+void malloced_array() {
+  int *array0 = (int *)malloc(sizeof(int) * 20);
+  // CHECK-MESSAGES: :[[@LINE-1]]:24: warning: do not manage memory manually; consider a container or a smart pointer [cppcoreguidelines-no-malloc]
+
+  int *zeroed = (int *)calloc(20, sizeof(int));
+  // CHECK-MESSAGES: :[[@LINE-1]]:24: warning: do not manage memory manually; consider a container or a smart pointer [cppcoreguidelines-no-malloc]
+
+  // reallocation memory, std::vector shall be used
+  char *realloced = (char *)realloc(array0, 50 * sizeof(int));
+  // CHECK-MESSAGES: :[[@LINE-1]]:29: warning: do not manage memory manually; consider std::vector or std::string [cppcoreguidelines-no-malloc]
+
+  // freeing memory the bad way
+  free(realloced);
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: do not manage memory manually; use RAII [cppcoreguidelines-no-malloc]
+
+  // check if a call to malloc as function argument is found as well
+  free(malloc(20));
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: do not manage memory manually; use RAII [cppcoreguidelines-no-malloc]
+  // CHECK-MESSAGES: :[[@LINE-2]]:8: warning: do not manage memory manually; consider a container or a smart pointer [cppcoreguidelines-no-malloc]
+}
+
+/// newing an array is still not good, but not relevant to this checker
+void newed_array() {
+  int *new_array = new int[10]; // OK(1)
+}
+
+void arbitrary_call() {
+  // we dont want every function to raise the warning even if malloc is in the name
+  malloced_array(); // OK(2)
+
+  // completly unrelated function call to malloc
+  newed_array(); // OK(3)
+}