* string.c (rb_str_each_line): don't call rb_enc_codepoint with empty

  string.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@14688 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 6 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index ad26d83687..5e0eba52d8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Tue Dec 25 18:27:51 2007  Tanaka Akira  <akr@fsij.org>
+
+	* string.c (rb_str_each_line): don't call rb_enc_codepoint with empty
+	  string.
+
 Tue Dec 25 18:06:04 2007  Tanaka Akira  <akr@fsij.org>
 	
 	* string.c (rb_str_inspect): don't call rb_enc_codepoint with empty
diff --git a/string.c b/string.c
index b06c2f5b8f..aaf14468af 100644
--- a/string.c
+++ b/string.c
@@ -4310,7 +4310,7 @@ rb_str_each_line(int argc, VALUE *argv, VALUE str)
 	int n = rb_enc_codelen(c, enc);
 
 	if (rslen == 0 && c == newline) {
-	    while (rb_enc_codepoint(p, pend, enc) == newline) {
+	    while (p < pend && rb_enc_codepoint(p, pend, enc) == newline) {
 		p += n;
 	    }
 	    p -= n;