Update.

	* iconv/gconv_open.c (__gconv_open): Empty codeset name now means using
	the current locale's codeset.
	* iconv/iconv_open.c (iconv_open): Don't strip out everything for
	empty input string.
	* iconv/iconv_prog.c: Pass empty strings as default value for to-
	and from-charset.  Don't determine locale's charset here.

	if libio is used [PR libc/2575].

1 files changed, 5 insertions, 4 deletions

diff --git a/iconv/iconv_open.c b/iconv/iconv_open.c
index ac44af80cb..e0f6135575 100644
--- a/iconv/iconv_open.c
+++ b/iconv/iconv_open.c
@@ -40,14 +40,15 @@ iconv_open (const char *tocode, const char *fromcode)
   /* Normalize the name.  We remove all characters beside alpha-numeric,
      '_', '-', '/', and '.'.  */
   tocode_len = strlen (tocode);
-  tocode_conv = alloca (tocode_len + 3);
+  tocode_conv = (char *) alloca (tocode_len + 3);
   strip (tocode_conv, tocode);
-  tocode = tocode_conv[2] == '\0' ? upstr (tocode_conv, tocode) : tocode_conv;
+  tocode = (tocode_conv[2] == '\0' && tocode[0] != '\0'
+	    ? upstr (tocode_conv, tocode) : tocode_conv);
 
   fromcode_len = strlen (fromcode);
-  fromcode_conv = alloca (fromcode_len + 3);
+  fromcode_conv = (char *) alloca (fromcode_len + 3);
   strip (fromcode_conv, fromcode);
-  fromcode = (fromcode_conv[2] == '\0'
+  fromcode = (fromcode_conv[2] == '\0' && fromcode[0] != '\0'
 	      ? upstr (fromcode_conv, fromcode) : fromcode_conv);
 
   res = __gconv_open (tocode, fromcode, &cd, 0);