Add another static analyzer test case involving attribute(nonnull).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60547 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Analysis/null-deref-ps.c b/test/Analysis/null-deref-ps.c
index 3d912dc..8060653 100644
--- a/test/Analysis/null-deref-ps.c
+++ b/test/Analysis/null-deref-ps.c
@@ -72,7 +72,12 @@
          : bar2(p, 0);   // no-warning
 }
 
+int bar3(int*p, int q, int *r) __attribute__((nonnull(1,3)));
 
+int f6c(int *p, int *q) {
+   return !p ? bar3(q, 2, p)
+             : bar3(p, 2, q);
+}
 
 int* qux();