[analyzer] For now assume all standard global 'operator new' functions allocate memory in heap.
+ Improved test coverage for cplusplus.NewDelete checker.

llvm-svn: 178244
diff --git a/clang/test/Analysis/NewDelete-variadic.cpp b/clang/test/Analysis/NewDelete-variadic.cpp
new file mode 100644
index 0000000..4b02403
--- /dev/null
+++ b/clang/test/Analysis/NewDelete-variadic.cpp
@@ -0,0 +1,19 @@
+// RUN: %clang_cc1 -analyze -analyzer-checker=core,cplusplus.NewDelete -analyzer-store region -std=c++11 -fblocks -verify %s
+// expected-no-diagnostics
+
+namespace std {
+  typedef __typeof__(sizeof(int)) size_t;
+}
+
+void *operator new(std::size_t, ...);
+void *operator new[](std::size_t, ...);
+
+void testGlobalCustomVariadicNew() {
+  void *p1 = operator new(0); // no warn
+
+  void *p2 = operator new[](0); // no warn
+
+  int *p3 = new int; // no warn
+
+  int *p4 = new int[0]; // no warn
+}