[clang-tidy] Function names configurable for cppcoreguidelines-nomalloc - checker

Summary:
Hello everybody,

this is an incremental patch for the NoMalloc-Checker I wrote. It allows to configure the memory-management functions, that are checked,
This might be helpful for a code base with custom functions in use, or non-standard functionality, like posix_memalign.

Reviewers: aaron.ballman, hokein, alexfh

Reviewed By: aaron.ballman, alexfh

Subscribers: sbenza, nemanjai, JDevlieghere

Tags: #clang-tools-extra

Patch by Jonas Toth!

Differential Revision: https://reviews.llvm.org/D28239

llvm-svn: 296734

1 files changed, 17 insertions, 0 deletions

diff --git a/clang-tools-extra/test/clang-tidy/cppcoreguidelines-no-malloc-no-functions.cpp b/clang-tools-extra/test/clang-tidy/cppcoreguidelines-no-malloc-no-functions.cpp
new file mode 100644
index 00000000000..8b4d46480c5
--- /dev/null
+++ b/clang-tools-extra/test/clang-tidy/cppcoreguidelines-no-malloc-no-functions.cpp
@@ -0,0 +1,17 @@
+// RUN: %check_clang_tidy %s cppcoreguidelines-no-malloc %t \
+// RUN: -config='{CheckOptions: \
+// RUN:  [{key: cppcoreguidelines-no-malloc.Allocations, value: "::malloc"},\
+// RUN:   {key: cppcoreguidelines-no-malloc.Reallocations, value: ""},\
+// RUN:   {key: cppcoreguidelines-no-malloc.Deallocations, value: ""}]}' \
+// RUN: --
+
+// Just ensure, the check will not crash, when no functions shall be checked.
+
+using size_t = __SIZE_TYPE__;
+
+void *malloc(size_t size);
+
+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]
+}