From 94cf53979640ff8a29d445a2b056a6b17c7b3e49 Mon Sep 17 00:00:00 2001
From: Julian Andres Klode <julian.klode@canonical.com>
Date: Fri, 23 Apr 2021 15:01:07 +0200
Subject: Avoid infinite loop on EOF on media change prompt

The code missed a break, so it was looping infinitely because
the while loop condition only checked for '\n' and '\r', but not
end of file.
---
 apt-private/acqprogress.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/apt-private/acqprogress.cc b/apt-private/acqprogress.cc
index b37934cd4..fa7edfc82 100644
--- a/apt-private/acqprogress.cc
+++ b/apt-private/acqprogress.cc
@@ -322,8 +322,10 @@ bool AcqTextStatus::MediaChange(std::string Media, std::string Drive)
    while (C != '\n' && C != '\r')
    {
       int len = read(STDIN_FILENO,&C,1);
-      if(C == 'c' || len <= 0)
+      if(C == 'c' || len <= 0) {
 	 bStatus = false;
+	 break;
+      }
    }
 
    if(bStatus)
-- 
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