Fix segfault by initializing partials for fvar<var> etc

stan-dev · bob-carpenter · May 24, 2017 · Mar 27, 2017 · Mar 28, 2017 · Mar 30, 2017
commit 7e343b93497269f5c4ecea1e12f3160ee7b7916f
diff --git a/stan/math/prim/scal/meta/operands_and_partials.hpp b/stan/math/prim/scal/meta/operands_and_partials.hpp
@@ -98,7 +98,7 @@ namespace stan {
         ViewElt partial;
 
       public:
-        ops_partials_edge_singular(const Op& a) : operand(a), partial() { }
+        ops_partials_edge_singular(const Op& a) : operand(a), partial(0) { }
         void increment_dx(int /*n*/, const ViewElt& adj) {
           partial += adj;
         }