-Wunused-parameter: Don't fire on defaulted or deleted functions

Patch by Dinesh Dwivedi!

Differential Revision: http://reviews.llvm.org/D3376

llvm-svn: 207672

1 files changed, 33 insertions, 0 deletions

diff --git a/clang/test/SemaCXX/cxx11-unused.cpp b/clang/test/SemaCXX/cxx11-unused.cpp
new file mode 100644
index 00000000000..1e25bd51572
--- /dev/null
+++ b/clang/test/SemaCXX/cxx11-unused.cpp
@@ -0,0 +1,33 @@
+// RUN: %clang_cc1 -std=c++11 -verify %s -Wunused-parameter
+
+// PR19303 : Make sure we don't get a unused expression warning for deleted and
+// defaulted functions
+
+// expected-no-diagnostics
+
+class A {
+public:
+  int x;
+  A() = default;
+  ~A() = default;
+  A(const A &other) = delete;
+
+  template <typename T>
+  void SetX(T x) {
+    this->x = x;
+  };
+
+  void SetX1(int x);
+};
+
+template <>
+void A::SetX(A x) = delete;
+
+class B {
+public:
+  B() = default;
+  ~B() = default;
+  B(const B &other);
+};
+
+B::B(const B &other) = default;