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-rw-r--r--clang/test/CXX/expr/expr.prim/expr.prim.lambda/default-arguments.cpp50
1 files changed, 50 insertions, 0 deletions
diff --git a/clang/test/CXX/expr/expr.prim/expr.prim.lambda/default-arguments.cpp b/clang/test/CXX/expr/expr.prim/expr.prim.lambda/default-arguments.cpp
new file mode 100644
index 0000000..5dac886
--- /dev/null
+++ b/clang/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}}
+