r211676 - Added a test to ensure -Wimplicit-fallthrough works with -fblocks correctly.

[Alexander Kornienko]

Author: alexfh
Date: Wed Jun 25 03:09:35 2014
New Revision: 211676

URL: http://llvm.org/viewvc/llvm-project?rev=211676&view=rev
Log:
Added a test to ensure -Wimplicit-fallthrough works with -fblocks correctly.

Added:
    cfe/trunk/test/SemaCXX/switch-implicit-fallthrough-blocks.cpp

Added: cfe/trunk/test/SemaCXX/switch-implicit-fallthrough-blocks.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaCXX/switch-implicit-fallthrough-blocks.cpp?rev=211676&view=auto
==============================================================================
--- cfe/trunk/test/SemaCXX/switch-implicit-fallthrough-blocks.cpp (added)
+++ cfe/trunk/test/SemaCXX/switch-implicit-fallthrough-blocks.cpp Wed Jun 25 03:09:35 2014
@@ -0,0 +1,19 @@
+// RUN: %clang_cc1 -fsyntax-only -verify -fblocks -std=c++11 -Wimplicit-fallthrough %s
+
+void fallthrough_in_blocks() {
+  void (^block)() = ^{
+    int x = 0;
+    switch (x) {
+    case 0:
+      x++;
+      [[clang::fallthrough]]; // no diagnostics
+    case 1:
+      x++;
+    default: // \
+        expected-warning{{unannotated fall-through between switch labels}} \
+        expected-note{{insert 'break;' to avoid fall-through}}
+      break;
+    }
+  };
+  block();
+}