Illegal instruction about evmdis

[shoenseiwaso]

Hi @wighawag, can you provide more information on the steps you took to download and compile evmdis?

For example, go get with specific cross-compiler flags. Also, please include your golang version.

[wighawag]

Hi @shoenseiwaso

I initially cloned the repo in the correct GOPATH/src location, and executed go build
Then because of the issue I executed go install ...

My go version is actually very old, maybe that is the issue : 1.3.3

I tried to install the latest go version 1.9.1 without success. Might be a incompatible glibc

[wighawag]

No flag was added

[shoenseiwaso]

1.3.3 is quite an old version of Go, can you try upgrading? A quick web search turned up some issues with older Go versions that might be related.

More generally, the error message could imply you are compiling for one CPU architecture, but attempting to run it on another. For example, you're compiling on your laptop which is an x86 CPU but running it on Android which is an ARM CPU. Do you think this might be the case?

[wighawag]

I am building from proper architecture, everything is done on the same device

I upgraded to 1.7 and now I got a different error :

go install github.com/Arachnid/evmdis/evmdis

Result in:

go build github.com/Arachnid/evmdis/stack: /usr/lib/go-1.7/pkg/tool/linux_arm/compile: signal: segmentation fault

[shoenseiwaso]

That looks like a compiler issue: either a bug in Go 1.7, or an issue on your platform. I tried cross-compiling for Linux on ARM with Go 1.7 but couldn't reproduce the particular issue:

$ GOROOT=`pwd`/tmp/go tmp/go/bin/go version
go version go1.7 darwin/amd64
$ GOOS=linux GOARCH=arm GOROOT=`pwd`/tmp/go tmp/go/bin/go build -o ./evmdis-arm-test github.com/Arachnid/evmdis/evmdis
$

You could try opening an issue with the Go team directly, but I suspect their response is going to be, "upgrade to the latest version of Go".

Do you have any other ideas about what it might be?

Regardless, I don't think it's related to evmdis. For example, here are all the imports:

$ find * -iname '*.go' | xargs -I{} grep -C 6 import {} | grep -E '"' | sort -u
	"encoding/hex"
	"flag"
	"fmt"
	"github.com/Arachnid/evmdis/stack"
	"io/ioutil"
	"log"
	"math/big"
	"os"
	"reflect"
	"strings"

[wighawag]

Thanks @shoenseiwaso for your time, this indeed does not seem to be a evmdis issue.
I ll close it and add a comment if I find a solution