X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=unlzw.c;fp=unlzw.c;h=8f8cbeee16fa007762ae842d76e1ad1398c6066b;hb=a2016c1de6e4884f6c8ed5cc498f3bf821c25ca4;hp=5cf95b530f517c5ed256d3eaa71ef424bab30c4b;hpb=c7e61475680fa226bd9b8bdd469cd66914e630f5;p=debian%2Fgzip

diff --git a/unlzw.c b/unlzw.c
index 5cf95b5..8f8cbee 100644
--- a/unlzw.c
+++ b/unlzw.c
@@ -10,12 +10,8 @@
 #include <config.h>
 #include "tailor.h"
 
-#ifdef HAVE_UNISTD_H
-#  include <unistd.h>
-#endif
-#ifdef HAVE_FCNTL_H
-#  include <fcntl.h>
-#endif
+#include <unistd.h>
+#include <fcntl.h>
 
 #include "gzip.h"
 #include "lzw.h"
@@ -244,7 +240,8 @@ int unlzw(in, out)
 	int  o;
 
     resetbuf:
-	e = insize-(o = (posbits>>3));
+	o = posbits >> 3;
+	e = o <= insize ? insize - o : 0;
 
 	for (i = 0 ; i < e ; ++i) {
 	    inbuf[i] = inbuf[i+o];