1 files changed, 54 insertions, 0 deletions
diff --git a/clang-tools-extra/test/clang-tidy/bugprone-undelegated-constructor.cpp b/clang-tools-extra/test/clang-tidy/bugprone-undelegated-constructor.cpp
new file mode 100644
index 00000000000..09b20ac74e2
--- /dev/null
+++ b/clang-tools-extra/test/clang-tidy/bugprone-undelegated-constructor.cpp
@@ -0,0 +1,54 @@
+// RUN: %check_clang_tidy %s bugprone-undelegated-constructor %t
+
+struct Ctor;
+Ctor foo();
+
+struct Ctor {
+  Ctor();
+  Ctor(int);
+  Ctor(int, int);
+  Ctor(Ctor *i) {
+    Ctor();
+// CHECK-MESSAGES: :[[@LINE-1]]:5: warning: did you intend to call a delegated constructor? A temporary object is created here instead [bugprone-undelegated-constructor]
+    Ctor(0);
+// CHECK-MESSAGES: :[[@LINE-1]]:5: warning: did you intend to call a delegated constructor?
+    Ctor(1, 2);
+// CHECK-MESSAGES: :[[@LINE-1]]:5: warning: did you intend to call a delegated constructor?
+    foo();
+  }
+};
+
+Ctor::Ctor() {
+  Ctor(1);
+// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: did you intend to call a delegated constructor?
+}
+
+Ctor::Ctor(int i) : Ctor(i, 1) {} // properly delegated.
+
+struct Dtor {
+  Dtor();
+  Dtor(int);
+  Dtor(int, int);
+  Dtor(Ctor *i) {
+    Dtor();
+// CHECK-MESSAGES: :[[@LINE-1]]:5: warning: did you intend to call a delegated constructor?
+    Dtor(0);
+// CHECK-MESSAGES: :[[@LINE-1]]:5: warning: did you intend to call a delegated constructor?
+    Dtor(1, 2);
+// CHECK-MESSAGES: :[[@LINE-1]]:5: warning: did you intend to call a delegated constructor?
+  }
+  ~Dtor();
+};
+
+struct Base {};
+struct Derived : public Base {
+  Derived() { Base(); }
+// CHECK-MESSAGES: :[[@LINE-1]]:15: warning: did you intend to call a delegated constructor?
+};
+
+template <typename T>
+struct TDerived : public Base {
+  TDerived() { Base(); }
+};
+
+TDerived<int> t;