From 952eddef9aff85b1e92626e89baaf7a360e2ac85 Mon Sep 17 00:00:00 2001
From: dim <dim@FreeBSD.org>
Date: Sun, 22 Dec 2013 00:07:40 +0000
Subject: Vendor import of clang release_34 branch r197841 (effectively, 3.4
 RC3): https://llvm.org/svn/llvm-project/cfe/branches/release_34@197841

---
 .../expr.prim.lambda/p5-generic-lambda-1y.cpp      | 131 +++++++++++++++++++++
 1 file changed, 131 insertions(+)
 create mode 100644 test/CXX/expr/expr.prim/expr.prim.lambda/p5-generic-lambda-1y.cpp

(limited to 'test/CXX/expr/expr.prim/expr.prim.lambda/p5-generic-lambda-1y.cpp')

diff --git a/test/CXX/expr/expr.prim/expr.prim.lambda/p5-generic-lambda-1y.cpp b/test/CXX/expr/expr.prim/expr.prim.lambda/p5-generic-lambda-1y.cpp
new file mode 100644
index 0000000..c5d3bf6
--- /dev/null
+++ b/test/CXX/expr/expr.prim/expr.prim.lambda/p5-generic-lambda-1y.cpp
@@ -0,0 +1,131 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s -std=c++1y -DCXX1Y 
+
+namespace test_factorial {
+
+auto Fact = [](auto Self, unsigned n) -> unsigned {
+    return !n ? 1 : Self(Self, n - 1) * n;
+};
+
+auto six = Fact(Fact, 3);
+
+}
+
+namespace overload_generic_lambda {
+  template <class F1, class F2> struct overload : F1, F2 {
+    using F1::operator();
+    using F2::operator();
+    overload(F1 f1, F2 f2) : F1(f1), F2(f2) { }
+  };
+
+  auto NumParams = [](auto Self, auto h, auto ... rest) -> unsigned {
+    return 1 + Self(Self, rest...);
+  };
+  auto Base = [](auto Self, auto h) -> unsigned {
+      return 1;
+  };
+  overload<decltype(Base), decltype(NumParams)> O(Base, NumParams);
+  int num_params =  O(O, 5, 3, "abc", 3.14, 'a');
+}
+
+
+namespace overload_generic_lambda_return_type_deduction {
+  template <class F1, class F2> struct overload : F1, F2 {
+    using F1::operator();
+    using F2::operator();
+    overload(F1 f1, F2 f2) : F1(f1), F2(f2) { }
+  };
+
+  auto NumParams = [](auto Self, auto h, auto ... rest) {
+    return 1 + Self(Self, rest...);
+  };
+  auto Base = [](auto Self, auto h) {
+      return 1;
+  };
+  overload<decltype(Base), decltype(NumParams)> O(Base, NumParams);
+  int num_params =  O(O, 5, 3, "abc", 3.14, 'a');
+}
+
+namespace test_standard_p5 {
+// FIXME: This test should eventually compile without an explicit trailing return type
+auto glambda = [](auto a, auto&& b) ->bool { return a < b; };
+bool b = glambda(3, 3.14); // OK
+
+}
+namespace test_deduction_failure {
+ int test() {
+   auto g = [](auto *a) { //expected-note{{candidate template ignored}}
+    return a;
+   };
+   struct X { };
+   X *x;
+   g(x);
+   g(3); //expected-error{{no matching function}}
+   return 0;
+ }
+
+}
+  
+namespace test_instantiation_or_sfinae_failure {
+int test2() {
+  {
+    auto L = [](auto *a) { 
+                return (*a)(a); }; //expected-error{{called object type 'double' is not a function}}
+    double d;
+    L(&d); //expected-note{{in instantiation of}}
+    auto M = [](auto b) { return b; };
+    L(&M); // ok
+  }
+  {
+    auto L = [](auto *a) ->decltype (a->foo()) { //expected-note2{{candidate template ignored:}}
+                return (*a)(a); }; 
+    double d;
+    L(&d); //expected-error{{no matching function for call}} 
+    auto M = [](auto b) { return b; };
+    L(&M); //expected-error{{no matching function for call}} 
+ 
+  }
+  return 0;
+}
+
+
+}
+  
+namespace test_misc {
+auto GL = [](auto a, decltype(a) b) //expected-note{{candidate function}} 
+                -> int { return a + b; };
+
+void test() {
+   struct X { };
+   GL(3, X{}); //expected-error{{no matching function}}
+}
+
+void test2() {
+  auto l = [](auto *a) -> int { 
+              (*a)(a); return 0; }; //expected-error{{called object type 'double' is not a function}}
+  l(&l);
+  double d;
+  l(&d); //expected-note{{in instantiation of}}
+}
+
+}
+
+namespace nested_lambdas {
+  int test() {
+    auto L = [](auto a) {
+                 return [=](auto b) {  
+                           return a + b;
+                        };
+              };
+  }
+  auto get_lambda() {
+    return [](auto a) {
+      return a; 
+    };
+  };
+  
+  int test2() {
+    auto L = get_lambda();
+    L(3);
+  }
+}
+
-- 
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