Fix compilation errors

Author: bab2min

include/kiwi/TemplateUtils.hpp

@@ -56,7 +56,10 @@ namespace kiwi
 		};
 
 		template<class Ty>
-		struct SeqMax;
+		struct SeqMax
+		{
+			static constexpr std::ptrdiff_t value = 0;
+		};
 
 		template<std::ptrdiff_t i>
 		struct SeqMax<seq<i>>
@@ -130,7 +133,7 @@ namespace kiwi
 		template<class ValTy, class SeqTy>
 		class Table
 		{
-			ValTy table[SeqMax<SeqTy>::value + 1];
+			std::array<ValTy, SeqMax<SeqTy>::value + 1> table;
 
 			template<class ValGetter>
 			void set(seq<>)
@@ -153,6 +156,7 @@ namespace kiwi
 
 			constexpr ValTy operator[](std::ptrdiff_t idx) const
 			{
+				if (idx < 0 || (size_t)idx >= table.size()) return ValTy{};
 				return table[idx];
 			}
 		};

src/Combiner.cpp

@@ -2,6 +2,7 @@
 #include <iostream>
 #include <unordered_set>
 #include <algorithm>
+#include <limits>
 
 #include <kiwi/Utils.h>
 #include <kiwi/TagUtils.h>