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Unable to start program if org.eclipse.debug.terminal is in the target platform

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还没有人认领这个 Issue。

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Issue 类型
缺陷
描述清晰度
基本清楚
活跃度
停滞
技术栈
java
领域
devtools

调研方向

在 Windows 11 上通过导入 org.eclipse.debug.terminal，并从启动配置中启动 Java 和批处理文件示例来重现。先从 debug/org.eclipse.debug.terminal/src/org/eclipse/debug/terminal/PtyExecFactory.java 第 33-35 行附近开始，然后检查 Allocate console、Allocate terminal 和 Disable Input/Output 选项的处理方式。完成的标准是：所选的启动选项控制 PTY 的创建，并且程序能够在调试器和控制台输出正常工作的情况下启动。

由索引模型根据 Issue 内容生成。

描述

bug

Latest master, on Windows 11.

  1. Import org.eclipse.debug.terminal into the workspace
  2. Start Eclipse from Eclipse
  3. Try to debug any trivial Java program like
import javax.swing.JOptionPane;
public class SomeClass {
	public static void main(String[] args) throws Exception {
		JOptionPane.showMessageDialog(null, "Hello, World!");
		while (true) {
			System.err.println(".");
			Thread.sleep(5000);
		}
	}
}

Error will be reported, nothing will be started.
Sometimes Console is opened & some process is shown in debugger but Console doesn't show any output, and debugger doesn't connect.

eclipse.buildId=4.39.0.I20260116-1800
java.version=25.0.1
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=de_DE
Framework arguments:  -product org.eclipse.sdk.ide
Command-line arguments:  -product org.eclipse.sdk.ide -data C:\eclipse\workspaces\platform/../runtime-Java25 -dev file:///C:/eclipse/workspaces/platform/.metadata/.plugins/org.eclipse.pde.core/Java25/dev.properties -os win32 -ws win32 -arch x86_64 -consoleLog

org.eclipse.jdt.launching
Error
Sun Jan 18 17:41:17 CET 2026
Cannot connect to VM

java.net.SocketException: Socket closed
	at java.base/sun.nio.ch.NioSocketImpl.endAccept(NioSocketImpl.java:685)
	at java.base/sun.nio.ch.NioSocketImpl.accept(NioSocketImpl.java:758)
	at java.base/java.net.ServerSocket.implAccept(ServerSocket.java:593)
	at java.base/java.net.ServerSocket.platformImplAccept(ServerSocket.java:560)
	at java.base/java.net.ServerSocket.implAccept(ServerSocket.java:536)
	at java.base/java.net.ServerSocket.implAccept(ServerSocket.java:482)
	at java.base/java.net.ServerSocket.accept(ServerSocket.java:441)
	at org.eclipse.jdi.internal.connect.SocketTransportService.accept(SocketTransportService.java:91)
	at org.eclipse.jdi.internal.connect.SocketTransportImpl.accept(SocketTransportImpl.java:63)
	at org.eclipse.jdi.internal.connect.SocketListeningConnectorImpl.accept(SocketListeningConnectorImpl.java:167)
	at org.eclipse.jdt.internal.launching.StandardVMDebugger$ConnectRunnable.run(StandardVMDebugger.java:113)
	at java.base/java.lang.Thread.run(Thread.java:1474)
Image
  1. Close org.eclipse.debug.terminal project, restart Eclipse and run same config - everything works.
  2. Similar happens with the batch file executed as "external program"
@echo off
echo Hello World
pause

The change is related to 67a55ce2b78b152414967bfe3b5007cca5b064c7 / https://github.com/eclipse-platform/eclipse.platform/pull/1763.

What I miss is any reasonable possibility to disable this behavior from the launch configuration.

There is a new options group "Allocate console | Allocate terminal | Disable Input/Output" added in the launch config that probably is supposed to control this behavior, but it simply doesn't make any difference which option I select, nothing changes.

Image

Only way I found to "fix" the problem is to disable output merging which results in this code below executed that prevents PTY to be created:

https://github.com/eclipse-platform/eclipse.platform/blob/master/debug/org.eclipse.debug.terminal/src/org/eclipse/debug/terminal/PtyExecFactory.java#L33-L35

But this is surely not "right" way to deal with that problem.

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