From: Richard Smith <richard-llvm@metafoo.co.uk>
Date: Thu, 10 Mar 2016 19:22:21 +0000 (+0000)
Subject: Add test for r263138.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=1d90e7928e4ac19f9f3615eb69487639b51d9e26;p=clang

Add test for r263138.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@263155 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/test/SemaCXX/switch-implicit-fallthrough-off-by-default.cpp b/test/SemaCXX/switch-implicit-fallthrough-off-by-default.cpp
new file mode 100644
index 0000000000..6ab6370069
--- /dev/null
+++ b/test/SemaCXX/switch-implicit-fallthrough-off-by-default.cpp
@@ -0,0 +1,13 @@
+// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 -DUNREACHABLE=1 %s
+// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 -DUNREACHABLE=0 -Wimplicit-fallthrough %s
+
+void fallthrough(int n) {
+  switch (n) {
+  case 1:
+    if (UNREACHABLE)
+      return;
+    [[fallthrough]]; // expected-no-diagnostics, only checked when UNREACHABLE=0
+  case 2:
+    break;
+  }
+}