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x/tools/cmd/guru: "panic: internal error in pointer analysis: not a tagged object" #27235

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pennz opened this issue Aug 26, 2018 · 1 comment
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@pennz
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@pennz pennz commented Aug 26, 2018

Please answer these questions before submitting your issue. Thanks!

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

go version go1.10.1 darwin/amd64 and go version go1.11 darwin/amd64

Does this issue reproduce with the latest release?

Yes. It can be reproduced with the guru right after I upgraded to go 1.11 and ran go get -v -u golang.org/x/tools/...

System details

go version go1.11 darwin/amd64
GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/vincent/Library/Caches/go-build"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOOS="darwin"
GOPATH="/Users/vincent/works/go"
GOPROXY=""
GORACE=""
GOROOT="/usr/local/go"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/darwin_amd64"
GCCGO="gccgo"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD=""
GOROOT/bin/go version: go version go1.11 darwin/amd64
GOROOT/bin/go tool compile -V: compile version go1.11
uname -v: Darwin Kernel Version 17.4.0: Sun Dec 17 09:19:54 PST 2017; root:xnu-4570.41.2~1/RELEASE_X86_64
ProductName:	Mac OS X
ProductVersion:	10.13.3
BuildVersion:	17D102
lldb --version: lldb-902.0.79.7
  Swift-4.1

What did you do?

go get -u v2ray.com/core/...
go get -u v2ray.com/ext/...
go install v2ray.com/ext/tools/build/vbuild # to generate the script for building the binary
$GOPATH/bin/vbuild #build, and building will pass

guru -scope v2ray.com/core callers $GOPATH/src/v2ray.com/core/proxy/vmess/inbound/inbound.go:#5662

The commit id for the code of v2ray.com/core is d828aa2fbaeb4c605fb9ee3dac73e8058b53e060.
v2ray.com/core/proxy/vmess/inbound/inbound.go:#5662 is the function name in Line 221 of https://play.golang.org/p/h-6fxISgsHt .

What did you expect to see?

Show the callers of the function Process in the code.

What did you see instead?

in go1.11 darwin/amd64

Internal panic in pointer analysis:
goroutine 1 [running]:
runtime/debug.Stack(0x24, 0x0, 0x0)
	/usr/local/go/src/runtime/debug/stack.go:24 +0xa7
runtime/debug.PrintStack()
	/usr/local/go/src/runtime/debug/stack.go:16 +0x22
golang.org/x/tools/go/pointer.Analyze.func1(0xc05c19fcc8)
	/Users/vincent/works/go/src/golang.org/x/tools/go/pointer/analysis.go:227 +0x10b
panic(0x13027a0, 0xc01b82e060)
	/usr/local/go/src/runtime/panic.go:513 +0x1b9
golang.org/x/tools/go/pointer.(*analysis).taggedValue(0xc004d168c0, 0xc00001f80d, 0x1, 0x64, 0xc0151a8700)
	/Users/vincent/works/go/src/golang.org/x/tools/go/pointer/gen.go:272 +0x12a
golang.org/x/tools/go/pointer.(*typeFilterConstraint).solve(0xc01ab61680, 0xc004d168c0, 0xc02568d700)
	/Users/vincent/works/go/src/golang.org/x/tools/go/pointer/solve.go:273 +0xae
golang.org/x/tools/go/pointer.(*analysis).solveConstraints(0xc004d168c0, 0xc03176b5f0, 0xc02568d700)
	/Users/vincent/works/go/src/golang.org/x/tools/go/pointer/solve.go:165 +0x170
golang.org/x/tools/go/pointer.(*analysis).solve(0xc004d168c0)
	/Users/vincent/works/go/src/golang.org/x/tools/go/pointer/solve.go:59 +0x2e0
golang.org/x/tools/go/pointer.Analyze(0xc019fba780, 0x0, 0x1407b40, 0xc01b82e080)
	/Users/vincent/works/go/src/golang.org/x/tools/go/pointer/analysis.go:331 +0x4ce
main.ptrAnalysis(0xc019fba780, 0xc00c558390)
	/Users/vincent/works/go/src/golang.org/x/tools/cmd/guru/guru.go:316 +0x2b
main.callers(0xc0001100f0, 0x7, 0x137de3c)
	/Users/vincent/works/go/src/golang.org/x/tools/cmd/guru/callers.go:72 +0x51d
main.Run(0x7ffeefbff8d3, 0x7, 0xc0001100f0, 0x1, 0xc0000f4200)
	/Users/vincent/works/go/src/golang.org/x/tools/cmd/guru/guru.go:88 +0x2b7
main.main()
	/Users/vincent/works/go/src/golang.org/x/tools/cmd/guru/main.go:222 +0x38f
panic: internal error in pointer analysis: not a tagged object: n129037 (please report this bug)

