[m-rev.] diff: remove destructive update modes of string__set_char

[Fergus Henderson]

On 26-Oct-2001, Simon Taylor <stayl at cs.mu.OZ.AU> wrote:
> 
> Estimated hours taken: 0.25
> Branches: main, release
> 
> NEWS:
> library/string.m:
> 	Remove the buggy destructive update modes of string__set_char,
> 	string__set_char_det and string__unsafe_set_char (they cause
> 	crashes when applied to constant strings).

These modes are not buggy.  The bug is storing strings or other data
structures in read-only memory when they are passed to procedures with
mode `di'.

-- 
Fergus Henderson <fjh at cs.mu.oz.au>  | "... it seems to me that 15 years of
The University of Melbourne         | email is plenty for one lifetime."
WWW: <http://www.cs.mu.oz.au/~fjh>  |     -- Prof. Donald E. Knuth
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