From: George Karpenkov <ekarpenkov@apple.com>
Date: Thu, 6 Sep 2018 23:07:26 +0000 (+0000)
Subject: [analyzer] Dump a reproducible, deterministic ID of program state to exploded graph
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=cc7b7584b5a4ef1071f03ce51b2f8cbfcbff329c;p=clang

[analyzer] Dump a reproducible, deterministic ID of program state to exploded graph

Differential Revision: https://reviews.llvm.org/D51395

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@341600 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/clang/StaticAnalyzer/Core/PathSensitive/ProgramState.h b/include/clang/StaticAnalyzer/Core/PathSensitive/ProgramState.h
index b86301a034..6aaa1e53fe 100644
--- a/include/clang/StaticAnalyzer/Core/PathSensitive/ProgramState.h
+++ b/include/clang/StaticAnalyzer/Core/PathSensitive/ProgramState.h
@@ -107,6 +107,8 @@ public:
 
   ~ProgramState();
 
+  int64_t getID() const;
+
   /// Return the ProgramStateManager associated with this state.
   ProgramStateManager &getStateManager() const {
     return *stateMgr;
diff --git a/lib/StaticAnalyzer/Core/ExprEngine.cpp b/lib/StaticAnalyzer/Core/ExprEngine.cpp
index 04190deb7a..a9901a6cd7 100644
--- a/lib/StaticAnalyzer/Core/ExprEngine.cpp
+++ b/lib/StaticAnalyzer/Core/ExprEngine.cpp
@@ -3141,7 +3141,8 @@ struct DOTGraphTraits<ExplodedNode*> : public DefaultDOTGraphTraits {
     }
 
     ProgramStateRef state = N->getState();
-    Out << "\\|StateID: " << (const void*) state.get()
+    Out << "\\|StateID: " << state->getID() << " ("
+        << (const void*) state.get() << ")"
         << " NodeID: " << (const void*) N << "\\|";
 
     state->printDOT(Out, N->getLocationContext());
diff --git a/lib/StaticAnalyzer/Core/ProgramState.cpp b/lib/StaticAnalyzer/Core/ProgramState.cpp
index 94e2e00d8b..361255b4b1 100644
--- a/lib/StaticAnalyzer/Core/ProgramState.cpp
+++ b/lib/StaticAnalyzer/Core/ProgramState.cpp
@@ -69,6 +69,13 @@ ProgramState::~ProgramState() {
     stateMgr->getStoreManager().decrementReferenceCount(store);
 }
 
+int64_t ProgramState::getID() const {
+  Optional<int64_t> Out = getStateManager().Alloc.identifyObject(this);
+  assert(Out && "Wrong allocator used");
+  assert(*Out % alignof(ProgramState) == 0 && "Wrong alignment information");
+  return *Out / alignof(ProgramState);
+}
+
 ProgramStateManager::ProgramStateManager(ASTContext &Ctx,
                                          StoreManagerCreator CreateSMgr,
                                          ConstraintManagerCreator CreateCMgr,