[go] internal/poll: check for connection closing during I/O in Plan 9

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Gopher Robot (Gerrit)

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Aug 10, 2026, 6:19:44 PM (12 hours ago) Aug 10

to Richard Miller, goph...@pubsubhelper.golang.org, golang-...@googlegroups.com, Damien Neil, Dmitri Shuralyov, Dmitri Shuralyov, golang...@luci-project-accounts.iam.gserviceaccount.com, David du Colombier, Ian Lance Taylor, Michael Pratt, golang-co...@googlegroups.com

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Change information

Commit message:

internal/poll: check for connection closing during I/O in Plan 9

CL 781845 was an attempt to make Plan 9 behaviour match other
platforms when a net connection is closed while Read/Write is
outstanding. That didn't work in some circumstances, returning
"file already closed" instead of "use of closed network connection".

This change reverts CL 781845 and makes the check in internal/poll
instead of in the net package.

Fixes #79623

Change-Id: If6b7fc45b965df1b3b8b79bf2892c8413633cf23

Reviewed-on: https://go-review.googlesource.com/c/go/+/808000

LUCI-TryBot-Result: golang...@luci-project-accounts.iam.gserviceaccount.com <golang...@luci-project-accounts.iam.gserviceaccount.com>

Reviewed-by: Damien Neil <dn...@google.com>

Auto-Submit: Damien Neil <dn...@google.com>

Reviewed-by: David du Colombier <0in...@gmail.com>

Reviewed-by: Dmitri Shuralyov <dmit...@google.com>

Files:

M src/internal/poll/fd_plan9.go
M src/net/fd_plan9.go

Change size: S

Delta: 2 files changed, 6 insertions(+), 10 deletions(-)

Branch: refs/heads/master

Submit Requirements:

Code-Review: +2 by David du Colombier, +1 by Damien Neil, +1 by Dmitri Shuralyov
TryBots-Pass: LUCI-TryBot-Result+1 by golang...@luci-project-accounts.iam.gserviceaccount.com

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