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On a second look, this is a bit more complex - the exception has to be transported. So UserException does not handle suppressed exceptions at all; ExecutionControlForwarder, LocalExecutionControl, StreamingExecutionControl all need to update for suppressed
exception handling. In particular, changing the forwarder's protocol might be a bit risky; I wonder if we want to dig into this.</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> compiler-dev <compiler-dev-retn@openjdk.org> on behalf of Chen Liang <chen.l.liang@oracle.com><br>
<b>Sent:</b> Thursday, October 30, 2025 6:35 PM<br>
<b>To:</b> Pavel Rappo <pavel.rappo@gmail.com>; compiler-dev@openjdk.org <compiler-dev@openjdk.org><br>
<b>Subject:</b> Re: Print suppressed exceptions in JShell</font>
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I think it is probably just an oversight. This seems to be printed by JShellTool::displayEvalException, which shouldn't be too hard to add printing for suppressed exceptions.</div>
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-Chen</div>
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Confidential – Oracle Internal</div>
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<div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> compiler-dev <compiler-dev-retn@openjdk.org> on behalf of Pavel Rappo <pavel.rappo@gmail.com><br>
<b>Sent:</b> Thursday, October 30, 2025 5:06 PM<br>
<b>To:</b> compiler-dev@openjdk.org <compiler-dev@openjdk.org><br>
<b>Subject:</b> Print suppressed exceptions in JShell</font>
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<div class="x_PlainText">Is there any reason why JShell does not print out suppressed<br>
exceptions? I think it would be good to print them.<br>
<br>
jshell> new Throwable()<br>
$1 ==> java.lang.Throwable<br>
<br>
jshell> new Error()<br>
$2 ==> java.lang.Error<br>
<br>
jshell> $1.addSuppressed($2)<br>
<br>
jshell> throw $1<br>
| Exception java.lang.Throwable<br>
| at (#1:1)<br>
<br>
-Pavel<br>
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