Add test for incomplete struct pointer.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59236 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Analysis/array-struct.c b/test/Analysis/array-struct.c
index ec4e154..ae33a13 100644
--- a/test/Analysis/array-struct.c
+++ b/test/Analysis/array-struct.c
@@ -50,3 +50,12 @@
   p = __builtin_alloca(10); 
   p[1] = 'a';
 }
+
+struct s2;
+
+void g2(struct s2 *p);
+
+void f7() {
+  struct s2 *p = __builtin_alloca(10);
+  g2(p);
+}