When operator new is used on a class with no constructor it generates an AGGR_INIT_EXPR, not a CALL_EXPR... with testcase. NPODB, static-checking only.

xpcom/tests/static-checker/StackAggrInit.cpp

@@ -0,0 +1,12 @@
+#include "nscore.h"
+#include "nsAutoPtr.h"
+
+class NS_STACK_CLASS A
+{
+  int i;
+};
+
+void Foo()
+{
+  nsAutoPtr<A> a(new A);
+}