null terminated strings (was: argz SMOB)

null terminated strings (was: argz SMOB)

[Andreas Voegele]

Paul Jarc writes:

> Brian S McQueen <bqueen@nas.nasa.gov> wrote:
>> Particularly, I wonder about the best way to produce a null
>> terminated C string from a scheme string.
>
> SCM_STRING_COERCE_0TERMINATION_X(scheme_string);
> char* s=SCM_STRING_CHARS(scheme_string);

Is it necessary or desirable to use the macro
SCM_STRING_COERCE_0TERMINATION_X if one uses Guile 1.6?  I've found
the following statement in the file libguile/strings.c that comes with
Guile 1.6.4:

"[...] we promise that strings are null-terminated."

And in guile-readline/Changelog:

"Remove calls to SCM_STRING_COERCE_0TERMINATION_X.  Since the
substring type is gone, all strings are 0-terminated anyway."


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Re: null terminated strings (was: argz SMOB)

[Roland Orre]

On Fri, 2004-01-16 at 10:10, Andreas Voegele wrote:

> "Remove calls to SCM_STRING_COERCE_0TERMINATION_X.  Since the
> substring type is gone, all strings are 0-terminated anyway."

Such a statement is very worrying. What happened to the promises
that all substrings will be shared strings? 

	Roland Orre





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