prefer compilers earlier in list

[bpt/guile.git] / libguile / strings.c

diff --git a/libguile/strings.c b/libguile/strings.c
index 1f492bd..90dc83a 100644 (file)
--- a/libguile/strings.c
+++ b/libguile/strings.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995,1996,1998,2000,2001, 2004, 2006, 2008, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc.
+/* Copyright (C) 1995,1996,1998,2000,2001, 2004, 2006, 2008, 2009, 2010, 2011, 2012, 2013, 2014 Free Software Foundation, Inc.
  * 
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public License
@@ -280,6 +280,15 @@ scm_i_print_stringbuf (SCM exp, SCM port, scm_print_state *pstate)
 
 SCM scm_nullstr;
 
+static SCM null_stringbuf;
+
+static void
+init_null_stringbuf (void)
+{
+  null_stringbuf = make_stringbuf (0);
+  SET_STRINGBUF_SHARED (null_stringbuf);
+}
+
 /* Create a scheme string with space for LEN 8-bit Latin-1-encoded
    characters.  CHARSP, if not NULL, will be set to location of the
    char array.  If READ_ONLY_P, the returned string is read-only;
@@ -287,17 +296,13 @@ SCM scm_nullstr;
 SCM
 scm_i_make_string (size_t len, char **charsp, int read_only_p)
 {
-  static SCM null_stringbuf = SCM_BOOL_F;
   SCM buf;
   SCM res;
 
   if (len == 0)
     {
-      if (SCM_UNLIKELY (scm_is_false (null_stringbuf)))
-        {
-          null_stringbuf = make_stringbuf (0);
-          SET_STRINGBUF_SHARED (null_stringbuf);
-        }
+      static scm_i_pthread_once_t once = SCM_I_PTHREAD_ONCE_INIT;
+      scm_i_pthread_once (&once, init_null_stringbuf);
       buf = null_stringbuf;
     }
   else
@@ -2460,34 +2465,6 @@ scm_i_get_substring_spec (size_t len,
     *cend = scm_to_unsigned_integer (end, *cstart, len);
 }
                  
-static SCM
-string_handle_ref (scm_t_array_handle *h, size_t index)
-{
-  return scm_c_string_ref (h->array, index);
-}
-
-static void
-string_handle_set (scm_t_array_handle *h, size_t index, SCM val)
-{
-  scm_c_string_set_x (h->array, index, val);
-}
-
-static void
-string_get_handle (SCM v, scm_t_array_handle *h)
-{
-  h->array = v;
-  h->ndims = 1;
-  h->dims = &h->dim0;
-  h->dim0.lbnd = 0;
-  h->dim0.ubnd = scm_c_string_length (v) - 1;
-  h->dim0.inc = 1;
-  h->element_type = SCM_ARRAY_ELEMENT_TYPE_CHAR;
-  h->elements = h->writable_elements = NULL;
-}
-
-SCM_ARRAY_IMPLEMENTATION (scm_tc7_string, 0x7f,
-                          string_handle_ref, string_handle_set,
-                          string_get_handle)
 SCM_VECTOR_IMPLEMENTATION (SCM_ARRAY_ELEMENT_TYPE_CHAR, scm_make_string)
 
 void