cmd/dist: dist vet tests get incorrect platform names

[williamweixiao]

Please answer these questions before submitting your issue. Thanks!

What version of Go are you using (go version)?

go version devel +8a2cc22 Wed Apr 12 23:33:11 2017 +0000 linux/amd64

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

GOARCH="amd64"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/home/weixia01/go"
GORACE=""
GOROOT="/home/weixia01/workspace/golang/internal"
GOTOOLDIR="/home/weixia01/workspace/golang/internal/pkg/tool/linux_amd64"
GCCGO="gccgo"
CC="gcc"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build757339427=/tmp/go-build -gno-record-gcc-switches"
CXX="g++"
CGO_ENABLED="1"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"

What did you do?

$ export GO_BUILDER_NAME="*-vetall"
$ go tool dist test -run arm64$

What did you expect to see?

go vet std cmd

go run main.go -p darwin/arm64
go run main.go -p android/arm64
go run main.go -p linux/arm64

ALL TESTS PASSED (some were excluded)

go vet std cmd

go run main.go -p darwin/arm64
go run main.go -p android/arm64
go run main.go -p linux/arm64

ALL TESTS PASSED (some were excluded)

What did you see instead?

go vet std cmd

go run main.go -p darwin/386
go run main.go -p darwin/386
go run main.go -p darwin/386

ALL TESTS PASSED (some were excluded)

[gopherbot]

CL https://golang.org/cl/40511 mentions this issue.