--- lbbs/src/menu.c	2025/11/05 04:19:21	1.84
+++ lbbs/src/menu.c	2025/11/17 14:01:13	1.87
@@ -6,6 +6,10 @@
  * Copyright (C) 2004-2025  Leaflet <leaflet@leafok.com>
  */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
 #include "bbs.h"
 #include "bbs_cmd.h"
 #include "bbs_cmd.h"
@@ -188,7 +192,7 @@ int load_menu(MENU_SET *p_menu_set, cons
 					return -1;
 				}
 				p = q;
-				while (isalnum(*q) || *q == '_' || *q == '-')
+				while (isalnum((int)*q) || *q == '_' || *q == '-')
 				{
 					q++;
 				}
@@ -271,7 +275,7 @@ int load_menu(MENU_SET *p_menu_set, cons
 						else
 						{
 							q = p;
-							while (isalnum(*q) || *q == '_' || *q == '-')
+							while (isalnum((int)*q) || *q == '_' || *q == '-')
 							{
 								q++;
 							}
@@ -298,7 +302,7 @@ int load_menu(MENU_SET *p_menu_set, cons
 							return -1;
 						}
 						p = q;
-						while (isdigit(*q))
+						while (isdigit((int)*q))
 						{
 							q++;
 						}
@@ -317,7 +321,7 @@ int load_menu(MENU_SET *p_menu_set, cons
 							return -1;
 						}
 						p = q;
-						while (isdigit(*q))
+						while (isdigit((int)*q))
 						{
 							q++;
 						}
@@ -336,7 +340,7 @@ int load_menu(MENU_SET *p_menu_set, cons
 							return -1;
 						}
 						p = q;
-						while (isdigit(*q))
+						while (isdigit((int)*q))
 						{
 							q++;
 						}
@@ -355,7 +359,7 @@ int load_menu(MENU_SET *p_menu_set, cons
 							return -1;
 						}
 						p = q;
-						while (isdigit(*q))
+						while (isdigit((int)*q))
 						{
 							q++;
 						}
@@ -460,7 +464,7 @@ int load_menu(MENU_SET *p_menu_set, cons
 							return -1;
 						}
 						p = q;
-						while (isdigit(*q))
+						while (isdigit((int)*q))
 						{
 							q++;
 						}
@@ -479,7 +483,7 @@ int load_menu(MENU_SET *p_menu_set, cons
 							return -1;
 						}
 						p = q;
-						while (isdigit(*q))
+						while (isdigit((int)*q))
 						{
 							q++;
 						}
@@ -547,7 +551,7 @@ int load_menu(MENU_SET *p_menu_set, cons
 							return -1;
 						}
 						p = q;
-						while (isdigit(*q))
+						while (isdigit((int)*q))
 						{
 							q++;
 						}
@@ -566,7 +570,7 @@ int load_menu(MENU_SET *p_menu_set, cons
 							return -1;
 						}
 						p = q;
-						while (isdigit(*q))
+						while (isdigit((int)*q))
 						{
 							q++;
 						}
@@ -585,7 +589,7 @@ int load_menu(MENU_SET *p_menu_set, cons
 							return -1;
 						}
 						p = q;
-						while (isalnum(*q) || *q == '_' || *q == '-')
+						while (isalnum((int)*q) || *q == '_' || *q == '-')
 						{
 							q++;
 						}
@@ -615,7 +619,7 @@ int load_menu(MENU_SET *p_menu_set, cons
 							return -1;
 						}
 						p = q;
-						while (isdigit(*q))
+						while (isdigit((int)*q))
 						{
 							q++;
 						}
@@ -634,7 +638,7 @@ int load_menu(MENU_SET *p_menu_set, cons
 							return -1;
 						}
 						p = q;
-						while (isdigit(*q))
+						while (isdigit((int)*q))
 						{
 							q++;
 						}
@@ -653,7 +657,7 @@ int load_menu(MENU_SET *p_menu_set, cons
 							return -1;
 						}
 						p = q;
-						while (isdigit(*q))
+						while (isdigit((int)*q))
 						{
 							q++;
 						}
@@ -699,7 +703,7 @@ int load_menu(MENU_SET *p_menu_set, cons
 				p_screen = get_menu_screen_by_id(p_menu_set, screen_id);
 
 				q = p;
-				while (isalnum(*q) || *q == '_' || *q == '-')
+				while (isalnum((int)*q) || *q == '_' || *q == '-')
 				{
 					q++;
 				}
@@ -1424,7 +1428,16 @@ int set_menu_shm_readonly(MENU_SET *p_me
 	void *p_shm;
 
 	// Remap shared memory in read-only mode
+#if defined(__CYGWIN__)
+	if (shmdt(p_menu_set->p_reserved) == -1)
+	{
+		log_error("shmdt() error (%d)\n", errno);
+		return -1;
+	}
+	p_shm = shmat(p_menu_set->shmid, p_menu_set->p_reserved, SHM_RDONLY);
+#else
 	p_shm = shmat(p_menu_set->shmid, p_menu_set->p_reserved, SHM_RDONLY | SHM_REMAP);
+#endif
 	if (p_shm == (void *)-1)
 	{
 		log_error("shmat(menu_shm shmid = %d) error (%d)\n", p_menu_set->shmid, errno);