Merge pull request #49 from hzeller/fix-antlr-runtime-warnings

Fix warnings compiling antlr4 runtime.

src/API/PythonAPI.cpp

diff --git a/src/API/PythonAPI.cpp b/src/API/PythonAPI.cpp
index 8028d69..4fdfca3 100644
--- a/src/API/PythonAPI.cpp
+++ b/src/API/PythonAPI.cpp
@@ -271,7 +271,7 @@
       Py_DECREF(pArgs);
       if (pValue != NULL) {
         long int size;
-        char* compName = PyUnicode_AsUTF8AndSize(pValue, &size);
+        const char* compName = PyUnicode_AsUTF8AndSize(pValue, &size);
         if (compName == NULL) {
           std::cout << "PYTHON API ERROR: Incorrect function return type, "
                        "expecting a string: "

src/CommandLine/CommandLineParser.cpp

diff --git a/src/CommandLine/CommandLineParser.cpp b/src/CommandLine/CommandLineParser.cpp
index 9ddccb7..e64a826 100644
--- a/src/CommandLine/CommandLineParser.cpp
+++ b/src/CommandLine/CommandLineParser.cpp
@@ -45,7 +45,7 @@
 std::string CommandLineParser::m_versionNumber = "1.00";
 
 const std::vector<std::string> copyright = {
-    "Copyright (c) 2017-2019 Alain Dargelas,", 
+    "Copyright (c) 2017-2019 Alain Dargelas,",
     "http://www.apache.org/licenses/LICENSE-2.0"};
 
 const std::vector<std::string> banner = {
@@ -293,7 +293,7 @@
     if (tmp.size() && (tmp != prefix)) {
       std::string def;
       std::string value;
-      unsigned int loc = tmp.find("=");
+      const size_t loc = tmp.find("=");
       if (loc == std::string::npos) {
         SymbolId id = m_symbolTable->registerSymbol(tmp);
         container.insert(std::make_pair(id, std::string()));
@@ -381,7 +381,7 @@
           std::string def;
           std::string value;
           std::string tmp = argv[i];
-          unsigned int loc = tmp.find ("=");
+          const size_t loc = tmp.find ("=");
           if (loc == std::string::npos)
             {
               StringUtils::registerEnvVar (def, "");