microsoft/Terminal

[cont] [DefTerm] Some invocations can cause deadlocks in terminal + another GUI application in Attach mode

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#19,749 建立於 2026年1月15日

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Area-DefAppHelp WantedIssue-BugPriority-2Product-Terminal

描述

Windows Terminal version

No response

Windows build number

No response

Other Software

No response

Steps to reproduce

Same steps as https://github.com/microsoft/terminal/issues/14131 More here: https://github.com/microsoft/terminal/issues/14131#issuecomment-3731555688

Expected Behavior

no 5000ms timeout from SendMessageTimeoutW: SMTO_NOTIMEOUTIFNOTHUNG

Actual Behavior

5000ms because the window is newly hung (by call to system())

貢獻者指南

技術棧
cpp
領域
desktop
議題類型
bug
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
4
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
3-5 days
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
active
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
mostly clear
前置要求
Windows API knowledgeTerminal codebaseC++ experienceDebugging skills
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
20
研究方向
Investigate the deadlock described in issue #19749, which is related to #14131. Focus on the use of SendMessageTimeoutW and the call to system() that causes the window to hang. Examine the DefTerm handling code and how attach mode interacts with other GUI applications. Review the linked comment (#14131#issuecomment 3731555688) for additional context and potential reproduction steps.
[cont] [DefTerm] Some invocations can cause deadlocks in terminal + another GUI application in Attach mode · microsoft/Terminal#19749 | Good First Issue