convert iterators using static_cast

Newer versions of LLVM do not allow to implicitly cast iterators to
pointers where they point. So convert all such uses to explicit
static_cast, the same as LLVM code does.

Otherwise we see errors like:
lib/Core/Executor.cpp:548:15: error: no viable conversion from 'Module::iterator' (aka 'ilist_iterator<llvm::Function>') to 'llvm::Function *'
    Function *f = i;
              ^   ~

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>

2 files changed, 40 insertions, 31 deletions

diff --git a/lib/Core/Executor.cpp b/lib/Core/Executor.cpp
index d8a4a32c..c5d294fb 100644
--- a/lib/Core/Executor.cpp
+++ b/lib/Core/Executor.cpp
@@ -539,7 +539,7 @@ void Executor::initializeGlobals(ExecutionState &state) {
   // ensures that we won't conflict. we don't need to allocate a memory object
   // since reading/writing via a function pointer is unsupported anyway.
   for (Module::iterator i = m->begin(), ie = m->end(); i != ie; ++i) {
-    Function *f = i;
+    Function *f = static_cast<Function *>(i);
     ref<ConstantExpr> addr(0);
 
     // If the symbol has external weak linkage then it is implicitly
@@ -593,7 +593,8 @@ void Executor::initializeGlobals(ExecutionState &state) {
   for (Module::const_global_iterator i = m->global_begin(),
          e = m->global_end();
        i != e; ++i) {
-    size_t globalObjectAlignment = getAllocationAlignment(i);
+    const GlobalVariable *v = static_cast<const GlobalVariable *>(i);
+    size_t globalObjectAlignment = getAllocationAlignment(v);
     if (i->isDeclaration()) {
       // FIXME: We have no general way of handling unknown external
       // symbols. If we really cared about making external stuff work
@@ -626,11 +627,11 @@ void Executor::initializeGlobals(ExecutionState &state) {
       }
 
       MemoryObject *mo = memory->allocate(size, /*isLocal=*/false,
-                                          /*isGlobal=*/true, /*allocSite=*/i,
+                                          /*isGlobal=*/true, /*allocSite=*/v,
                                           /*alignment=*/globalObjectAlignment);
       ObjectState *os = bindObjectInState(state, mo, false);
-      globalObjects.insert(std::make_pair(i, mo));
-      globalAddresses.insert(std::make_pair(i, mo->getBaseExpr()));
+      globalObjects.insert(std::make_pair(v, mo));
+      globalAddresses.insert(std::make_pair(v, mo->getBaseExpr()));
 
       // Program already running = object already initialized.  Read
       // concrete value and write it to our copy.
@@ -652,13 +653,13 @@ void Executor::initializeGlobals(ExecutionState &state) {
       LLVM_TYPE_Q Type *ty = i->getType()->getElementType();
       uint64_t size = kmodule->targetData->getTypeStoreSize(ty);
       MemoryObject *mo = memory->allocate(size, /*isLocal=*/false,
-                                          /*isGlobal=*/true, /*allocSite=*/&*i,
+                                          /*isGlobal=*/true, /*allocSite=*/v,
                                           /*alignment=*/globalObjectAlignment);
       if (!mo)
         llvm::report_fatal_error("out of memory");
       ObjectState *os = bindObjectInState(state, mo, false);
-      globalObjects.insert(std::make_pair(i, mo));
-      globalAddresses.insert(std::make_pair(i, mo->getBaseExpr()));
+      globalObjects.insert(std::make_pair(v, mo));
+      globalAddresses.insert(std::make_pair(v, mo->getBaseExpr()));
 
       if (!i->hasInitializer())
           os->initializeToRandom();
@@ -670,7 +671,8 @@ void Executor::initializeGlobals(ExecutionState &state) {
        i != ie; ++i) {
     // Map the alias to its aliasee's address. This works because we have
     // addresses for everything, even undefined functions. 
-    globalAddresses.insert(std::make_pair(i, evalConstant(i->getAliasee())));
+    globalAddresses.insert(std::make_pair(static_cast<GlobalAlias *>(i),
+	  evalConstant(i->getAliasee())));
   }
 
   // once all objects are allocated, do the actual initialization
@@ -678,7 +680,8 @@ void Executor::initializeGlobals(ExecutionState &state) {
          e = m->global_end();
        i != e; ++i) {
     if (i->hasInitializer()) {
-      MemoryObject *mo = globalObjects.find(i)->second;
+      const GlobalVariable *v = static_cast<const GlobalVariable *>(i);
+      MemoryObject *mo = globalObjects.find(v)->second;
       const ObjectState *os = state.addressSpace.findObject(mo);
       assert(os);
       ObjectState *wos = state.addressSpace.getWriteable(mo, os);
@@ -3543,10 +3546,11 @@ void Executor::runFunctionAsMain(Function *f,
   if (ai!=ae) {
     arguments.push_back(ConstantExpr::alloc(argc, Expr::Int32));
     if (++ai!=ae) {
+      Instruction *first = static_cast<Instruction *>(f->begin()->begin());
       argvMO =
           memory->allocate((argc + 1 + envc + 1 + 1) * NumPtrBytes,
                            /*isLocal=*/false, /*isGlobal=*/true,
-                           /*allocSite=*/f->begin()->begin(), /*alignment=*/8);
+                           /*allocSite=*/first, /*alignment=*/8);
 
