[Sema]. Warn when logical expression is a pointer

which evaluates to true. rdar://18716393.
Reviewed by Richard Trieu

llvm-svn: 222009

1 files changed, 5 insertions, 1 deletions

diff --git a/clang/test/Sema/exprs.c b/clang/test/Sema/exprs.c
index 2fb17e4880c..17b1aa2851b 100644
--- a/clang/test/Sema/exprs.c
+++ b/clang/test/Sema/exprs.c
@@ -244,6 +244,10 @@ void test22() {
   if ("help")
     (void) 0;
 
-  if (test22)
+  if (test22) // expected-warning {{address of function 'test22' will always evaluate to 'true'}} \
+	      // expected-note {{prefix with the address-of operator to silence this warning}}
+    (void) 0;
+
+  if (&test22)
     (void) 0;
 }