Bugfix Lua 5.4 not working #5781

In Lua 5.4 the function lua_resume now has an extra parameter. This out parameter returns the number of values on the top of the stack that were yielded or returned by the coroutine (in previous versions, those values were the entire stack.). The constant LUA_ERRGCMM was removed. Errors in finalizers are never propagated; instead, they generate a warning.

Author: OgreTransporter

third_party/sol2/sol2/sol.hpp

@@ -3399,7 +3399,9 @@ namespace sol {
 		runtime = LUA_ERRRUN,
 		memory = LUA_ERRMEM,
 		handler = LUA_ERRERR,
+#if SOL_LUA_VERSION < 504
 		gc = LUA_ERRGCMM,
+#endif
 		syntax = LUA_ERRSYNTAX,
 		file = LUA_ERRFILE,
 	};
@@ -3409,7 +3411,9 @@ namespace sol {
 		yielded = LUA_YIELD,
 		runtime = LUA_ERRRUN,
 		memory = LUA_ERRMEM,
+#if SOL_LUA_VERSION < 504
 		gc = LUA_ERRGCMM,
+#endif
 		handler = LUA_ERRERR,
 		dead = -1,
 	};
@@ -3418,7 +3422,9 @@ namespace sol {
 		ok = LUA_OK,
 		syntax = LUA_ERRSYNTAX,
 		memory = LUA_ERRMEM,
+#if SOL_LUA_VERSION < 504
 		gc = LUA_ERRGCMM,
+#endif
 		file = LUA_ERRFILE,
 	};
 
@@ -3462,8 +3468,10 @@ namespace sol {
 			return names[3];
 		case call_status::handler:
 			return names[4];
+#if SOL_LUA_VERSION < 504
 		case call_status::gc:
 			return names[5];
+#endif
 		case call_status::syntax:
 			return names[6];
 		case call_status::file:
@@ -3485,8 +3493,10 @@ namespace sol {
 			return names[0];
 		case load_status::memory:
 			return names[1];
+#if SOL_LUA_VERSION < 504
 		case load_status::gc:
 			return names[2];
+#endif
 		case load_status::syntax:
 			return names[3];
 		case load_status::file:
@@ -14374,9 +14384,12 @@ namespace sol {
 		void luacall(std::ptrdiff_t argcount, std::ptrdiff_t) {
 #if SOL_LUA_VERSION < 502
 			stats = static_cast<call_status>(lua_resume(lua_state(), static_cast<int>(argcount)));
-#else
+#elif SOL_LUA_VERSION < 504
 			stats = static_cast<call_status>(lua_resume(lua_state(), nullptr, static_cast<int>(argcount)));
-#endif // Lua 5.1 compat
+#else
+			int nstack = 0;
+			stats = static_cast<call_status>(lua_resume(lua_state(), nullptr, static_cast<int>(argcount), &nstack));
+#endif
 		}
 
 		template<std::size_t... I, typename... Ret>