Tests for C++ [expr.prim.lambda]p5. We already implement all of these

semantics. 

llvm-svn: 150190

1 files changed, 57 insertions, 3 deletions

diff --git a/clang/test/CXX/expr/expr.prim/expr.prim.lambda/p5.cpp b/clang/test/CXX/expr/expr.prim/expr.prim.lambda/p5.cpp
index ff6e7b4438d..9df0f64ad31 100644
--- a/clang/test/CXX/expr/expr.prim/expr.prim.lambda/p5.cpp
+++ b/clang/test/CXX/expr/expr.prim/expr.prim.lambda/p5.cpp
@@ -1,6 +1,60 @@
-// RUN: %clang_cc1 -std=c++11 %s -verify
+// RUN: %clang_cc1 -std=c++11 %s -Winvalid-noreturn -verify
 
+// An attribute-specifier-seq in a lambda-declarator appertains to the
+// type of the corresponding function call operator.
+void test_attributes() {
+  auto nrl = []() [[noreturn]] {}; // expected-warning{{function declared 'noreturn' should not return}}
+}
+
+template<typename T>
+struct bogus_override_if_virtual : public T {
+  int operator()() const;
+};
+
+void test_quals() {
+  // This function call operator is declared const (9.3.1) if and only
+  // if the lambda- expression's parameter-declaration-clause is not
+  // followed by mutable.
+  auto l = [](){}; // expected-note{{method is not marked volatile}}
+  const decltype(l) lc = l;
+  l();
+  lc();
+
+  auto ml = []() mutable{}; // expected-note{{method is not marked const}} \
+                            // expected-note{{method is not marked volatile}} 
+  const decltype(ml) mlc = ml;
+  ml();
+  mlc(); // expected-error{{no matching function for call to object of type}}
+
+  // It is neither virtual nor declared volatile.
+  volatile decltype(l) lv = l;
+  volatile decltype(ml) mlv = ml;
+  lv(); // expected-error{{no matching function for call to object of type}}
+  mlv(); // expected-error{{no matching function for call to object of type}}
+
+  bogus_override_if_virtual<decltype(l)> bogus;
+}
+
+// Default arguments (8.3.6) shall not be specified in the
+// parameter-declaration-clause of a lambda- declarator.
 int test_default_args() {
-  (void)[](int i = 5,  // expected-error{{default arguments can only be specified for parameters in a function declaration}}
-     int j = 17) {}; // expected-error{{default arguments can only be specified for parameters in a function declaration}}
+  return [](int i = 5,  // expected-error{{default arguments can only be specified for parameters in a function declaration}}
+            int j = 17) { return i+j;}(5, 6); // expected-error{{default arguments can only be specified for parameters in a function declaration}}
+}
+
+// Any exception-specification specified on a lambda-expression
+// applies to the corresponding function call operator.
+void test_exception_spec() {
+  auto tl1 = []() throw(int) {};
+  auto tl2 = []() {};
+  static_assert(!noexcept(tl1()), "lambda can throw");
+  static_assert(!noexcept(tl2()), "lambda can throw");
+
+  auto ntl1 = []() throw() {};
+  auto ntl2 = []() noexcept(true) {};
+  auto ntl3 = []() noexcept {};
+  static_assert(noexcept(ntl1()), "lambda cannot throw");  
+  static_assert(noexcept(ntl2()), "lambda cannot throw");  
+  static_assert(noexcept(ntl3()), "lambda cannot throw");  
 }
+