From c0b8aa2bf4f138c75b90fc5f182d53c8f9241e1a Mon Sep 17 00:00:00 2001
From: "C. Masloch" <pushbx@ulukai.org>
Date: Sat, 21 May 2022 15:32:55 +0200
Subject: [PATCH] task: return Invalid format on empty executable (fixes #70)

---
 kernel/task.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/kernel/task.c b/kernel/task.c
index bcfafb5..e39a9c4 100644
--- a/kernel/task.c
+++ b/kernel/task.c
@@ -844,6 +844,8 @@ COUNT DosExec(COUNT mode, exec_blk FAR * ep, BYTE FAR * lp)
   else if (rc != 0)
   {
     rc = DosComLoader(lp, &TempExeBlock, mode, fd);
+  } else {
+    rc = DE_INVLDFMT;
   }
 
   DosCloseSft(fd, FALSE);