goroutine 1 [running]:
main.ptrAnalysis(0xc019fba780, 0xc00c558390)
	/Users/vincent/works/go/src/golang.org/x/tools/cmd/guru/guru.go:318 +0x65
main.callers(0xc0001100f0, 0x7, 0x137de3c)
	/Users/vincent/works/go/src/golang.org/x/tools/cmd/guru/callers.go:72 +0x51d
main.Run(0x7ffeefbff8d3, 0x7, 0xc0001100f0, 0x1, 0xc0000f4200)
	/Users/vincent/works/go/src/golang.org/x/tools/cmd/guru/guru.go:88 +0x2b7
main.main()
	/Users/vincent/works/go/src/golang.org/x/tools/cmd/guru/main.go:222 +0x38f
FAIL: 2

in go1.10.1 darwin/amd64

$ guru -scope v2ray.com/core callers ~/works/go/src/v2ray.com/core/proxy/vmess/inbound/inbound.go:#5662                                                          [19:50:38]
Internal panic in pointer analysis:
goroutine 1 [running]:
runtime/debug.Stack(0x24, 0x0, 0x0)
	/usr/local/go/src/runtime/debug/stack.go:24 +0xa7
runtime/debug.PrintStack()
	/usr/local/go/src/runtime/debug/stack.go:16 +0x22
golang.org/x/tools/go/pointer.Analyze.func1(0xc45740bc18)
	/Users/vincent/works/go/src/golang.org/x/tools/go/pointer/analysis.go:227 +0x110
panic(0x12f1400, 0xc444c04440)
	/usr/local/go/src/runtime/panic.go:502 +0x229
golang.org/x/tools/go/pointer.(*analysis).taggedValue(0xc44648c380, 0xc40001ee52, 0x1, 0x64, 0xc431852000)
	/Users/vincent/works/go/src/golang.org/x/tools/go/pointer/gen.go:272 +0x13a
golang.org/x/tools/go/pointer.(*typeFilterConstraint).solve(0xc44a0e93a0, 0xc44648c380, 0xc42f838340)
	/Users/vincent/works/go/src/golang.org/x/tools/go/pointer/solve.go:273 +0xae
golang.org/x/tools/go/pointer.(*analysis).solveConstraints(0xc44648c380, 0xc4446c3890, 0xc42f838340)
	/Users/vincent/works/go/src/golang.org/x/tools/go/pointer/solve.go:165 +0xa9
golang.org/x/tools/go/pointer.(*analysis).solve(0xc44648c380)
	/Users/vincent/works/go/src/golang.org/x/tools/go/pointer/solve.go:59 +0x2fb
golang.org/x/tools/go/pointer.Analyze(0xc43657b630, 0x0, 0x13dca80, 0xc444c04450)
	/Users/vincent/works/go/src/golang.org/x/tools/go/pointer/analysis.go:331 +0x51d
main.ptrAnalysis(0xc43657b630, 0xc446795f70)
	/Users/vincent/works/go/src/golang.org/x/tools/cmd/guru/guru.go:316 +0x2b
main.callers(0xc4200fc230, 0x7, 0x136e8c4)
	/Users/vincent/works/go/src/golang.org/x/tools/cmd/guru/callers.go:72 +0x55a
main.Run(0x7ffeefbff8d3, 0x7, 0xc4200fc230, 0x1, 0xc4200f6230)
	/Users/vincent/works/go/src/golang.org/x/tools/cmd/guru/guru.go:88 +0x2d4
main.main()
	/Users/vincent/works/go/src/golang.org/x/tools/cmd/guru/main.go:222 +0x3a3
panic: internal error in pointer analysis: not a tagged object: n126546 (please report this bug)

goroutine 1 [running]:
main.ptrAnalysis(0xc43657b630, 0xc446795f70)
	/Users/vincent/works/go/src/golang.org/x/tools/cmd/guru/guru.go:318 +0x65
main.callers(0xc4200fc230, 0x7, 0x136e8c4)
	/Users/vincent/works/go/src/golang.org/x/tools/cmd/guru/callers.go:72 +0x55a
main.Run(0x7ffeefbff8d3, 0x7, 0xc4200fc230, 0x1, 0xc4200f6230)
	/Users/vincent/works/go/src/golang.org/x/tools/cmd/guru/guru.go:88 +0x2d4
main.main()
	/Users/vincent/works/go/src/golang.org/x/tools/cmd/guru/main.go:222 +0x3a3
FAIL: 2
@FiloSottile FiloSottile changed the title guru callers got Internal panic in pointer analysis x/tools/cmd/guru: "panic: internal error in pointer analysis: not a tagged object" Aug 30, 2018
@gopherbot gopherbot added this to the Unreleased milestone Aug 30, 2018
@FiloSottile FiloSottile modified the milestones: Unreleased, Go1.12 Aug 30, 2018
@FiloSottile

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@FiloSottile FiloSottile commented Aug 30, 2018

@FiloSottile FiloSottile modified the milestones: Go1.12, Unreleased Aug 30, 2018
@gopherbot gopherbot added the Tools label Sep 12, 2019
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