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x/tools/gopls: empty uri in publishDiagnostics from autogenerated.json #81025

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x/tools/gopls: empty uri in publishDiagnostics from autogenerated.json#81025
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ToolsThis label describes issues relating to any tools in the x/tools repository.goplsIssues related to the Go language server, gopls.
Milestone
gopls/v0.24.0

Description

@seankhliao
seankhliao
opened on Aug 22, 2026

gopls version

gopls -v version
Build info

golang.org/x/tools/gopls (devel)
golang.org/x/tools/gopls@(devel)
github.com/BurntSushi/toml@v1.6.0 h1:dRaEfpa2VI55EwlIW72hMRHdWouJeRF7TPYhI+AUQjk=
github.com/fatih/camelcase@v1.0.0 h1:hxNvNX/xYBp0ovncs8WyWZrOrpBNub/JfaMvbURyft8=
github.com/fatih/gomodifytags@v1.17.1-0.20250423142747-f3939df9aa3c h1:dDSgAjoOMp8da3egfz0t2S+t8RGOpEmEXZubcGuc0Bg=
github.com/fatih/structtag@v1.2.0 h1:/OdNE99OxoI/PqaW/SuSK9uxxT3f/tcSZgon/ssNSx4=
github.com/fsnotify/fsnotify@v1.9.0 h1:2Ml+OJNzbYCTzsxtv8vKSFD9PbJjmhYF14k/jKC7S9k=
github.com/google/jsonschema-go@v0.4.3 h1:/DBOLZTfDow7pe2GmaJNhltueGTtDKICi8V8p+DQPd0=
github.com/modelcontextprotocol/go-sdk@v1.6.1 h1:0zOSupjKUxPKSocPT1Wtago+mUHU2/uZ4xSOY0FGReU=
github.com/segmentio/asm@v1.2.1 h1:DTNbBqs57ioxAD4PrArqftgypG4/qNpXoJx8TVXxPR0=
github.com/segmentio/encoding@v0.5.4 h1:OW1VRern8Nw6ITAtwSZ7Idrl3MXCFwXHPgqESYfvNt0=
github.com/yosida95/uritemplate/v3@v3.0.2 h1:Ed3Oyj9yrmi9087+NczuL5BwkIc4wvTb5zIM+UJPGz4=
golang.org/x/exp/typeparams@v0.0.0-20260812173653-3d80eb74bc5b h1:F5AefKrjGj4r4Ht9ov1buP2PTyVb65dyf4bmdVKleV0=
golang.org/x/mod@v0.39.0 h1:UF5zwQdCRRUpHfyPwr7d4UrGiVeldIsogtzWVnczL74=
golang.org/x/oauth2@v0.36.0 h1:peZ/1z27fi9hUOFCAZaHyrpWG5lwe0RJEEEeH0ThlIs=
golang.org/x/sync@v0.22.0 h1:SZjpbeLmrCk4xhRSZFNZW5gFUeCeFgjekvI/+gfScek=
golang.org/x/sys@v0.47.0 h1:o7XGOvZQCADBQQ4Y7VNq2dRWQR7JmOUW8Kxx4ZsNgWs=
golang.org/x/telemetry@v0.0.0-20260811182544-a038080d80e5 h1:ZUSxONxc981v7AW7QUg+I9WwZzSTTJ019ENBYr5pV/Q=
golang.org/x/text@v0.41.0 h1:vz/seA0lnX87Othu2f/0L24RcgrXD9/YFTSuGjj3rH8=
golang.org/x/tools@v0.48.0 => ..
golang.org/x/vuln@v1.6.0 h1:FeMO9Rm/HwyduOztbvKcOw+zvDEPr4I4aQNSfevFcKY=
honnef.co/go/tools@v0.8.0-rc.1 h1:wqMm2kjcEXMOr+6yau+pdKqJKe6l2N1aKPkpini+Kzk=
mvdan.cc/gofumpt@v0.10.0 h1:yGGpRS2pBN2OQIi7b21IXknJna7faPkFaVfHLrN6Euo=
mvdan.cc/xurls/v2@v2.6.0 h1:3NTZpeTxYVWNSokW3MKeyVkz/j7uYXYiMtXRUfmjbgI=
go: go1.28-devel_7237c87c8c 2026-08-21 18:56:19 -0700

