Costume Quest: "Disk cannot be read" crash on startup

[CathalMullan]

Costume Quest via Wine WOW64 on aarch64 shows "Disk cannot be read" dialogs on startup, followed by a crash.

With WINEDEBUG=+file set, the issue seems to be related to ReadFileEx use:

0428:trace:file:ReadFileEx (file=000000E4, buffer=05B5D1E0, bytes=2048, ovl=05B5D168, ovl_fn=00709C50)

Threw Claude at the issue, the following change seemed to fix the issue:

--- a/wine/wow64/wowbox64.c
+++ b/wine/wow64/wowbox64.c
@@ -433,6 +433,7 @@
         } else {
             R_EAX = Wow64SystemServiceEx(id, ULongToPtr(ctx->Esp + 4));
         }
+        ctx->Eax = R_EAX;

         fpu_to_box(ctx, emu);

But I'm not knowledgeable enough in the codebase to assess if that's a valid fix.

Env

• Box64 v0.4.1-3
• Wine 11.6
• aarch64-linux

[ptitSeb]

Indeed, there was something suspicious there. It should be fixed now.

[CathalMullan]

Can confirm the fix works, thanks!