Ask questionscmd/compile: illegal instruction (core dumped) on FreeBSD ARM64

What version of Go are you using? 1.14rc1

<pre> go version go1.14rc1 darwin/amd64 </pre>

Does this issue reproduce with the latest release?


What operating system and processor architecture are you using (go env)?

<details><summary><code>go env</code> Output</summary><br><pre> GO111MODULE="" GOARCH="amd64" GOBIN="" GOCACHE="/Users/artooro/Library/Caches/go-build" GOENV="/Users/artooro/Library/Application Support/go/env" GOEXE="" GOFLAGS="" GOHOSTARCH="amd64" GOHOSTOS="darwin" GOINSECURE="" GONOPROXY="" GONOSUMDB="" GOOS="darwin" GOPATH="/Users/artooro/go" GOPRIVATE="" GOPROXY=",direct" GOROOT="/usr/local/go" GOSUMDB="" GOTMPDIR="" GOTOOLDIR="/usr/local/go/pkg/tool/darwin_amd64" GCCGO="gccgo" AR="ar" CC="clang" CXX="clang++" CGO_ENABLED="1" GOMOD="" CGO_CFLAGS="-g -O2" CGO_CPPFLAGS="" CGO_CXXFLAGS="-g -O2" CGO_FFLAGS="-g -O2" CGO_LDFLAGS="-g -O2" PKG_CONFIG="pkg-config" GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/9z/jlqzn0wj4g12dg0ykj78dyph0000gn/T/go-build674964893=/tmp/go-build -gno-record-gcc-switches -fno-common"


What did you do?

This can be reproduced by a very basic program, for example:

package main

import "fmt"

func main() {
	fmt.Println("Hello world")

Compile with the following environment variables.


Tried to run it on a Marvell Armada 3720LP (88F3720) dual core ARM Cortex A53.

What did you expect to see?

For the program to print "Hello World"

What did you see instead?

I get the following output: Illegal instruction (core dumped)

Here is the core dump file of that test program.


Answer questions ianlancetaylor

Thanks. Please use x/i $pc to see the exact instruction.


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