From 8c8642fdfac75467d30ebc2882a75e1fc74d3db8 Mon Sep 17 00:00:00 2001
From: Abs62 <ottomann@yandex.ru>
Date: Mon, 5 Nov 2012 20:05:58 +0400
Subject: [PATCH] Call gzrewind() before gzseek() for uncompressed files

---
 dsl_details.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/dsl_details.cc b/dsl_details.cc
index 20f3c710..cca45b20 100644
--- a/dsl_details.cc
+++ b/dsl_details.cc
@@ -654,6 +654,8 @@ DslScanner::DslScanner( string const & fileName ) throw( Ex, Iconv::Ex ):
   // We need to rewind to that line so readNextLine() would return it again
   // next time it's called. To do that, we just use the slow gzseek() and
   // empty the read buffer.
+  if( gzdirect( f ) )                    // Without this ZLib 1.2.7 gzread() return 0
+    gzrewind( f );                       // after gzseek() call on uncompressed files
   gzseek( f, offset, SEEK_SET );
   readBufferPtr = readBuffer;
   readBufferLeft = 0;