       if (!argvMO)
         klee_error("Could not allocate memory for function arguments");
diff --git a/lib/Core/StatsTracker.cpp b/lib/Core/StatsTracker.cpp
index dbd86524..ccf6e04d 100644
--- a/lib/Core/StatsTracker.cpp
+++ b/lib/Core/StatsTracker.cpp
@@ -165,7 +165,7 @@ static bool instructionIsCoverable(Instruction *i) {
     if (it==bb->begin()) {
       return true;
     } else {
-      Instruction *prev = --it;
+      Instruction *prev = static_cast<Instruction *>(--it);
       if (isa<CallInst>(prev) || isa<InvokeInst>(prev)) {
         Function *target =
             getDirectCallTarget(prev, /*moduleIsFullyLinked=*/true);
@@ -539,7 +539,8 @@ void StatsTracker::writeIStats() {
       // Always try to write the filename before the function name, as otherwise
       // KCachegrind can create two entries for the function, one with an
       // unnamed file and one without.
-      const InstructionInfo &ii = executor.kmodule->infos->getFunctionInfo(fnIt);
+      Function *fn = static_cast<Function *>(fnIt);
+      const InstructionInfo &ii = executor.kmodule->infos->getFunctionInfo(fn);
       if (ii.file != sourceFile) {
         of << "fl=" << ii.file << "\n";
         sourceFile = ii.file;
@@ -635,9 +636,9 @@ static std::vector<Instruction*> getSuccs(Instruction *i) {
 
   if (i==bb->getTerminator()) {
     for (succ_iterator it = succ_begin(bb), ie = succ_end(bb); it != ie; ++it)
-      res.push_back(it->begin());
+      res.push_back(static_cast<Instruction *>(it->begin()));
   } else {
-    res.push_back(++BasicBlock::iterator(i));
+    res.push_back(static_cast<Instruction *>(++BasicBlock::iterator(i)));
   }
 
   return res;
@@ -684,18 +685,19 @@ void StatsTracker::computeReachableUncovered() {
            bbIt != bb_ie; ++bbIt) {
         for (BasicBlock::iterator it = bbIt->begin(), ie = bbIt->end(); 
              it != ie; ++it) {
-          if (isa<CallInst>(it) || isa<InvokeInst>(it)) {
-            CallSite cs(it);
+          Instruction *inst = static_cast<Instruction *>(it);
+          if (isa<CallInst>(inst) || isa<InvokeInst>(inst)) {
+            CallSite cs(inst);
             if (isa<InlineAsm>(cs.getCalledValue())) {
               // We can never call through here so assume no targets
               // (which should be correct anyhow).
-              callTargets.insert(std::make_pair(it,
+              callTargets.insert(std::make_pair(inst,
                                                 std::vector<Function*>()));
             } else if (Function *target = getDirectCallTarget(
                            cs, /*moduleIsFullyLinked=*/true)) {
-              callTargets[it].push_back(target);
+              callTargets[inst].push_back(target);
             } else {
-              callTargets[it] = 
+              callTargets[inst] =
                 std::vector<Function*>(km->escapingFunctions.begin(),
                                        km->escapingFunctions.end());
             }
@@ -716,14 +718,15 @@ void StatsTracker::computeReachableUncovered() {
     std::vector<Instruction *> instructions;
     for (Module::iterator fnIt = m->begin(), fn_ie = m->end(); 
          fnIt != fn_ie; ++fnIt) {
+      Function *fn = static_cast<Function *>(fnIt);
       if (fnIt->isDeclaration()) {
         if (fnIt->doesNotReturn()) {
-          functionShortestPath[fnIt] = 0;
+          functionShortestPath[fn] = 0;
         } else {
-          functionShortestPath[fnIt] = 1; // whatever
+          functionShortestPath[fn] = 1; // whatever
         }
       } else {
-        functionShortestPath[fnIt] = 0;
+        functionShortestPath[fn] = 0;
       }
 
       // Not sure if I should bother to preorder here. XXX I should.
@@ -731,13 +734,14 @@ void StatsTracker::computeReachableUncovered() {
            bbIt != bb_ie; ++bbIt) {
         for (BasicBlock::iterator it = bbIt->begin(), ie = bbIt->end(); 
              it != ie; ++it) {
-          instructions.push_back(it);
-          unsigned id = infos.getInfo(it).id;
+          Instruction *inst = static_cast<Instruction *>(it);
+          instructions.push_back(inst);
+          unsigned id = infos.getInfo(inst).id;
           sm.setIndexedValue(stats::minDistToReturn, 
                              id, 
-                             isa<ReturnInst>(it)
+                             isa<ReturnInst>(inst)
 #if LLVM_VERSION_CODE < LLVM_VERSION(3, 1)
-                             || isa<UnwindInst>(it)
+                             || isa<UnwindInst>(inst)
 #endif
                              );
         }
@@ -790,13 +794,13 @@ void StatsTracker::computeReachableUncovered() {
           // that no return instructions are reachable)
           Function *f = inst->getParent()->getParent();
           if (best != cur
-              || (inst == f->begin()->begin()
+              || (inst == static_cast<Instruction *>(f->begin()->begin())
                   && functionShortestPath[f] != best)) {
             sm.setIndexedValue(stats::minDistToReturn, id, best);
             changed = true;
 
             // Update shortest path if this is the entry point.
-            if (inst==f->begin()->begin())
+            if (inst == static_cast<Instruction *>(f->begin()->begin()))
               functionShortestPath[f] = best;
           }
         }
@@ -813,8 +817,9 @@ void StatsTracker::computeReachableUncovered() {
          bbIt != bb_ie; ++bbIt) {
       for (BasicBlock::iterator it = bbIt->begin(), ie = bbIt->end(); 
            it != ie; ++it) {
-        unsigned id = infos.getInfo(it).id;
-        instructions.push_back(&*it);
+        Instruction *inst = static_cast<Instruction *>(it);
+        unsigned id = infos.getInfo(inst).id;
+        instructions.push_back(inst);
         sm.setIndexedValue(stats::minDistToUncovered, 
                            id, 
                            sm.getIndexedValue(stats::uncoveredInstructions, id));