From c111163bec33125772a4321ac5913cda136c0676 Mon Sep 17 00:00:00 2001
From: Peter Veenstra <qbix79@users.sourceforge.net>
Date: Sat, 26 Jun 2010 11:17:48 +0000
Subject: [PATCH] Fix Dactylus Installer. (thanks ripsaw8080)

Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@3616
---
 src/dos/dos_files.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/dos/dos_files.cpp b/src/dos/dos_files.cpp
index c720fd9a..1734035e 100644
--- a/src/dos/dos_files.cpp
+++ b/src/dos/dos_files.cpp
@@ -203,6 +203,13 @@ bool DOS_GetCurrentDir(Bit8u drive,char * const buffer) {
 
 bool DOS_ChangeDir(char const * const dir) {
 	Bit8u drive;char fulldir[DOS_PATHLENGTH];
+	const char * testdir=dir;
+	if (strlen(testdir) && testdir[1]==':') testdir+=2;
+	size_t len=strlen(testdir);
+	if (!len || (len>1 && testdir[len-1]=='\\')) {
+		DOS_SetError(DOSERR_PATH_NOT_FOUND);
+		return false;
+	}
 	if (!DOS_MakeName(dir,fulldir,&drive)) return false;
 	
 	if (Drives[drive]->TestDir(fulldir)) {