From a27ed538fa1903b87bb9f6a76b78883ded3df3c2 Mon Sep 17 00:00:00 2001
From: akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Fri, 6 Aug 2004 16:01:02 +0000
Subject: * ext/zlib/zlib.c: Zlib::GzipReader#read(0) returns "" instead of
 nil.

git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@6739 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ext/zlib/zlib.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'ext')

diff --git a/ext/zlib/zlib.c b/ext/zlib/zlib.c
index e665b7b6b..c5e9e7437 100644
--- a/ext/zlib/zlib.c
+++ b/ext/zlib/zlib.c
@@ -2075,7 +2075,10 @@ gzfile_read(gz, len)
 {
     VALUE dst;
 
-    if (len <= 0) return Qnil;
+    if (len < 0)
+        rb_raise(rb_eArgError, "negative length %d given", len);
+    if (len == 0)
+	return rb_str_new(0, 0);
     while (!ZSTREAM_IS_FINISHED(&gz->z) && gz->z.buf_filled < len) {
 	gzfile_read_more(gz);
     }
-- 
cgit