Small fix in cmake file. Fixes #1809.

runtime/Cpp/CMakeLists.txt

@@ -28,6 +28,10 @@ if(CMAKE_VERSION VERSION_EQUAL "3.0.0" OR
   CMAKE_POLICY(SET CMP0026 OLD)
   CMAKE_POLICY(SET CMP0045 OLD)
   CMAKE_POLICY(SET CMP0042 OLD)
+endif()
+
+if(CMAKE_VERSION VERSION_EQUAL "3.3.0" OR
+   CMAKE_VERSION VERSION_GREATER "3.3.0")
   CMAKE_POLICY(SET CMP0059 OLD)
 endif()
 

runtime/Cpp/runtime/src/atn/ParserATNSimulator.cpp

@@ -510,7 +510,7 @@ std::unique_ptr<ATNConfigSet> ParserATNSimulator::computeReachSet(ATNConfigSet *
     }
   }
 
-  if (t == Token::EOF) {
+  if (t == IntStream::EOF) {
     /* After consuming EOF no additional input is possible, so we are
      * only interested in configurations which reached the end of the
      * decision rule (local context) or end of the start rule (full
@@ -528,7 +528,7 @@ std::unique_ptr<ATNConfigSet> ParserATNSimulator::computeReachSet(ATNConfigSet *
      * already guaranteed to meet this condition whether or not it's
      * required.
      */
-    ATNConfigSet * temp = removeAllConfigsNotInRuleStopState(reach.get(), reach == intermediate);
+    ATNConfigSet *temp = removeAllConfigsNotInRuleStopState(reach.get(), *reach == *intermediate);
     if (temp != reach.get())
       reach.reset(temp); // We got a new set, so use that.
   }
@@ -954,7 +954,7 @@ bool ParserATNSimulator::canDropLoopEntryEdgeInLeftRecursiveRule(ATNConfig *conf
   // left-recursion elimination. For efficiency, also check if
   // the context has an empty stack case. If so, it would mean
   // global FOLLOW so we can't perform optimization
-  if ( p->getStateType() != ATNState::STAR_LOOP_ENTRY ||
+  if (p->getStateType() != ATNState::STAR_LOOP_ENTRY ||
       !((StarLoopEntryState *)p)->isPrecedenceDecision || // Are we the special loop entry/exit state?
       config->context->isEmpty() ||                      // If SLL wildcard
       config->context->hasEmptyPath())