gcloud functions deploy go runtime error "undefined: unsafe.Slice; Error ID: 2f5e35a0"

While deploying to google cloud function, I am getting this error:

ERROR: (gcloud.functions.deploy) OperationError: code=3, message=Build failed: # projectname/vendor/golang.org/x/sys/unix
src/projectname/vendor/golang.org/x/sys/unix/syscall.go:83:16: undefined: unsafe.Slice
src/projectname/vendor/golang.org/x/sys/unix/syscall_linux.go:2255:9: undefined: unsafe.Slice
src/projectname/vendor/golang.org/x/sys/unix/syscall_unix.go:118:7: undefined: unsafe.Slice
src/projectname/vendor/golang.org/x/sys/unix/sysvshm_unix.go:33:7: undefined: unsafe.Slice; Error ID: 2f5e35a0

Here's my command:

gcloud functions deploy servicename --region=us-central1 --entry-point=gofunctionname --runtime=go116 --source=.

I am using vendoring to package my dependencies. It's been a while I have updated this function. And first time I noticed this error.

Any help would be much appreciated.

As DazWilkin suggested above, unsafe.Slice was added as part of Go 1.17 and GCP Functions support Go 1.16 as of now.

I had to revert back the golang.org/x/sys module in the go.mod file and it worked for me.

From

golang.org/x/sys v0.0.0-20221010170243-090e33056c14 // indirect

To

golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab // indirect

With this change, I am able to build and deploy the code to Google Cloud Functions.

As of the time of writing this, Google Cloud Functions now supports Go 1.18 and Go 1.19.

Update your project to go119 and you shouldn't have this issue anymore. For example:

gcloud functions deploy servicename --runtime=go119 --region=us-central1