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compiler: crash on assert #66916

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evanphx opened this issue Apr 19, 2024 · 1 comment
Closed

compiler: crash on assert #66916

evanphx opened this issue Apr 19, 2024 · 1 comment

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@evanphx
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evanphx commented Apr 19, 2024

Go version

go version go1.22.1 linux/arm64

Output of go env in your module/workspace:

GO111MODULE=''
GOARCH='arm64'
GOBIN=''
GOCACHE='/home/evanphx/.cache/go-build'
GOENV='/home/evanphx/.config/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFLAGS=''
GOHOSTARCH='arm64'
GOHOSTOS='linux'
GOINSECURE=''
GOMODCACHE='/home/evanphx/go/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='linux'
GOPATH='/home/evanphx/go'
GOPRIVATE=''
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/usr/local/go'
GOSUMDB='sum.golang.org'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/usr/local/go/pkg/tool/linux_arm64'
GOVCS=''
GOVERSION='go1.22.1'
GCCGO='gccgo'
AR='ar'
CC='gcc'
CXX='g++'
CGO_ENABLED='1'
GOMOD='/dev/null'
GOWORK=''
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
PKG_CONFIG='pkg-config'
GOGCCFLAGS='-fPIC -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build1917543129=/tmp/go-build -gno-record-gcc-switches'

What did you do?

Was writing a bytecode interpreter and randomly caused this. The following program is a simplification.

package main

func main() {}

type bugs struct {
        insns []*int
}

func runbug(fn *bugs) {
        panic("no")
        c := fn

loop:
        for {
                _ = c.insns[0]
                continue loop
        }
}

What did you see happen?

Go outputs:

# command-line-arguments
CLOSURE [/home/evanphx/tmp/bug.go:15:7:var c *main.bugs]
<unknown line number>: internal compiler error: assertion failed

Please file a bug report including a short program that triggers the error.
https://go.dev/issue/new

What did you expect to see?

Nothing, the program does nothing.
@cuonglm
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cuonglm commented Apr 19, 2024

Duplicated of #65593, it was fixed in go1.22.2

@cuonglm cuonglm closed this as completed Apr 19, 2024
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@evanphx @cuonglm