vendor/clang/clang-trunk-r154661

1 files changed, 50 insertions, 0 deletions

diff --git a/test/CXX/expr/expr.prim/expr.prim.lambda/default-arguments.cpp b/test/CXX/expr/expr.prim/expr.prim.lambda/default-arguments.cpp
new file mode 100644
index 000000000000..5dac886d4d1d
--- /dev/null
+++ b/test/CXX/expr/expr.prim/expr.prim.lambda/default-arguments.cpp
@@ -0,0 +1,50 @@
+// RUN: %clang_cc1 -fsyntax-only -std=c++11 %s -Wno-lambda-extensions -verify
+
+void defargs() {
+  auto l1 = [](int i, int j = 17, int k = 18) { return i + j + k; };
+  int i1 = l1(1);
+  int i2 = l1(1, 2);
+  int i3 = l1(1, 2, 3);
+}
+
+
+void defargs_errors() {
+  auto l1 = [](int i, 
+               int j = 17, 
+               int k) { }; // expected-error{{missing default argument on parameter 'k'}}
+
+  auto l2 = [](int i, int j = i) {}; // expected-error{{default argument references parameter 'i'}}
+
+  int foo;
+  auto l3 = [](int i = foo) {}; // expected-error{{default argument references local variable 'foo' of enclosing function}}
+}
+
+struct NonPOD {
+  NonPOD();
+  NonPOD(const NonPOD&);
+  ~NonPOD();
+};
+
+struct NoDefaultCtor {
+  NoDefaultCtor(const NoDefaultCtor&); // expected-note{{candidate constructor}}
+  ~NoDefaultCtor();
+};
+
+template<typename T>
+void defargs_in_template_unused(T t) {
+  auto l1 = [](const T& value = T()) { };
+  l1(t);
+}
+
+template void defargs_in_template_unused(NonPOD);
+template void defargs_in_template_unused(NoDefaultCtor);
+
+template<typename T>
+void defargs_in_template_used() {
+  auto l1 = [](const T& value = T()) { }; // expected-error{{no matching constructor for initialization of 'NoDefaultCtor'}}
+  l1(); // expected-note{{in instantiation of default function argument expression for 'operator()<NoDefaultCtor>' required here}}
+}
+
+template void defargs_in_template_used<NonPOD>();
+template void defargs_in_template_used<NoDefaultCtor>(); // expected-note{{in instantiation of function template specialization}}
+