unique_ptrify ExplodedGraph::trim

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@217208 91177308-0d34-0410-b5e6-96231b3b80d8

include/clang/StaticAnalyzer/Core/PathSensitive/ExplodedGraph.h

@@ -297,8 +297,8 @@ public:
                         bool IsSink = false,
                         bool* IsNew = nullptr);
 
-  ExplodedGraph* MakeEmptyGraph() const {
-    return new ExplodedGraph();
+  std::unique_ptr<ExplodedGraph> MakeEmptyGraph() const {
+    return llvm::make_unique<ExplodedGraph>();
   }
 
   /// addRoot - Add an untyped node to the set of roots.
@@ -372,9 +372,10 @@ public:
   /// \param[out] InverseMap An optional map from nodes in the returned graph to
   ///                        nodes in this graph.
   /// \returns The trimmed graph
-  ExplodedGraph *trim(ArrayRef<const NodeTy *> Nodes,
-                      InterExplodedGraphMap *ForwardMap = nullptr,
-                      InterExplodedGraphMap *InverseMap = nullptr) const;
+  std::unique_ptr<ExplodedGraph>
+  trim(ArrayRef<const NodeTy *> Nodes,
+       InterExplodedGraphMap *ForwardMap = nullptr,
+       InterExplodedGraphMap *InverseMap = nullptr) const;
 
   /// Enable tracking of recently allocated nodes for potential reclamation
   /// when calling reclaimRecentlyAllocatedNodes().

lib/StaticAnalyzer/Core/BugReporter.cpp

@@ -2856,7 +2856,7 @@ TrimmedGraph::TrimmedGraph(const ExplodedGraph *OriginalGraph,
   // The trimmed graph is created in the body of the constructor to ensure
   // that the DenseMaps have been initialized already.
   InterExplodedGraphMap ForwardMap;
-  G.reset(OriginalGraph->trim(Nodes, &ForwardMap, &InverseMap));
+  G = OriginalGraph->trim(Nodes, &ForwardMap, &InverseMap);
 
   // Find the (first) error node in the trimmed graph.  We just need to consult
   // the node map which maps from nodes in the original graph to nodes

lib/StaticAnalyzer/Core/ExplodedGraph.cpp

@@ -336,10 +336,10 @@ ExplodedNode *ExplodedGraph::getNode(const ProgramPoint &L,
   return V;
 }
 
-ExplodedGraph *
+std::unique_ptr<ExplodedGraph>
 ExplodedGraph::trim(ArrayRef<const NodeTy *> Sinks,
                     InterExplodedGraphMap *ForwardMap,
-                    InterExplodedGraphMap *InverseMap) const{
+                    InterExplodedGraphMap *InverseMap) const {
 
   if (Nodes.empty())
     return nullptr;
@@ -388,7 +388,7 @@ ExplodedGraph::trim(ArrayRef<const NodeTy *> Sinks,
     return nullptr;
 
   // Create an empty graph.
-  ExplodedGraph* G = MakeEmptyGraph();
+  std::unique_ptr<ExplodedGraph> G = MakeEmptyGraph();
 
   // ===- Pass 2 (forward DFS to construct the new graph) -===
   while (!WL2.empty()) {