nobu	2008-10-10 03:41:35 +0900 (Fri, 10 Oct 2008)

  New Revision: 19737

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=19737

  Log:
    * sprintf.c (rb_str_format): check if codepoint for %c is valid.
      [ruby-dev:36691]

  Modified files:
    trunk/ChangeLog
    trunk/sprintf.c

Index: ChangeLog
===================================================================
--- ChangeLog	(revision 19736)
+++ ChangeLog	(revision 19737)
@@ -1,3 +1,8 @@
+Fri Oct 10 03:41:31 2008  Nobuyoshi Nakada  <nobu@r...>
+
+	* sprintf.c (rb_str_format): check if codepoint for %c is valid.
+	  [ruby-dev:36691]
+
 Fri Oct 10 01:55:48 2008  Nobuyoshi Nakada  <nobu@r...>
 
 	* encoding.c (enc_names): minor improvement.
Index: sprintf.c
===================================================================
--- sprintf.c	(revision 19736)
+++ sprintf.c	(revision 19737)
@@ -618,7 +618,7 @@
 		    c = NUM2INT(val);
 		}
 		n = rb_enc_codelen(c, enc);
-		if (n == 0) {
+		if (n <= 0) {
 		    rb_raise(rb_eArgError, "invalid character");
 		}
 		if (!(flags & FWIDTH)) {

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