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cmd/go: panic: LoadImport called with empty package path when listing GOROOT/test/*.go #60230

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bcmills opened this issue May 16, 2023 · 11 comments
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cmd/go: panic: LoadImport called with empty package path when listing GOROOT/test/*.go #60230

bcmills opened this issue May 16, 2023 · 11 comments
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@matloob
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GoCommand cmd/go NeedsFix The path to resolution is known, but the work has not been done.
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Go1.21

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@bcmills
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bcmills commented May 16, 2023

What did you do?

~$ gotip version
go version devel go1.21-5534f044 Tue May 16 16:01:08 2023 +0000 linux/amd64

~$ cd $(gotip env GOROOT)/test

~/sdk/gotip/test$ gotip list *.go
panic: LoadImport called with empty package path

goroutine 1 [running]:
cmd/go/internal/load.loadImport({0xb57718, 0xee60e0}, {0x0, 0x0, 0x0, 0x1, 0x0, 0x0}, 0x0, {0xc00051f5ee, ...}, ...)
        /usr/local/google/home/bcmills/sdk/gotip/src/cmd/go/internal/load/pkg.go:727 +0x124a
cmd/go/internal/load.LoadImport(...)
        /usr/local/google/home/bcmills/sdk/gotip/src/cmd/go/internal/load/pkg.go:710
cmd/go/internal/load.(*Package).load(0xc0001bcc00, {0xb57718, 0xee60e0}, {0x0, 0x0, 0x0, 0x1, 0x0, 0x0}, {0xa59638, ...}, ...)
        /usr/local/google/home/bcmills/sdk/gotip/src/cmd/go/internal/load/pkg.go:2004 +0x1a49
cmd/go/internal/load.GoFilesPackage({0xb57718, 0xee60e0}, {0x0, 0x0, 0x0, 0x1, 0x0, 0x0}, {0xc000134020, 0x145, ...})
        /usr/local/google/home/bcmills/sdk/gotip/src/cmd/go/internal/load/pkg.go:3181 +0x827
cmd/go/internal/load.PackagesAndErrors({0xb57718?, 0xee60e0?}, {0x0, 0x0, 0x0, 0x1, 0x0, 0x0}, {0xc000134020, 0x145, ...})
        /usr/local/google/home/bcmills/sdk/gotip/src/cmd/go/internal/load/pkg.go:2826 +0x253
cmd/go/internal/list.runList({0xb57718?, 0xee60e0}, 0xeaad60?, {0xc000134020?, 0x145, 0x14e})
        /usr/local/google/home/bcmills/sdk/gotip/src/cmd/go/internal/list/list.go:612 +0xcf0
main.invoke(0xeaad60, {0xc000134010, 0x146, 0x14f})
        /usr/local/google/home/bcmills/sdk/gotip/src/cmd/go/main.go:243 +0x4d6
main.main()
        /usr/local/google/home/bcmills/sdk/gotip/src/cmd/go/main.go:183 +0x7cf

What did you expect to see?

An error message explaining why I can't load all of the .go files in GOROOT/test as a single package.

What did you see instead?

Panic!
@bcmills bcmills added NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. GoCommand cmd/go labels May 16, 2023
@bcmills bcmills added this to the Backlog milestone May 16, 2023
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bcmills commented May 16, 2023

(CC @matloob)

@bcmills
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bcmills commented Jun 8, 2023

This reproduces with go1.20.5 but not go1.19.10. Seems like it was probably a regression in Go 1.20.

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bcmills commented Jun 8, 2023

(Possibly related to #59905.)

@d-enk
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d-enk commented Jun 8, 2023

#60686

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Change https://go.dev/cl/502615 mentions this issue: go/build: check for invalid import paths again

@matloob matloob self-assigned this Jun 12, 2023
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matloob commented Jun 12, 2023

@gopherbot, please backport to 1.20. The change in go/parser behavior between Go 1.19 and Go 1.20 caused a regression in 1.20.

@gopherbot gopherbot mentioned this issue Jun 12, 2023
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Backport issue(s) opened: #60753 (for 1.19), #60754 (for 1.20).

Remember to create the cherry-pick CL(s) as soon as the patch is submitted to master, according to https://go.dev/wiki/MinorReleases.

@gopherbot gopherbot mentioned this issue Jun 12, 2023
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Change https://go.dev/cl/502697 mentions this issue: go/build: check for invalid import paths again

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Change https://go.dev/cl/502697 mentions this issue: [release-branch.go1.20] go/build: check for invalid import paths again

gopherbot pushed a commit that referenced this issue Jun 13, 2023
@matloob @prattmic
[release-branch.go1.20] go/build: check for invalid import paths again
f5172dc 
The go parser previously checked for invalid import paths, go/build,
seeing the parse error would put files with invalid import paths into
InvalidGoFiles. golang.org/cl/424855 removed that check from the
parser, which meant files with invalid import paths not have any parse
errors on them and not be put into InvalidGoFiles. Do a check for
invalid import paths in go/build soon after parsing so we can make
sure files with invalid import paths go into InvalidGoFiles.

This fixes an issue where the Go command assumed that if a file wasn't
invalid it had non empty import paths, leading to a panic.

Fixes #60754
Updates #60230
Updates #60686

Change-Id: I33c1dc9304649536834939cef7c689940236ee20
Reviewed-on: https://go-review.googlesource.com/c/go/+/502615
Reviewed-by: Bryan Mills <[email protected]>
TryBot-Result: Gopher Robot <[email protected]>
Reviewed-by: Michael Matloob <[email protected]>
Run-TryBot: Michael Matloob <[email protected]>
(cherry picked from commit 962753b)
Reviewed-on: https://go-review.googlesource.com/c/go/+/502697
@dmitshur dmitshur added NeedsFix The path to resolution is known, but the work has not been done. and removed NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. labels Jun 20, 2023
@dmitshur dmitshur modified the milestones: Backlog, Go1.21 Jun 20, 2023
@Chrisys93
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Is this addressed in GO 1.22.3? Thank you!

@matloob
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matloob commented May 13, 2024 •
edited
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Yes, are you running into it?

@MikeMitchellWebDev MikeMitchellWebDev mentioned this issue Jun 13, 2024
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@dmitshur @bcmills @gopherbot @matloob @Chrisys93 @d-enk