[analyzer] Test case: p->x is the same as p[0].x. (PR7297)

llvm-svn: 156720

1 files changed, 13 insertions, 0 deletions

diff --git a/clang/test/Analysis/array-struct-region.c b/clang/test/Analysis/array-struct-region.c
index 4b085c8d700..8be86883a00 100644
--- a/clang/test/Analysis/array-struct-region.c
+++ b/clang/test/Analysis/array-struct-region.c
@@ -45,3 +45,16 @@ void nested_compound_literals_float(float rad) {
       vec[a][1] *= rad; // no-warning
   }
 }
+
+
+void struct_as_array() {
+  struct simple { int x; };
+  struct simple a;
+  struct simple *p = &a;
+  p->x = 5;
+  if (!p[0].x)
+    return; // expected-warning{{never executed}}
+  if (p[0].x)
+    return; // no-warning
+}
+