add test case for PR3135 which was already fixed

llvm-svn: 86273

Author: nunoplopes

clang/test/Analysis/PR3135.c

@@ -0,0 +1,20 @@
+// RUN: clang-cc -analyze -checker-cfref -analyzer-store=region -verify %s
+// PR3135
+
+typedef struct {
+  int *a;
+} structure;
+
+int bar(structure *x);
+
+int foo()
+{
+  int x;
+  structure y = {&x};
+
+  // the call to bar may initialize x
+  if (bar(&y) && x) // no-warning
+    return 1;
+
+  return 0;
+}