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x/tools/cmd/gorename: rename failure sometimes wipes files clean #31434

markvincentcaro opened this issue Apr 12, 2019 · 2 comments

x/tools/cmd/gorename: rename failure sometimes wipes files clean #31434

markvincentcaro opened this issue Apr 12, 2019 · 2 comments
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@markvincentcaro markvincentcaro commented Apr 12, 2019

What version of Go are you using (go version)?

go version go1.12.2 windows/amd64

Does this issue reproduce with the latest release?


What operating system and processor architecture are you using (go env)?

go env Output
set GOARCH=amd64
set GOBIN=
set GOCACHE=C:\Users\My Username\AppData\Local\go-build
set GOEXE=.exe
set GOHOSTARCH=amd64
set GOHOSTOS=windows
set GOOS=windows
set GOPATH=E:\GoCodes
set GOROOT=C:\Go
set GOTOOLDIR=C:\Go\pkg\tool\windows_amd64
set GCCGO=gccgo
set CC=gcc
set CXX=g++
set GOMOD=
set CGO_CFLAGS=-g -O2
set CGO_FFLAGS=-g -O2
set CGO_LDFLAGS=-g -O2
set PKG_CONFIG=pkg-config
set GOGCCFLAGS=-m64 -mthreads -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=C:\Users\MY USE~1\AppData\Local\Temp\go-build389077826=/tmp/go-build -gno-record-gcc-switches

What did you do?

Inside VS Code, I tried to perform a simple rename which failed for unknown reasons. I know the rename was legal because I was able to do it successfully via Find and Replace (not my preferred method of renaming something). Restoring everything and retrying the rename also works.

The intermittent error is as follows:

E:\GoCodes\src\myproject\mypackage>Finished running tool: C:\Go\bin\go.exe build -i -o C:\Users\MY USE~1\AppData\Local\Temp\vscode-goKh79E5\go-code-check myproject\mypackage

E:\GoCodes\src\myproject\mypackage>Finished running tool: E:\GoCodes\bin\golangci-lint.exe run --fast --print-issued-lines=false

E:\GoCodes\src\myproject\mypackage>Finished running tool: C:\Go\bin\go.exe vet ./...

Rename failed

Sometimes it shows the below error:

E:\GoCodes\src\myproject\mypackage>Finished running tool: C:\Go\bin\go.exe test -c -i -o C:\Users\MY USE~1\AppData\Local\Temp\vscode-goKh79E5\go-code-check myproject\mypackage

The rename failure resulted in one of the affected files getting its contents wiped clean (the file is now blank).

This issue is highly intermittent and has only happened to me twice so far (although gorename failing for unknown reasons without wiping files is more frequent).

I have no idea why gorename has the potential to completely wipe a file's contents when it can simply leave the file unchanged upon failure.

This issue is very infuriating and can set back developers hours in case their most recent changes were not saved somewhere.

What did you expect to see?

I expected one of two things:

  1. The rename should have succeeded because it was perfectly legal.

  2. In case the rename fails, no file should have its contents wiped clean.

What did you see instead?

One of the files affected by the rename had its contents wiped clean upon rename failure.

@gopherbot gopherbot added this to the Unreleased milestone Apr 12, 2019
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@bcmills bcmills commented Apr 12, 2019

CC @ianthehat

@bcmills bcmills added the NeedsInvestigation label Apr 12, 2019
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@gopherbot gopherbot commented Apr 16, 2019

Change mentions this issue: cmd/gopherbot: CC triaged issues to owners

@gopherbot gopherbot added the Tools label Sep 12, 2019
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