1 files changed, 8 insertions, 3 deletions
diff --git a/decoder.cc b/decoder.cc
index b9fc3d8..e15b2ec 100644
--- a/decoder.cc
+++ b/decoder.cc
@@ -108,9 +108,14 @@ void LZ_decoder::flush_data()
   if( size > 0 )
     {
     crc32.update( crc_, buffer + stream_pos, size );
-    if( outfd >= 0 &&
-        writeblock( outfd, buffer + stream_pos, size ) != size )
-      throw Error( "Write error" );
+    if( outfd >= 0 )
+      {
+      const long long i = std::max( 0LL, outskip - stream_position() );
+      const long long s =
+        std::min( outend - stream_position(), (long long)size ) - i;
+      if( s > 0 && writeblock( outfd, buffer + stream_pos + i, s ) != s )
+        throw Error( "Write error" );
+      }
     if( pos >= buffer_size ) { partial_data_pos += pos; pos = 0; }
     stream_pos = pos;
     }