1 files changed, 28 insertions, 0 deletions
diff --git a/tools/clang-tidy/test/bugprone-macro-repeated-side-effects.cpp b/tools/clang-tidy/test/bugprone-macro-repeated-side-effects.cpp
new file mode 100644
index 0000000000..2dedb3aca9
--- /dev/null
+++ b/tools/clang-tidy/test/bugprone-macro-repeated-side-effects.cpp
@@ -0,0 +1,28 @@
+// https://clang.llvm.org/extra/clang-tidy/checks/bugprone-macro-repeated-side-effects.html
+
+#define MACRO_WITHOUT_REPEATED_ARG(x) (x)
+#define MACRO_WITH_REPEATED_ARG(x) ((x) + (x))
+
+static int g;
+
+int function_with_side_effects(int i)
+{
+  g += i;
+  return g;
+}
+
+void test()
+{
+  int i;
+  i = MACRO_WITHOUT_REPEATED_ARG(1); // OK
+  i = MACRO_WITH_REPEATED_ARG(1); // OK
+
+  i = MACRO_WITHOUT_REPEATED_ARG(i); // OK
+  i = MACRO_WITH_REPEATED_ARG(i); // OK
+
+  i = MACRO_WITHOUT_REPEATED_ARG(function_with_side_effects(i)); // OK
+  i = MACRO_WITH_REPEATED_ARG(function_with_side_effects(i)); // NO WARNING
+
+  i = MACRO_WITHOUT_REPEATED_ARG(i++); // OK
+  i = MACRO_WITH_REPEATED_ARG(i++); // WARNING
+}