https://bugs.gentoo.org/915133
https://github.com/cdrdao/cdrdao/issues/22
https://github.com/cdrdao/cdrdao/pull/21

From 251a40ab42305c412674c7c2d391374d91e91c95 Mon Sep 17 00:00:00 2001
From: Ole Bertram <git@bertr.am>
Date: Thu, 23 Mar 2023 17:08:48 +0100
Subject: [PATCH] Fix uninitialized TOC data file name

This caused spurious garbled TOC files and/or segfaults when not using
the `--datafile` option.
---
 dao/main.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/dao/main.cc b/dao/main.cc
index 8bf4590..d09fc69 100644
--- a/dao/main.cc
+++ b/dao/main.cc
@@ -219,6 +219,7 @@ DaoCommandLine::DaoCommandLine() :
     fullBurn(false), withCddb(false), taoSource(false), keepImage(false), overburn(false),
     writeSpeedControl(false), keep(false), printQuery(false), no_utf8(false)
 {
+    dataFilename = NULL;
     readingSpeed = -1;
     writingSpeed = -1;
     command = UNKNOWN;