Add a warning to catch a bug recently caught by code review, like this:
t2.c:2:12: warning: use of logical && with constant operand; switch to bitwise &
      or remove constant [-Wlogical-bitwise-confusion]
  return x && 4;
           ^  ~

wording improvement suggestions are welcome.

llvm-svn: 108260
diff --git a/clang/test/SemaCXX/bool.cpp b/clang/test/SemaCXX/bool.cpp
index 44e17ce..726fa6c 100644
--- a/clang/test/SemaCXX/bool.cpp
+++ b/clang/test/SemaCXX/bool.cpp
@@ -25,6 +25,6 @@
 
 void test2() {
   int n = 2;
-  static_assert_arg_is_bool(n && 4);
-  static_assert_arg_is_bool(n || 5);
+  static_assert_arg_is_bool(n && 4);  // expected-warning {{use of logical && with constant operand}}
+  static_assert_arg_is_bool(n || 5);  // expected-warning {{use of logical || with constant operand}}
 }