golang/go

x/build: set up builders simulating old processors

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#17,478 opened on Oct 17, 2016

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Description

We occasionally get a bug report from users that some assembly code (often in runtime or crypto or compression) causes a SIGILL.

We should run builders (perhaps in qemu?) simulating older processors so we can exercise all the assembly fallback paths and CPU detection code.

Contributor guide

Research direction
Investigate how to set up QEMU emulation for older CPUs in the Go build infrastructure and identify which assembly fallback paths need testing.
Tech stack
go
Domain
devopsci cd
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
GoassemblyQEMU
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30