golang/go

x/debug: viewcore can't type some stack variables

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#73,035 建立於 2025年3月25日

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 (1 留言) (0 反應) (2 負責人)Go (133,883 star) (19,008 fork)batch import
FeatureRequestNeedsInvestigationcompiler/runtimehelp wanted

描述

Some stack variables in viewcore and gocore are ignored because gocore doesn't handle them properly. I don't fully understand this yet, but @thanm made us aware of this issue and helpfully left a comment in the code:

"Instead what the code above should be doing is caching any abstract variables it encounters in a map (indexed by DWARF offset), then when it encounters a concrete var, pick the name and type up from the abstract variable."

Than also linked to a design doc for this with examples: https://github.com/golang/proposal/blob/master/design/22080-dwarf-inlining.md#how-the-generated-dwarf-should-look.

貢獻者指南

技術棧
go
領域
tooling
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。
over 1 week
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。
blocked
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
DWARF debug informationGo runtime debuggingcore dump analysisgocore/viewcore
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
The issue is in the x/debug package, specifically in gocore/viewcore. The comment suggests caching abstract variables indexed by DWARF offset. Investigate the design proposal at https://github.com/golang/proposal/blob/master/design/22080 dwarf inlining.md for examples. Look at the code around the comment left by @thanm. The abstract variable handling needs to be implemented; the concrete variable should pick name and type from cached abstract variable.