From a3c23387f4f5ad96b95e53ab7458f2546934004a Mon Sep 17 00:00:00 2001
From: kichikuou <KichikuouChrome@gmail.com>
Date: Fri, 20 Feb 2026 08:28:04 +0900
Subject: [PATCH] Treat invalid global group name as empty group
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Pastel Chime 3 executes system.GroupSave() with a group name of
"共有データ", but that group name does not exist in the OBJG section of
AIN.

Pascha3.exe does not treat such system.GroupSave() calls as failures,
instead behaving as if saving an empty variable group.
---
 src/savedata.c | 31 ++++++++++++++++---------------
 1 file changed, 16 insertions(+), 15 deletions(-)

diff --git a/src/savedata.c b/src/savedata.c
index a496e32..1e3fd72 100644
--- a/src/savedata.c
+++ b/src/savedata.c
@@ -194,16 +194,15 @@ static int get_gsave_version(void)
 int save_globals(const char *keyname, const char *filename, const char *group_name, int *n_out)
 {
 	int group = -1;
-	int nr_vars;
+	int nr_vars = 0;
 	if (group_name) {
 		if ((group = get_group_index(group_name)) < 0) {
 			WARNING("Unregistered global group: %s", display_sjis0(group_name));
-			return 0;
-		}
-		nr_vars = 0;
-		for (int i = 0; i < ain->nr_globals; i++) {
-			if (ain->globals[i].group_index == group)
-				nr_vars++;
+		} else {
+			for (int i = 0; i < ain->nr_globals; i++) {
+				if (ain->globals[i].group_index == group)
+					nr_vars++;
+			}
 		}
 	} else {
 		nr_vars = ain->nr_globals;
@@ -212,14 +211,16 @@ int save_globals(const char *keyname, const char *filename, const char *group_na
 	struct gsave *save = gsave_create(get_gsave_version(), keyname, ain->nr_globals, group_name);
 	gsave_add_globals_record(save, nr_vars);
 
-	struct gsave_global *global = save->globals;
-	for (int i = 0; i < ain->nr_globals; i++) {
-		if (group >= 0 && ain->globals[i].group_index != group)
-			continue;
-		global->name = strdup(ain->globals[i].name);
-		global->type = ain->globals[i].type.data;
-		global->value = add_value_to_gsave(global->type, global_get(i), save);
-		global++;
+	if (nr_vars > 0) {
+		struct gsave_global *global = save->globals;
+		for (int i = 0; i < ain->nr_globals; i++) {
+			if (group >= 0 && ain->globals[i].group_index != group)
+				continue;
+			global->name = strdup(ain->globals[i].name);
+			global->type = ain->globals[i].type.data;
+			global->value = add_value_to_gsave(global->type, global_get(i), save);
+			global++;
+		}
 	}
 
 	char *path = savedir_path(filename);