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Make scm_nullstr mutable

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* libguile/strings.c (scm_init_strings): Make scm_nullstr mutable.  It
  is still usable as a common object, because of course it contains no
  characters to mutate anyway.  It is returned by several procedures
  that are specified to return mutable strings, and string mutators
  raise errors when passed an immutable string, even if it is the null
  string.
This commit is contained in:
Mark H Weaver 2012-01-06 18:39:04 -05:00
parent 213544e0dc
commit a7e392c1ff
1 changed files with 2 additions and 2 deletions
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4
libguile/strings.c
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@ -1,4 +1,4 @@
/* Copyright (C) 1995,1996,1998,2000,2001, 2004, 2006, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. /* Copyright (C) 1995,1996,1998,2000,2001, 2004, 2006, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
* *
* This library is free software; you can redistribute it and/or * This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License * modify it under the terms of the GNU Lesser General Public License
@ -2224,7 +2224,7 @@ SCM_VECTOR_IMPLEMENTATION (SCM_ARRAY_ELEMENT_TYPE_CHAR, scm_make_string)
void void
scm_init_strings () scm_init_strings ()
{ {
scm_nullstr = scm_i_make_string (0, NULL, 1); scm_nullstr = scm_i_make_string (0, NULL, 0);
#include "libguile/strings.x" #include "libguile/strings.x"
} }