vendor/clang/clang-trunk-r321017

1 files changed, 25 insertions, 0 deletions

diff --git a/test/Analysis/null-deref-path-notes.cpp b/test/Analysis/null-deref-path-notes.cpp
new file mode 100644
index 0000000000000..617f5def150a8
--- /dev/null
+++ b/test/Analysis/null-deref-path-notes.cpp
@@ -0,0 +1,25 @@
+// RUN: %clang_analyze_cc1 -w -x c++ -analyzer-checker=core -analyzer-output=text -analyzer-eagerly-assume -verify %s
+
+namespace pr34731 {
+int b;
+class c {
+  class B {
+   public:
+    double ***d;
+    B();
+  };
+  void e(double **, int);
+  void f(B &, int &);
+};
+
+// Properly track the null pointer in the array field back to the default
+// constructor of 'h'.
+void c::f(B &g, int &i) {
+  e(g.d[9], i); // expected-warning{{Array access (via field 'd') results in a null pointer dereference}}
+                // expected-note@-1{{Array access (via field 'd') results in a null pointer dereference}}
+  B h, a; // expected-note{{Value assigned to 'h.d'}}
+  a.d == __null; // expected-note{{Assuming the condition is true}}
+  a.d != h.d; // expected-note{{Assuming pointer value is null}}
+  f(h, b); // expected-note{{Calling 'c::f'}}
+}
+}