ADDITIONAL SYSTEM INFORMATION :
openjdk 26-ea 2026-03-17
OpenJDK Runtime Environment (build 26-ea+6-582)
OpenJDK 64-Bit Server VM (build 26-ea+6-582, mixed mode, sharing)

Windows 24H2

A DESCRIPTION OF THE PROBLEM :

This is a regression caused by the fact that the fix (https://github.com/openjdk/jdk/pull/25713 / https://github.com/openjdk/jdk/commit/9449fea2cd7aa7375f1b127e5f0d2a36ffaa1814) for JDK-8358552 is not sufficient. I personally tried to fix that bug by myself but gave up due to *this* regression.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. jdk-26/bin/jshell
2. jshell> IO.readln() or jshell> System.in.read()
3. Press Ctrl + D
4. Run 2. once again

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
JShell pauses for additional input like when 2.
ACTUAL -
JShell won't accept input and returns the same result as 3.

The fact that the empty lines between the commands and the results in $2 or later lack shows that JShell didn't pause there.

===== IO.readln() =====

jshell> IO.readln()

$1 ==> null

jshell> IO.readln()
$2 ==> null

jshell> IO.readln()
$3 ==> null

===== System.in.read() =====

jshell> System.in.read()

$1 ==> -1

jshell> System.in.read()
$2 ==> -1

jshell> System.in.read()
$3 ==> -1

jshell> System.in.read()
$4 ==> -1

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// JShell only
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