# Tests Issue #10500 [!race] skip env GOBIN=$WORK/bin go install m/mtime m/sametime go tool -n cgo cp stdout cgopath.txt exec $GOBIN/mtime cgopath.txt # get the mtime of the file whose name is in cgopath.txt cp stdout cgotime_before.txt # For this test, we don't actually care whether 'go test -race -i' succeeds. # It may fail if GOROOT is read-only (perhaps it was installed as root). # We only care that it does not overwrite cmd/cgo regardless. ? go test -race -i runtime/race exec $GOBIN/mtime cgopath.txt # get the mtime of the file whose name is in cgopath.txt cp stdout cgotime_after.txt exec $GOBIN/sametime cgotime_before.txt cgotime_after.txt -- go.mod -- module m go 1.16 -- mtime/mtime.go -- package main import ( "encoding/json" "fmt" "os" "strings" ) func main() { b, err := os.ReadFile(os.Args[1]) if err != nil { fmt.Fprintln(os.Stderr, err) os.Exit(1) } filename := strings.TrimSpace(string(b)) info, err := os.Stat(filename) if err != nil { fmt.Fprintln(os.Stderr, err) os.Exit(1) } if err := json.NewEncoder(os.Stdout).Encode(info.ModTime()); err != nil { fmt.Fprintln(os.Stderr, err) os.Exit(1) } } -- sametime/sametime.go -- package main import ( "encoding/json" "fmt" "os" "time" ) func main() { var t1 time.Time b1, err := os.ReadFile(os.Args[1]) if err != nil { fmt.Fprintln(os.Stderr, err) os.Exit(1) } if err := json.Unmarshal(b1, &t1); err != nil { fmt.Fprintln(os.Stderr, err) os.Exit(1) } var t2 time.Time b2, err := os.ReadFile(os.Args[2]) if err != nil { fmt.Fprintln(os.Stderr, err) os.Exit(1) } if err := json.Unmarshal(b2, &t2); err != nil { fmt.Fprintln(os.Stderr, err) os.Exit(1) } if !t1.Equal(t2) { fmt.Fprintf(os.Stderr, "time in %v (%v) is not the same as time in %v (%v)", os.Args[1], t1, os.Args[2], t2) os.Exit(1) } }