[Guile-commits] 01/04: scm_mkstrport: Optimize the POS -> BYTE_POS conversion.

[Mark H. Weaver]

mhw pushed a commit to branch stable-2.2
in repository guile.

commit 9f7a824206702350427aa59382082d1019c3011d
Author: Mark H Weaver <address@hidden>
Date:   Tue Jun 18 02:09:16 2019 -0400

    scm_mkstrport: Optimize the POS -> BYTE_POS conversion.
    
    * libguile/strports.c (scm_mkstrport): Use 'scm_c_string_utf8_length' to
    avoid the conversion to UTF-8.
---
 libguile/strports.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libguile/strports.c b/libguile/strports.c
index 876a62a..14cdfa0 100644
--- a/libguile/strports.c
+++ b/libguile/strports.c
@@ -195,8 +195,8 @@ scm_mkstrport (SCM pos, SCM str, long modes, const char 
*caller)
       else
         /* Inefficient but simple way to convert the character position
            POS into a byte position BYTE_POS.  */
-        free (scm_to_utf8_stringn (scm_substring (str, SCM_INUM0, pos),
-                                   &byte_pos));
+        byte_pos = scm_c_string_utf8_length
+          (scm_substring (str, SCM_INUM0, pos));
     }
 
   stream = scm_gc_typed_calloc (struct string_port);