Implement C++ [expr.prim.lambda]p2, which bans lambda expressions in

unevaluated operands. Be certain that we're marking everything
referenced within a capture initializer as odr-used.

llvm-svn: 150163

1 files changed, 48 insertions, 0 deletions

diff --git a/clang/test/CXX/expr/expr.prim/expr.prim.lambda/p2.cpp b/clang/test/CXX/expr/expr.prim/expr.prim.lambda/p2.cpp
new file mode 100644
index 00000000000..48c00aa7c68
--- /dev/null
+++ b/clang/test/CXX/expr/expr.prim/expr.prim.lambda/p2.cpp
@@ -0,0 +1,48 @@
+// RUN: %clang_cc1 -fsyntax-only -std=c++11 %s -verify
+
+// prvalue
+void prvalue() {
+  auto&& x = []()->void { }; // expected-error{{lambda expressions are not supported yet}}
+  auto& y = []()->void { }; // expected-error{{cannot bind to a temporary of type}} \
+  // expected-error{{lambda expressions are not supported yet}}
+}
+
+namespace std {
+  class type_info;
+}
+
+struct P {
+  virtual ~P();
+};
+
+void unevaluated_operand(P &p, int i) {
+  int i2 = sizeof([]()->void{}()); // expected-error{{lambda expression in an unevaluated operand}} \
+  // expected-error{{lambda expressions are not supported yet}}
+  const std::type_info &ti1 = typeid([&]() -> P& { return p; }()); // expected-error{{lambda expressions are not supported yet}}
+  const std::type_info &ti2 = typeid([&]() -> int { return i; }());  // expected-error{{lambda expression in an unevaluated operand}} \
+  // expected-error{{lambda expressions are not supported yet}}
+}
+
+template<typename T>
+struct Boom {
+  Boom(const Boom&) { 
+    T* x = 1; // expected-error{{cannot initialize a variable of type 'int *' with an rvalue of type 'int'}} \
+    // expected-error{{cannot initialize a variable of type 'float *' with an rvalue of type 'int'}} \
+    // expected-error{{cannot initialize a variable of type 'double *' with an rvalue of type 'int'}}
+  }
+  void tickle() const;
+};
+
+void odr_used(P &p, Boom<int> boom_int, Boom<float> boom_float,
+              Boom<double> boom_double) {
+  const std::type_info &ti1
+    = typeid([=,&p]() -> P& { boom_int.tickle(); return p; }()); // expected-error{{lambda expressions are not supported yet}} \
+  // expected-note{{in instantiation of member function 'Boom<int>::Boom' requested here}}
+  const std::type_info &ti2
+    = typeid([=]() -> int { boom_float.tickle(); return 0; }()); // expected-error{{lambda expression in an unevaluated operand}} \
+  // expected-error{{lambda expressions are not supported yet}} \
+  // expected-note{{in instantiation of member function 'Boom<float>::Boom' requested here}}
+
+  auto foo = [=]() -> int { boom_double.tickle(); return 0; }; // expected-error{{lambda expressions are not supported yet}} \
+  // expected-note{{in instantiation of member function 'Boom<double>::Boom' requested here}}
+}