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cmd/go: panic: internal error: can't find reason for requirement #56662

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rsc opened this issue Nov 8, 2022 · 3 comments
Closed

cmd/go: panic: internal error: can't find reason for requirement #56662

rsc opened this issue Nov 8, 2022 · 3 comments
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@bcmills
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FrozenDueToAge GoCommand cmd/go modules NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.
Milestone
Go1.21

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@rsc
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rsc commented Nov 8, 2022

Reproduction case for an internal error panic in cmd/go.

% cd golang.org/x/build
% git change 432398/2
git-codereview: changed to CL 432398/2.
	internal/diff: copy from main repo
% git checkout 'HEAD^' go.mod go.sum
Updated 2 paths from 9c7ed77c
% go get golang.org/x/tools
panic: internal error: can't find reason for requirement on golang.org/x/[email protected]

goroutine 1 [running]:
cmd/go/internal/modget.(*resolver).updateBuildList.func1({{0xc00063f188, 0x11}, {0xc000028f30, 0x22}})
	/Users/rsc/go/src/cmd/go/internal/modget/get.go:1760 +0xd4
cmd/go/internal/modget.(*resolver).updateBuildList(0xc000138000, {0x172fb70, 0xc00002a158}, {0x0, 0x0, 0x0})
	/Users/rsc/go/src/cmd/go/internal/modget/get.go:1765 +0x54c
cmd/go/internal/modget.(*resolver).resolveQueries(0xc000138000, {0x172fb70, 0xc00002a158}, {0xc000014058, 0x1, 0xc0000b5d78?})
	/Users/rsc/go/src/cmd/go/internal/modget/get.go:1243 +0x1a5
cmd/go/internal/modget.runGet({0x172fb70, 0xc00002a158}, 0xc00002c528?, {0xc0000241d0, 0x1, 0x1})
	/Users/rsc/go/src/cmd/go/internal/modget/get.go:314 +0x408
main.invoke(0x1a3e2e0, {0xc0000241c0, 0x2, 0x2})
	/Users/rsc/go/src/cmd/go/main.go:225 +0x3d9
main.main()
	/Users/rsc/go/src/cmd/go/main.go:179 +0x7ce
%

/cc @bcmills
@rsc rsc added NeedsFix The path to resolution is known, but the work has not been done. release-blocker labels Nov 8, 2022
@rsc rsc added this to the Go1.20 milestone Nov 8, 2022
@bcmills bcmills self-assigned this Nov 9, 2022
@bcmills bcmills added GoCommand cmd/go modules NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. labels Nov 9, 2022
@bcmills
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bcmills commented Nov 9, 2022

This is likely a duplicate of #56494, but assigning to myself to verify that the fix for that also addresses this reproducer.

@gopherbot gopherbot removed the NeedsFix The path to resolution is known, but the work has not been done. label Nov 9, 2022
@bcmills bcmills modified the milestones: Go1.20, Go1.21 Dec 12, 2022
@kokizzu
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kokizzu commented Apr 24, 2023 •
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Hmm.. got same issue when doing this:

go get -u -v github.com/kokizzu/[email protected]

go: downloading github.com/kokizzu/gotro v1.2824.2048
panic: internal error: can't find reason for requirement on github.com/jackc/[email protected]

goroutine 1 [running]:
cmd/go/internal/modget.(*resolver).updateBuildList.func1({{0xc000a5a300, 0x17}, {0xc000034f60, 0x6}})
        /usr/lib/go-1.20/src/cmd/go/internal/modget/get.go:1760 +0xd4
cmd/go/internal/modget.(*resolver).updateBuildList(0xc0007fa000, {0xb447f8, 0xc0000340d8}, {0xc000ad9000, 0x4c, 0x80})
        /usr/lib/go-1.20/src/cmd/go/internal/modget/get.go:1765 +0x54c
cmd/go/internal/modget.(*resolver).applyUpgrades(0xc0007fa000, {0xb447f8, 0xc0000340d8}, {0xc000447000?, 0x4c, 0xc0000e1d70?})
        /usr/lib/go-1.20/src/cmd/go/internal/modget/get.go:1312 +0x465
cmd/go/internal/modget.runGet({0xb447f8, 0xc0000340d8}, 0xc000030840?, {0xc0000240e0, 0x1, 0x1})
        /usr/lib/go-1.20/src/cmd/go/internal/modget/get.go:351 +0x458
main.invoke(0xe5c320, {0xc0000240b0, 0x4, 0x4})
        /usr/lib/go-1.20/src/cmd/go/main.go:225 +0x3d9
main.main()
        /usr/lib/go-1.20/src/cmd/go/main.go:179 +0x7ce

after removing jackc/puddle // indirect from go.mod it works fine now.

@bcmills
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bcmills commented Apr 24, 2023

Duplicate of #56494

@bcmills bcmills marked this as a duplicate of #56494 Apr 24, 2023
@bcmills bcmills closed this as not planned Won't fix, can't repro, duplicate, stale Apr 24, 2023
@golang golang locked and limited conversation to collaborators Jun 6, 2024
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FrozenDueToAge GoCommand cmd/go modules NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.
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Go1.21
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@rsc @kokizzu @mknyszek @bcmills @gopherbot