From 0674d6eaf144d2765d77c6a1805b99b8d5eebfd5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Klaus=20K=C3=A4mpf?= <kkaempf@gmail.com>
Date: Mon, 26 Feb 2024 18:59:23 +0100
Subject: [PATCH] Don't resize DiskCache without a file
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DiskCache computes its size from a file.
Skip ResizeCache Without file (i.e. 'empty' CD)

Fixes #1426

Signed-off-by: Klaus Kämpf <kkaempf@gmail.com>
---
 cpp/devices/scsicd.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/cpp/devices/scsicd.cpp b/cpp/devices/scsicd.cpp
index e1d356bd..a9f9717d 100644
--- a/cpp/devices/scsicd.cpp
+++ b/cpp/devices/scsicd.cpp
@@ -179,7 +179,11 @@ void SCSICD::ModeSelect(scsi_command cmd, cdb_t cdb, span<const uint8_t> buf, in
 		ClearTrack();
 		CreateDataTrack();
 		FlushCache();
-		ResizeCache(GetFilename(), GetRawMode());
+                string filename;
+                if ((filename = GetFilename()) != "") {
+                    // DiskCache fails without a file to compute the cache size
+                    ResizeCache(filename, GetRawMode());
+                }
 	}
 
 	if (const string result = scsi_command_util::ModeSelect(cmd, cdb, buf, length, sector_size);