x/tools/callgraph: panic: Cannot range over: func(yield func(E) bool)

[FlorianO]

Go version

go version go1.24.0 darwin/arm64

Output of go env in your module/workspace:

AR='ar'
CC='cc'
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_ENABLED='1'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
CXX='c++'
GCCGO='gccgo'
GO111MODULE=''
GOARCH='arm64'
GOARM64='v8.0'
GOAUTH='netrc'
GOBIN=''
GOCACHE='/Users/$USER/Library/Caches/go-build'
GOCACHEPROG=''
GODEBUG=''
GOENV='/Users/$USER/Library/Application Support/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFIPS140='off'
GOFLAGS=''
GOGCCFLAGS='-fPIC -arch arm64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -ffile-prefix-map=/var/folders/30/fz7ryvm518v086x8wqbq_pfw0000gn/T/go-build3461295816=/tmp/go-build -gno-record-gcc-switches -fno-common'
GOHOSTARCH='arm64'
GOHOSTOS='darwin'
GOINSECURE=''
GOOS='darwin'
GOPATH='/Users/$USER/go'
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/opt/homebrew/Cellar/go/1.24.0/libexec'
GOSUMDB='sum.golang.org'
GOTELEMETRY='local'
GOTELEMETRYDIR='/Users/$USER/Library/Application Support/go/telemetry'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/opt/homebrew/Cellar/go/1.24.0/libexec/pkg/tool/darwin_arm64'
GOVCS=''
GOVERSION='go1.24.0'
GOWORK=''
PKG_CONFIG='pkg-config'

What did you do?

Added callgraph to go.mod like this:
tool golang.org/x/tools/cmd/callgraph

then call it with:
go tool callgraph -format digraph cmd/$PROJECT/main.go

What did you see happen?

`panic: Cannot range over: func(yield func(string) bool)

goroutine 3375 [running]:
golang.org/x/tools/go/ssa.(*builder).rangeStmt(0x14017fce080, 0x14018073380, 0x14003046180, 0x0)
/Users/$USER/go/pkg/mod/golang.org/x/[email protected]/go/ssa/builder.go:2278 +0x850
golang.org/x/tools/go/ssa.(*builder).stmt(0x14017fce080, 0x14018073380, {0x100f7bdf8?, 0x14003046180?})
/Users/$USER/go/pkg/mod/golang.org/x/[email protected]/go/ssa/builder.go:2508 +0x138
golang.org/x/tools/go/ssa.(*builder).stmtList(...)
/Users/$USER/go/pkg/mod/golang.org/x/[email protected]/go/ssa/builder.go:908
golang.org/x/tools/go/ssa.(*builder).stmt(0x14017fce080, 0x14018073380, {0x100f7bac8?, 0x1400332f230?})
/Users/$USER/go/pkg/mod/golang.org/x/[email protected]/go/ssa/builder.go:2470 +0x13b8
golang.org/x/tools/go/ssa.(*builder).buildFromSyntax(0x14017fce080, 0x14018073380)
/Users/$USER/go/pkg/mod/golang.org/x/[email protected]/go/ssa/builder.go:2582 +0x208
golang.org/x/tools/go/ssa.(*builder).buildFunction(0x1?, 0x14018073380)
/Users/$USER/go/pkg/mod/golang.org/x/[email protected]/go/ssa/builder.go:2536 +0x10c
golang.org/x/tools/go/ssa.(*builder).iterate(0x14017fce080)
/Users/$USER/go/pkg/mod/golang.org/x/[email protected]/go/ssa/builder.go:2524 +0x2c
golang.org/x/tools/go/ssa.(*Package).build(0x1401571ad80)
/Users/$USER/go/pkg/mod/golang.org/x/[email protected]/go/ssa/builder.go:2658 +0xa4
sync.(*Once).doSlow(0x59?, 0x140103483b0?)
/opt/homebrew/Cellar/go/1.24.0/libexec/src/sync/once.go:78 +0xf0
sync.(*Once).Do(...)
/opt/homebrew/Cellar/go/1.24.0/libexec/src/sync/once.go:69
golang.org/x/tools/go/ssa.(*Package).Build(...)
/Users/$USER/go/pkg/mod/golang.org/x/[email protected]/go/ssa/builder.go:2647
golang.org/x/tools/go/ssa.(*Program).Build.func1(0x0?)
/Users/$USER/go/pkg/mod/golang.org/x/[email protected]/go/ssa/builder.go:2626 +0x50
created by golang.org/x/tools/go/ssa.(*Program).Build in goroutine 1
/Users/$USER/go/pkg/mod/golang.org/x/[email protected]/go/ssa/builder.go:2625 +0x178`

What did you expect to see?

A nice digraph

[gabyhelp]

Related Issues

• import/path: issue title #70442 (closed)
• x/vuln: Panic "cannot range over: func(yield func(K, V) bool) using golang 1.23.0 #68978 (closed)
• x/text/message/pipeline: TestFullCycle/ssa fails with "panic: Cannot range over: func(yield func(E) bool)" on Go tip #67348 (closed)
• x/tools/go/ssa/builder.go: panic("nil underlyin") while executing *ssa.Program.Build() #68195 (closed)
• x/tools/go/ssa: unexpected container type in IndexExpr #52834 (closed)
• x/vuln: Panics regularly #54995 (closed)
• x/tools/go/ssa: panic: no ssa.Value for function argument #33279
• cmd/compile: ICE compiling rangefunc for < 1.23 in combination with Cgo #67497 (closed)
• cmd/compile: panic during sccp while compiling main runtime error: index out of range [-5] #64826 (closed)
• x/vuln: panic while running govulncheck with 1.23+ (panic: *types.Alias: any) #70350 (closed)

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

[seankhliao]

upgrade x/tools, v0.20.0 is too old.

[FlorianO]

If someone stumbles apon this and you have configured the tool through go.mod:
go get golang.org/x/[email protected]