Add random array and struct test code for SCA.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58085 91177308-0d34-0410-b5e6-96231b3b80d8

test/Analysis/array-struct.c

 // RUN: clang -checker-simple -verify %s
 
-struct s {};
+struct s {
+  int data;
+  int data_array[10];
+};
 
 void f(void) {
   int a[10];
@@ -11,4 +14,6 @@ void f(void) {
   struct s d;
   struct s *q;
   q = &d;
+  q->data = 3;
+  d.data_array[9] = 17;
 }