Go version
go version go1.24.5 darwin/arm64
Output of go env in your module/workspace:
GOROOT='/opt/homebrew/Cellar/go/1.24.5/libexec'
What did you do?
$ go tool !
go: no such tool "!"
$ go tool ""
go tool : fork/exec /opt/homebrew/Cellar/go/1.24.5/libexec/pkg/tool/darwin_arm64: permission denied
What did you see happen?
The error message shows that the tool execution failure is caught by the OS which was given a directory path instead of a executable file path.
What did you expect to see?
go tool should reject much earlier such an invalid tool name and immediately fail with an error message.
$ go tool ""
go: no such tool ""
Comment From: dolmen
The implementation of tool lookup is in cmd/go/internal/base.Tool and ToolPath.
Comment From: dolmen
Patch in progress...
Comment From: gopherbot
Change https://go.dev/cl/690435 mentions this issue: cmd/go/internal/base: reject an empty tool name
Comment From: gabyhelp
Related Issues
- cmd/go: `go tool -n` can point to a file that doesn't exist #72824 (closed)
- cmd/go get doesn't validate module arguments #71437 (closed)
Related Code Changes
(Emoji vote if this was helpful or unhelpful; more detailed feedback welcome in this discussion.)
Comment From: mknyszek
CC @golang/command-line