Ruby

Digest::SHA256.file()'s first argument is file path name but it accidentally accepts file object.
But for file objects created with O_TMPFILE to_path returns the directory of the temporary file and this File.open will fail.

 class ::Digest::Class # Creates a digest object and reads a given file, _name_. # Optional arguments are passed to the constructor of the digest # class. # # p Digest::SHA256.file("X11R6.8.2-src.tar.bz2").hexdigest # # => "f02e3c85572dc9ad7cb77c2a638e3be24cc1b5bea9fdbb0b0299c9668475c534" def self.file(name, *args) new(*args).file(name) end end module Instance # Updates the digest with the contents of a given file _name_ and # returns self. def file(name) File.open(name, "rb") {|f| buf = "" while f.read(16384, buf) update buf end } self end