bug fixes

src/runtime/o_func.c

@@ -46,8 +46,16 @@ Object *Object_FromNojaFunction(Runtime *runtime, Executable *exe, int index, He
 	if(func == NULL)
 		return NULL;
 
+	Executable *exe_copy = Executable_Copy(exe);
+
+	if(exe_copy == NULL)
+		{
+			Error_Report(error, 1, "Failed to copy executable");
+			return NULL;
+		}
+
 	func->runtime = runtime;
-	func->exe = exe;
+	func->exe = exe_copy;
 	func->index = index;
 	return (Object*) func;
 }

src/utils/source.c

@@ -155,6 +155,9 @@ Source *Source_FromString(const char *name, const char *body, int size, Error *e
 
 	if(name)
 		strcpy(s->name, name);
+	else
+		s->name = NULL;
+	
 	strncpy(s->body, body, size);
 	return s;
 }