}{
		{"GOARCH", runtime.GOARCH},
		{"GOOS", runtime.GOOS},
		{"GOROOT", testGOROOT},
		{"GOPATH", os.Getenv("GOPATH")},
		{"CgoEnabled", ""},
		{"UseAllFiles", ""},
		{"Compiler", ""},
		{"BuildTags", ""},
		{"ReleaseTags", ""},
		{"InstallSuffix", ""},
	} {
		tt := tt
		t.Run(tt.v, func(t *testing.T) {
			tg := testgo(t)
			tg.parallel()
			defer tg.cleanup()

	}
	if cfg.BuildMSan {
		appendSetting("-msan", "true")
	}
	// N.B. -pgo added later by setPGOProfilePath.
	if cfg.BuildRace {
		appendSetting("-race", "true")
	}
	if tags := cfg.BuildContext.BuildTags; len(tags) > 0 {
		appendSetting("-tags", strings.Join(tags, ","))
	}
	if cfg.BuildTrimpath {
		appendSetting("-trimpath", "true")
	}
	if p.DefaultGODEBUG != "" {