Fix a warning on compiling with clang (#5258)

include/flatbuffers/reflection_generated.h

@@ -95,7 +95,7 @@ inline const char * const *EnumNamesBaseType() {
 
 inline const char *EnumNameBaseType(BaseType e) {
   if (e < None || e > Union) return "";
-  const size_t index = static_cast<int>(e);
+  const size_t index = static_cast<size_t>(e);
   return EnumNamesBaseType()[index];
 }
 

samples/monster_generated.h

@@ -59,7 +59,7 @@ inline const char * const *EnumNamesColor() {
 
 inline const char *EnumNameColor(Color e) {
   if (e < Color_Red || e > Color_Blue) return "";
-  const size_t index = static_cast<int>(e);
+  const size_t index = static_cast<size_t>(e);
   return EnumNamesColor()[index];
 }
 
@@ -89,7 +89,7 @@ inline const char * const *EnumNamesEquipment() {
 
 inline const char *EnumNameEquipment(Equipment e) {
   if (e < Equipment_NONE || e > Equipment_Weapon) return "";
-  const size_t index = static_cast<int>(e);
+  const size_t index = static_cast<size_t>(e);
   return EnumNamesEquipment()[index];
 }
 

src/idl_gen_cpp.cpp

@@ -1017,10 +1017,10 @@ class CppGenerator : public BaseGenerator {
                " || e > " + GetEnumValUse(enum_def, *enum_def.vals.vec.back()) +
                ") return \"\";";
 
-      code_ += "  const size_t index = static_cast<int>(e)\\";
+      code_ += "  const size_t index = static_cast<size_t>(e)\\";
       if (enum_def.vals.vec.front()->value) {
         auto vals = GetEnumValUse(enum_def, *enum_def.vals.vec.front());
-        code_ += " - static_cast<int>(" + vals + ")\\";
+        code_ += " - static_cast<size_t>(" + vals + ")\\";
       }
       code_ += ";";
 

tests/monster_test_generated.h

@@ -133,7 +133,7 @@ inline const char * const *EnumNamesColor() {
 
 inline const char *EnumNameColor(Color e) {
   if (e < Color_Red || e > Color_Blue) return "";
-  const size_t index = static_cast<int>(e) - static_cast<int>(Color_Red);
+  const size_t index = static_cast<size_t>(e) - static_cast<size_t>(Color_Red);
   return EnumNamesColor()[index];
 }
 
@@ -169,7 +169,7 @@ inline const char * const *EnumNamesAny() {
 
 inline const char *EnumNameAny(Any e) {
   if (e < Any_NONE || e > Any_MyGame_Example2_Monster) return "";
-  const size_t index = static_cast<int>(e);
+  const size_t index = static_cast<size_t>(e);
   return EnumNamesAny()[index];
 }
 
@@ -310,7 +310,7 @@ inline const char * const *EnumNamesAnyUniqueAliases() {
 
 inline const char *EnumNameAnyUniqueAliases(AnyUniqueAliases e) {
   if (e < AnyUniqueAliases_NONE || e > AnyUniqueAliases_M2) return "";
-  const size_t index = static_cast<int>(e);
+  const size_t index = static_cast<size_t>(e);
   return EnumNamesAnyUniqueAliases()[index];
 }
 
@@ -451,7 +451,7 @@ inline const char * const *EnumNamesAnyAmbiguousAliases() {
 
 inline const char *EnumNameAnyAmbiguousAliases(AnyAmbiguousAliases e) {
   if (e < AnyAmbiguousAliases_NONE || e > AnyAmbiguousAliases_M3) return "";
-  const size_t index = static_cast<int>(e);
+  const size_t index = static_cast<size_t>(e);
   return EnumNamesAnyAmbiguousAliases()[index];
 }
 

tests/namespace_test/namespace_test1_generated.h

@@ -46,7 +46,7 @@ inline const char * const *EnumNamesEnumInNestedNS() {
 
 inline const char *EnumNameEnumInNestedNS(EnumInNestedNS e) {
   if (e < EnumInNestedNS_A || e > EnumInNestedNS_C) return "";
-  const size_t index = static_cast<int>(e);
+  const size_t index = static_cast<size_t>(e);
   return EnumNamesEnumInNestedNS()[index];
 }
 

tests/union_vector/union_vector_generated.h

@@ -74,7 +74,7 @@ inline const char * const *EnumNamesCharacter() {
 
 inline const char *EnumNameCharacter(Character e) {
   if (e < Character_NONE || e > Character_Unused) return "";
-  const size_t index = static_cast<int>(e);
+  const size_t index = static_cast<size_t>(e);
   return EnumNamesCharacter()[index];
 }