Index: clang/lib/StaticAnalyzer/Checkers/IteratorModeling.cpp
===================================================================
--- clang/lib/StaticAnalyzer/Checkers/IteratorModeling.cpp
+++ clang/lib/StaticAnalyzer/Checkers/IteratorModeling.cpp
@@ -121,6 +121,9 @@
   void handleEraseAfter(CheckerContext &C, const SVal &Iter) const;
   void handleEraseAfter(CheckerContext &C, const SVal &Iter1,
                         const SVal &Iter2) const;
+  void printState(raw_ostream &Out, ProgramStateRef State, const char *NL,
+                  const char *Sep) const override;
+
 public:
   IteratorModeling() {}
 
@@ -1080,6 +1083,58 @@
   C.addTransition(State);
 }
 
+void IteratorModeling::printState(raw_ostream &Out, ProgramStateRef State,
+                                  const char *NL, const char *Sep) const {
+
+  auto ContMap = State->get<ContainerMap>();
+
+  if (!ContMap.isEmpty()) {
+    Out << Sep << "Container Data :" << NL;
+    for (const auto Cont : ContMap) {
+      Cont.first->dumpToStream(Out);
+      Out << " : [ ";
+      const auto CData = Cont.second;
+      if (CData.getBegin())
+        CData.getBegin()->dumpToStream(Out);
+      else
+        Out << "<Unknown>";
+      Out << " .. ";
+      if (CData.getEnd())
+        CData.getEnd()->dumpToStream(Out);
+      else
+        Out << "<Unknown>";
+      Out << " ]" << NL;
+    }
+  }
+
+  auto SymbolMap = State->get<IteratorSymbolMap>();
+  auto RegionMap = State->get<IteratorRegionMap>();
+
+  if (!SymbolMap.isEmpty() || !RegionMap.isEmpty()) {
+    Out << Sep << "Iterator Positions :" << NL;
+    for (const auto Sym : SymbolMap) {
+      Sym.first->dumpToStream(Out);
+      Out << " : ";
+      const auto Pos = Sym.second;
+      Out << (Pos.isValid() ? "Valid" : "Invalid") << " ; Container == ";
+      Pos.getContainer()->dumpToStream(Out);
+      Out<<" ; Offset == ";
+      Pos.getOffset()->dumpToStream(Out);
+    }
+
+    for (const auto Reg : RegionMap) {
+      Reg.first->dumpToStream(Out);
+      Out << " : ";
+      const auto Pos = Reg.second;
+      Out << (Pos.isValid() ? "Valid" : "Invalid") << " ; Container == ";
+      Pos.getContainer()->dumpToStream(Out);
+      Out<<" ; Offset == ";
+      Pos.getOffset()->dumpToStream(Out);
+    }
+  }
+}
+
+
 namespace {
 
 const CXXRecordDecl *getCXXRecordDecl(ProgramStateRef State,
Index: clang/test/Analysis/iterator-modelling.cpp
===================================================================
--- clang/test/Analysis/iterator-modelling.cpp
+++ clang/test/Analysis/iterator-modelling.cpp
@@ -1,6 +1,9 @@
 // RUN: %clang_analyze_cc1 -std=c++11 -analyzer-checker=core,cplusplus,debug.DebugIteratorModeling,debug.ExprInspection -analyzer-config aggressive-binary-operation-simplification=true -analyzer-config c++-container-inlining=false %s -verify
+
 // RUN: %clang_analyze_cc1 -std=c++11 -analyzer-checker=core,cplusplus,debug.DebugIteratorModeling,debug.ExprInspection -analyzer-config aggressive-binary-operation-simplification=true -analyzer-config c++-container-inlining=true -DINLINE=1 %s -verify
 
+// RUN: %clang_analyze_cc1 -std=c++11 -analyzer-checker=core,cplusplus,alpha.cplusplus.IteratorModeling,debug.ExprInspection -analyzer-config aggressive-binary-operation-simplification=true %s 2>&1 | FileCheck %s
+
 #include "Inputs/system-header-simulator-cxx.h"
 
 template <typename Container>
@@ -1970,3 +1973,29 @@
                         clang_analyzer_iterator_position(first)); // expected-warning@-1{{FALSE}} expected-warning@-1 0-1{{TRUE}} FIXME: should only expect FALSE in every case
   }
 }
+
+void clang_analyzer_printState();
+
+void print_state(std::vector<int> &V) {
+  const auto i0 = V.cbegin();
+  clang_analyzer_printState();
+
+// CHECK:      "checker_messages": [
+// CHECK-NEXT:   { "checker": "alpha.cplusplus.IteratorModeling", "messages": [
+// CHECK-NEXT:     "Container Data :",
+// CHECK-NEXT:     "SymRegion{reg_$[[#]]<std::vector<int> & V>} : [ conj_$[[#]]{long, LC[[#]], S[[#]], #[[#]]} .. <Unknown> ]",
+// CHECK-NEXT:     "Iterator Positions :",
+// CHECK-NEXT:     "i0 : Valid ; Container == SymRegion{reg_$[[#]]<std::vector<int> & V>} ; Offset == conj_$[[#]]{long, LC[[#]], S[[#]], #[[#]]}"
+// CHECK-NEXT:   ]}
+
+  const auto i1 = V.cend();
+  clang_analyzer_printState();
+  
+// CHECK:      "checker_messages": [
+// CHECK-NEXT:   { "checker": "alpha.cplusplus.IteratorModeling", "messages": [
+// CHECK-NEXT:     "Container Data :",
+// CHECK-NEXT:     "SymRegion{reg_$[[#]]<std::vector<int> & V>} : [ conj_$[[#]]{long, LC[[#]], S[[#]], #[[#]]} .. conj_$[[#]]{long, LC[[#]], S[[#]], #[[#]]} ]",
+// CHECK-NEXT:     "Iterator Positions :",
+// CHECK-NEXT:     "i1 : Valid ; Container == SymRegion{reg_$[[#]]<std::vector<int> & V>} ; Offset == conj_$[[#]]{long, LC[[#]], S[[#]], #[[#]]}"
+// CHECK-NEXT:   ]}
+}