Sema for Captured Statements

Add CapturedDecl to be the DeclContext for CapturedStmt, and perform semantic
analysis. Currently captures all variables by reference.

TODO: templates

Author: Ben Langmuir <ben.langmuir@intel.com>

Differential Revision: http://llvm-reviews.chandlerc.com/D433

llvm-svn: 179618

1 files changed, 52 insertions, 0 deletions

diff --git a/clang/test/SemaCXX/captured-statements.cpp b/clang/test/SemaCXX/captured-statements.cpp
new file mode 100644
index 00000000000..15879a1ebc0
--- /dev/null
+++ b/clang/test/SemaCXX/captured-statements.cpp
@@ -0,0 +1,52 @@
+// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s -fblocks
+
+void test_nest_lambda() {
+  int x;
+  int y;
+  [&,y]() {
+    int z;
+    #pragma clang __debug captured
+    {
+      x = y; // OK
+      y = z; // expected-error{{cannot assign to a variable captured by copy in a non-mutable lambda}}
+      z = y; // OK
+    }
+  }();
+
+  int a;
+  #pragma clang __debug captured
+  {
+    int b;
+    int c;
+    [&,c]() {
+      a = b; // OK
+      b = c; // OK
+      c = a; // expected-error{{cannot assign to a variable captured by copy in a non-mutable lambda}}
+    }();
+  }
+}
+
+class test_obj_capture {
+  int a;
+  void b();
+  static void test() {
+    test_obj_capture c;
+    #pragma clang __debug captured
+    { (void)c.a; }  // OK
+    #pragma clang __debug captured
+    { c.b(); }      // OK
+  }
+};
+
+class test_this_capture {
+  int a;
+  void b();
+  void test() {
+    #pragma clang __debug captured
+    { (void)this; } // OK
+    #pragma clang __debug captured
+    { (void)a; }    // OK
+    #pragma clang __debug captured
+    { b(); }        // OK
+  }
+};