go env

AR='ar'
CC='gcc'
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_ENABLED='0'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
CXX='g++'
GCCGO='gccgo'
GO111MODULE=''
GOAMD64='v3'
GOARCH='amd64'
GOAUTH='netrc'
GOBIN='/home/user/.data/go/bin'
GOCACHE='/home/user/.cache/go-build'
GOCACHEPROG=''
GODEBUG=''
GOENV='/home/user/.config/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFIPS140='off'
GOFLAGS='-trimpath "-ldflags=-s -w" -vet=all'
GOGCCFLAGS='-fPIC -m64 -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build107581354=/tmp/go-build -gno-record-gcc-switches'
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
GOMOD='/home/user/sdk/go/src/go.mod'
GOMODCACHE='/home/user/.data/go/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='linux'
GOPACKAGESDRIVER=''
GOPATH='/home/user/.data/go'
GOPRIVATE=''
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/home/user/sdk/go'
GOSUMDB='sum.golang.org'
GOTELEMETRY='on'
GOTELEMETRYDIR='/home/user/.config/go/telemetry'
GOTMPDIR=''
GOTOOLCHAIN='path'
GOTOOLDIR='/home/user/sdk/go/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='go1.28-devel_7237c87c8c 2026-08-21 18:56:19 -0700'
GOWORK=''
PKG_CONFIG='pkg-config'

What did you do?

toggle compiler opts in neovim

What did you see happen?

vim.schedule callback: /usr/share/nvim/runtime/lua/vim/uri.lua:104: URI must contain a scheme:
stack traceback:
        [C]: in function 'error'
        /usr/share/nvim/runtime/lua/vim/uri.lua:104: in function 'uri_to_fname'
        /usr/share/nvim/runtime/lua/vim/lsp/diagnostic.lua:238: in function 'handle_diagnostics'
        /usr/share/nvim/runtime/lua/vim/lsp/diagnostic.lua:266: in function 'handler'
        /usr/share/nvim/runtime/lua/vim/lsp/client.lua:1323: in function '_notification'
        /usr/share/nvim/runtime/lua/vim/lsp/client.lua:470: in function 'fn'
        [string "vim/_core/editor"]:273: in function <[string "vim/_core/editor"]:272>

What did you expect to see?

No warning

Editor and settings

No response

Logs

Following up on #80496 , with CL 806961 landed I can see compiler optimizations now, but toggling the options still has the warning.

With some printf debugging in gopls #80496 (comment)
I think it's publishing an empty diagnostic for <autogenerated>.json which neovim doesn't like log.Println("YYY debug", fn, fh.URI(), fh):

compileropt.go:87: YYY debug /tmp/gopls-291274.details3417649164/archive%2Ftar/%3Cautogenerated%3E.json  
compileropt.go:87: YYY debug /tmp/gopls-291274.details3417649164/archive%2Ftar/common.json file:///home/user/sdk/go/src/archive/tar/common.go /home/user/sdk/go/src/archive/tar/common.go

Activity

  1. seankhliao
    added
    goplsIssues related to the Go language server, gopls.
    ToolsThis label describes issues relating to any tools in the x/tools repository.
    on Aug 22, 2026
  2. gopherbot
    added this to the Unreleased milestone on Aug 22, 2026

  3. gabyhelp commented on Aug 22, 2026

    @gabyhelp
    gabyhelp
    on Aug 22, 2026

    Related Issues

    (Emoji vote if this was helpful or unhelpful; more detailed feedback welcome in this discussion.)

  4. adonovan
    modified the milestones: Unreleased, gopls/v0.24.0 on Aug 23, 2026

  5. adonovan commented on Aug 24, 2026

    @adonovan
    adonovan
    on Aug 24, 2026
    Member

    Perhaps the fix is as simple as changing the continue in parseDetailsFile to a break, so that it actually skips the whole file in that case?

    	for dec := json.NewDecoder(bytes.NewReader(buf)); dec.More(); {
		// The first element always contains metadata.
		if i == 0 {
			i++
			m := new(metadata)
			if err := dec.Decode(m); err != nil {
				return "", nil, err
			}
			if !strings.HasSuffix(m.File, ".go") {
				break // <autogenerated>                    <- here
			}
			uri = protocol.URIFromPath(m.File)
			continue
		}
		...

    It would be nice to also check that we got a uri before returning success.

  6. gopherbot commented on Sep 3, 2026

    @gopherbot
    gopherbot
    on Sep 3, 2026
    Contributor

    Change https://go.dev/cl/826984 mentions this issue: gopls/internal/golang: skip autogenerated compiler details

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