Implement support for lambda capture pack expansions, e.g.,
[&values...] { print(values...); }
llvm-svn: 150497
diff --git a/clang/test/CXX/expr/expr.prim/expr.prim.lambda/p23.cpp b/clang/test/CXX/expr/expr.prim/expr.prim.lambda/p23.cpp
new file mode 100644
index 0000000..174db25
--- /dev/null
+++ b/clang/test/CXX/expr/expr.prim/expr.prim.lambda/p23.cpp
@@ -0,0 +1,58 @@
+// RUN: %clang_cc1 -fsyntax-only -std=c++11 %s -verify
+
+void print();
+
+template<typename T, typename... Ts>
+void print(T first, Ts... rest) {
+ (void)first;
+ print(rest...);
+}
+
+template<typename... Ts>
+void unsupported(Ts ...values) {
+ auto unsup = [values] {}; // expected-error{{unexpanded function parameter pack capture is unsupported}}
+}
+
+template<typename... Ts>
+void implicit_capture(Ts ...values) {
+ auto implicit = [&] { print(values...); };
+ implicit();
+}
+
+template<typename... Ts>
+void do_print(Ts... values) {
+ auto bycopy = [values...]() { print(values...); };
+ bycopy();
+ auto byref = [&values...]() { print(values...); };
+ byref();
+
+ auto bycopy2 = [=]() { print(values...); };
+ bycopy2();
+ auto byref2 = [&]() { print(values...); };
+ byref2();
+}
+
+template void do_print(int, float, double);
+
+template<typename T, int... Values>
+void bogus_expansions(T x) {
+ auto l1 = [x...] {}; // expected-error{{pack expansion does not contain any unexpanded parameter packs}}
+ auto l2 = [Values...] {}; // expected-error{{'Values' in capture list does not name a variable}}
+}
+
+void g(int*, float*, double*);
+
+template<class... Args>
+void std_example(Args... args) {
+ auto lm = [&, args...] { return g(args...); };
+};
+
+template void std_example(int*, float*, double*);
+
+template<typename ...Args>
+void variadic_lambda(Args... args) {
+ auto lambda = [](Args... inner_args) { return g(inner_args...); };
+ lambda(args...);
+}
+
+template void variadic_lambda(int*, float*, double*);