mpi: use wchar_t string for text-to-bignum.

* mpi/mpi.c (mp_read_radix): Take const wchar_t * string
rather than unsigned char *.
(s_mp_tovalue): Take character argument as wchar_t rather
than int.

* mpi/mpi.h (mp_read_radix): Declaration updated.

* lib.c (int_str): Avoid a malloc/free and UTF-8 conversion by
passing the original wide string to mp_read_radix.
This removes a TODO dating back to December 2011.

1 files changed, 1 insertions, 4 deletions

diff --git a/lib.c b/lib.c
index a1a203b7..925bf638 100644
--- a/lib.c
+++ b/lib.c
@@ -4600,11 +4600,8 @@ val int_str(val str, val base)
 
   if ((value == LONG_MAX || value == LONG_MIN) && errno == ERANGE) {
     val bignum = make_bignum();
-    size_t size;
-    unsigned char *ucs = utf8_dup_to_buf(wcs, &size, 1);
-    mp_err err = mp_read_radix(mp(bignum), ucs, b);
+    mp_err err = mp_read_radix(mp(bignum), wcs, b);
 
-    free(ucs); /* TODO: make wchar_t version of mp_read_radix. */
     gc_hint(str);
 
     if (err != MP_OKAY)