Merging upstream version 1.10.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 4 insertions, 6 deletions

diff --git a/decoder.h b/decoder.h
index e3a4f1c..7ec3133 100644
--- a/decoder.h
+++ b/decoder.h
@@ -1,5 +1,5 @@
 /*  Lunzip - Decompressor for the lzip format
-    Copyright (C) 2010-2017 Antonio Diaz Diaz.
+    Copyright (C) 2010-2018 Antonio Diaz Diaz.
 
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -244,11 +244,7 @@ unsigned seek_read_back( const int fd, uint8_t * const buf, const int size,
                          const int offset );
 
 static inline uint8_t LZd_peek_prev( const struct LZ_decoder * const d )
-  {
-  if( d->pos > 0 ) return d->buffer[d->pos-1];
-  if( d->pos_wrapped ) return d->buffer[d->buffer_size-1];
-  return 0;			/* prev_byte of first byte */
-  }
+  { return d->buffer[((d->pos > 0) ? d->pos : d->buffer_size)-1]; }
 
 static inline uint8_t LZd_peek( const struct LZ_decoder * const d,
                                 const unsigned distance )
@@ -338,6 +334,8 @@ static inline bool LZd_init( struct LZ_decoder * const d,
   d->outfd = ofd;
   d->pos_wrapped = false;
   d->pos_wrapped_dic = false;
+  /* prev_byte of first byte; also for LZd_peek( 0 ) on corrupt file */
+  d->buffer[d->buffer_size-1] = 0;
   return true;
   }