From f6ffcd948118301438b42071edd0367f6c3b7f06 Mon Sep 17 00:00:00 2001
From: arcoRocks <33952704+arcoRocks@users.noreply.github.com>
Date: Mon, 4 Dec 2017 13:41:59 +0100
Subject: [PATCH] Fix for #387

---
 include/chaiscript/language/chaiscript_parser.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/chaiscript/language/chaiscript_parser.hpp b/include/chaiscript/language/chaiscript_parser.hpp
index 77eec4e2..349354d9 100644
--- a/include/chaiscript/language/chaiscript_parser.hpp
+++ b/include/chaiscript/language/chaiscript_parser.hpp
@@ -914,7 +914,7 @@ namespace chaiscript
             } break;
             case utility::fnv1a_32("__FUNC__"): {
               std::string fun_name = "NOT_IN_FUNCTION";
-              for (size_t idx = m_match_stack.size() - 1; idx > 0; --idx)
+              for (size_t idx = m_match_stack.empty() ? 0 : m_match_stack.size() - 1; idx > 0; --idx)
               {
                 if (m_match_stack[idx-1]->identifier == AST_Node_Type::Id
                     && m_match_stack[idx-0]->identifier == AST_Node_Type::Arg_List) {
@@ -927,7 +927,7 @@ namespace chaiscript
             } break;
             case utility::fnv1a_32("__CLASS__"): {
               std::string fun_name = "NOT_IN_CLASS";
-              for (size_t idx = m_match_stack.size() - 1; idx > 1; --idx)
+              for (size_t idx = m_match_stack.empty() ? 0 : m_match_stack.size() - 1; idx > 1; --idx)
               {
                 if (m_match_stack[idx-2]->identifier == AST_Node_Type::Id
                     && m_match_stack[idx-1]->identifier == AST_Node_Type::Id