Re: uniform-array-read!

[Jon Wilson]

Hi y'all,


> Using Guile 1.7:
>
>   guile> (define a (make-uniform-array #\nul 10))
>   guile> (uniform-array-read! a (open-input-string (string #\001 #\002 #\003)))
>   3
>   guile> a
>   #s8(1 2 3 32 51 10 -102 96 48 10)
>   guile>
>
> IOW, it seems to work fine --- except that:
>
>  1. The array is not properly initialized;
>
>  2. The result is not a string as one would expect from the Guile 1.6
>     manual[*] (in fact it could hardly be a string since internally
>     strings may not contain null characters AFAIK).
>
> So 1.7 is _not_ compatible with 1.6 in that respect.  I guess we need to
> fix this.

Here is the same in 1.6, just for good measure:

guile> (define a (make-uniform-array #\nul 10))
guile> a
#y(0 0 0 0 0 0 0 0 0 0)
guile> (uniform-array-read! a (open-input-string (string #\001 #\002 #\003)))
3
guile> a
#y(1 2 3 0 0 0 0 0 0 0)

The result is not a string, probably because the array was originally 
defined to be filled with null chars.  If I define the array to originally 
contain some valid character, then subsequently it displays as a string.

Regards,
Jon