From c45fc388565bc082c16f0ca7dd6998c48506723b Mon Sep 17 00:00:00 2001
From: Dave Davenport <qball@blame.services>
Date: Fri, 29 Oct 2021 00:39:51 +0200
Subject: [PATCH] [Combi] Add a check against recursion.

Fixes: #1510
---
 source/dialogs/combi.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/source/dialogs/combi.c b/source/dialogs/combi.c
index ee4c0421..354a23f6 100644
--- a/source/dialogs/combi.c
+++ b/source/dialogs/combi.c
@@ -67,6 +67,11 @@ static void combi_mode_parse_switchers(Mode *sw) {
   // Split token on ','. This modifies switcher_str.
   for (char *token = strtok_r(switcher_str, sep, &savept); token != NULL;
        token = strtok_r(NULL, sep, &savept)) {
+    /* Check against recursion. */
+    if ( g_strcmp0(token, sw->name) == 0 ){
+      g_warning("You cannot add '%s' to the list of combined modi.", sw->name);
+      continue;
+    }
     // Resize and add entry.
     pd->switchers = (CombiMode *)g_realloc(
         pd->switchers, sizeof(CombiMode) * (pd->num_switchers + 1));