Mismatch between fmt and io packages

[LukeMauldin]

In Go 1.1:
Function fmt.Fprint(w io.Writer, a ...interface{}) returns an "int" while
io.WriterTo interface returns an "int64".  Consequently, a program like
http://play.golang.org/p/b2tcACyfpC fails with this compile error:
invalid operation: totalWritten += n (mismatched types int64 and int)

I think that fmt.Fprint should be changed to return an int64 instead of an int.  This
may have to wait until Go 2.0 because I think this would be an API change.

[ianlancetaylor]

Comment 1:

Your argument doesn't seem compelling.  The odd cases here are io.ReaderFrom and
io.WriterTo; everything else uses int.  And those cases use int64 because they are
designed to transfer a large amount of data in a series of calls; the other functions
are only called once.  It's easy to make your program work by adding a conversion to
int64.  (And your program should probably use io.WriteString rather than fmt.Fprint.)

Status changed to WorkingAsIntended.