From a4593a8f586228ca8738489aa16c56945e3e1350 Mon Sep 17 00:00:00 2001
From: StapleButter <thetotalworm@gmail.com>
Date: Mon, 31 Dec 2018 04:54:17 +0100
Subject: also, detect bad old romlist.bin and warn the user.

---
 src/libui_sdl/main.cpp | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'src')

diff --git a/src/libui_sdl/main.cpp b/src/libui_sdl/main.cpp
index 0999555..368e8d8 100644
--- a/src/libui_sdl/main.cpp
+++ b/src/libui_sdl/main.cpp
@@ -1717,6 +1717,24 @@ int main(int argc, char** argv)
         return 0;
     }
 
+    {
+        FILE* f = melon_fopen_local("romlist.bin", "rb");
+        if (f)
+        {
+            u32 data;
+            fread(&data, 4, 1, f);
+            fclose(f);
+
+            if ((data >> 24) == 0) // old CRC-based list
+            {
+                uiMsgBoxError(NULL,
+                              "Your version of romlist.bin is outdated.",
+                              "Save memory type detection will not work correctly.\n\n"
+                              "You should use the latest version of romlist.bin (provided in melonDS release packages).");
+            }
+        }
+    }
+
     uiMenu* menu;
     uiMenuItem* menuitem;
 
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