Subject: bug#22667: string->bytevector encoding error

From: Andy Wingo <[email-masked]>
Date: Mon, 20 Jun 2016 18:07:21 +0200

On Sun 14 Feb 2016 23:18, Josep Portella Florit <[email-masked]> writes:

> 'string->bytevector' throws 'encoding-error' when the encoding is
> "UTF-16" and the length of the string is greater than 128.  The same
> for the encoding "UTF-32" and a string of length greater than 64.
>
> Tested on Guile 2.0.11 and 2.1.2 with the same result.
>
> How to reproduce:
>
> (use-modules (ice-9 iconv))
>
> ;; These expressions evaluate as expected:
> (string->bytevector (make-string 128 #\A) "UTF-16")
> ;; => #vu8(254 255 0 65 0 65 ...)
> (string->bytevector (make-string 64 #\A) "UTF-32")
> ;; => #vu8(0 0 254 255 0 0 0 65 0 0 0 65 ...)
>
> ;; These expressions throw 'encoding-error':
> (string->bytevector (make-string 129 #\A) "UTF-16")
> (string->bytevector (make-string 65 #\A) "UTF-32")

For what it's worth, this appears to be fixed in 2.1.3.  However we
should fix 2.0 as well.

Andy