* string.c (rb_str_new): set US-ASCII and ENC_CODERANGE_7BIT when

  empty string (len == 0).


git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@15247 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 6 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index 6b1711f67..c6ebb49a4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Sat Jan 26 09:17:13 2008  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* string.c (rb_str_new): set US-ASCII and ENC_CODERANGE_7BIT when
+	  empty string (len == 0).
+
 Sat Jan 26 03:41:53 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* parse.y (parser_initialize): set default script encoding as US-ASCII.
diff --git a/string.c b/string.c
index 684f88025..94c919787 100644
--- a/string.c
+++ b/string.c
@@ -278,7 +278,7 @@ str_new(VALUE klass, const char *ptr, long len)
     if (ptr) {
 	memcpy(RSTRING_PTR(str), ptr, len);
     }
-    else {
+    if (len == 0) {
 	ENCODING_CODERANGE_SET(str, rb_usascii_encindex(), ENC_CODERANGE_7BIT);
     }
     STR_SET_LEN(str, len);