merge revision(s) r47327: [Backport ruby#10008]

	* ext/zlib/zlib.c (gzfile_reset): preserve ZSTREAM_FLAG_GZFILE
	  [Bug ruby#10101]

	* test/zlib/test_zlib.rb (test_rewind): test each_byte


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@47419 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

Author: nagachika

ChangeLog

@@ -1,3 +1,10 @@
+Sat Sep  6 00:57:07 2014  Eric Wong  <[email protected]>
+
+	* ext/zlib/zlib.c (gzfile_reset): preserve ZSTREAM_FLAG_GZFILE
+	  [Bug #10101]
+
+	* test/zlib/test_zlib.rb (test_rewind): test each_byte
+
 Sat Sep  6 00:47:32 2014  Nobuyoshi Nakada  <[email protected]>
 
 	* configure.in (rb_cv_broken_backtrace): exit with failure

ext/zlib/zlib.c

@@ -2288,6 +2288,7 @@ static void
 gzfile_reset(struct gzfile *gz)
 {
     zstream_reset(&gz->z);
+    gz->z.flags |= ZSTREAM_FLAG_GZFILE;
     gz->crc = crc32(0, Z_NULL, 0);
     gz->lineno = 0;
     gz->ungetc = 0;

test/zlib/test_zlib.rb

@@ -697,6 +697,11 @@ def test_rewind
           assert_equal("foo", f.read)
           f.rewind
           assert_equal("foo", f.read)
+
+          f.rewind
+          bytes = []
+          f.each_byte { |b| bytes << b }
+          assert_equal "foo".bytes.to_a, bytes, '[Bug #10101]'
         end
         open(t.path, "rb") do |f|
           gz = Zlib::GzipReader.new(f)

version.h

@@ -1,6 +1,6 @@
 #define RUBY_VERSION "2.1.2"
 #define RUBY_RELEASE_DATE "2014-09-06"
-#define RUBY_PATCHLEVEL 225
+#define RUBY_PATCHLEVEL 226
 
 #define RUBY_RELEASE_YEAR 2014
 #define RUBY_RELEASE_MONTH 9