const os.O_TRUNC

3 uses

	os (current package)
		file.go#L83: 	O_TRUNC  int = syscall.O_TRUNC  // truncate regular writable file when opened.
		file.go#L327: 	return OpenFile(name, O_RDWR|O_CREATE|O_TRUNC, 0666)
		file.go#L714: 	f, err := OpenFile(name, O_WRONLY|O_CREATE|O_TRUNC, perm)