Merge branch 'master' of ssh://bitbucket.org/czan/honours

1 files changed, 88 insertions, 0 deletions

diff --git a/clang/test/CXX/expr/expr.prim/expr.prim.lambda/blocks.mm b/clang/test/CXX/expr/expr.prim/expr.prim.lambda/blocks.mm
new file mode 100644
index 0000000..0c3fdb2
--- /dev/null
+++ b/clang/test/CXX/expr/expr.prim/expr.prim.lambda/blocks.mm
@@ -0,0 +1,88 @@
+// RUN: %clang_cc1 -std=c++11 -fblocks %s -verify
+
+void block_capture_errors() {
+  __block int var; // expected-note 2{{'var' declared here}}
+  (void)[var] { }; // expected-error{{__block variable 'var' cannot be captured in a lambda}}
+
+  (void)[=] { var = 17; }; // expected-error{{__block variable 'var' cannot be captured in a lambda}}
+}
+
+void conversion_to_block(int captured) {
+  int (^b1)(int) = [=](int x) { return x + captured; };
+
+  const auto lambda = [=](int x) { return x + captured; };
+  int (^b2)(int) = lambda;
+}
+
+template<typename T>
+class ConstCopyConstructorBoom {
+public:
+  ConstCopyConstructorBoom(ConstCopyConstructorBoom&);
+
+  ConstCopyConstructorBoom(const ConstCopyConstructorBoom&) {
+    T *ptr = 1; // expected-error{{cannot initialize a variable of type 'float *' with an rvalue of type 'int'}}
+  }
+
+  void foo() const;
+};
+
+void conversion_to_block_init(ConstCopyConstructorBoom<int> boom,
+                              ConstCopyConstructorBoom<float> boom2) {
+  const auto& lambda1([=] { boom.foo(); }); // okay
+
+  const auto& lambda2([=] { boom2.foo(); }); // expected-note{{in instantiation of member function}}
+  void (^block)(void) = lambda2;
+}
+
+
+void nesting() {
+  int array[7]; // expected-note 2{{'array' declared here}}
+  [=] () mutable {
+    [&] {
+      ^ {
+        int i = array[2];
+        i += array[3];
+      }();
+    }();
+  }();
+
+  [&] {
+    [=] () mutable {
+      ^ {
+        int i = array[2]; // expected-error{{cannot refer to declaration with an array type inside block}}
+        i += array[3]; // expected-error{{cannot refer to declaration with an array type inside block}}
+      }();
+    }();
+  }();
+}
+
+namespace overloading {
+  void bool_conversion() {
+    if ([](){}) {
+    }
+
+    bool b = []{};
+    b = (bool)[]{};
+  }
+
+  void conversions() {
+    int (*fp)(int) = [](int x) { return x + 1; };
+    fp = [](int x) { return x + 1; };
+
+    typedef int (*func_ptr)(int);
+    fp = (func_ptr)[](int x) { return x + 1; };
+
+    int (^bp)(int) = [](int x) { return x + 1; };
+    bp = [](int x) { return x + 1; };
+
+    typedef int (^block_ptr)(int);
+    bp = (block_ptr)[](int x) { return x + 1; };
+  }
+
+  int &accept_lambda_conv(int (*fp)(int));
+  float &accept_lambda_conv(int (^bp)(int));
+
+  void call_with_lambda() {
+    int &ir = accept_lambda_conv([](int x) { return x + 1; });
+  }
+}