From: Nathan Moinvaziri <nathan@nathanm.com>
Date: Sat, 4 Jul 2020 03:31:36 +0000 (-0700)
Subject: Fixed possible loss of data warning in LONGEST_MATCH.
X-Git-Tag: 1.9.9-b1~115
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2928d96e2a950f81ade2ff198a11800d2168b983;p=thirdparty%2Fzlib-ng.git

Fixed possible loss of data warning in LONGEST_MATCH.

    match_tpl.h(69,64): warning C4244: '=': conversion from 'unsigned int' to 'Pos', possible loss of data
---

diff --git a/match_tpl.h b/match_tpl.h
index ddfaf408..24bf01de 100644
--- a/match_tpl.h
+++ b/match_tpl.h
@@ -66,7 +66,7 @@ ZLIB_INTERNAL int32_t LONGEST_MATCH(deflate_state *const s, Pos cur_match) {
      * Stop when cur_match becomes <= limit. To simplify the code,
      * we prevent matches with the string of window index 0
      */
-    limit = strstart > MAX_DIST(s) ? strstart - MAX_DIST(s) : 0;
+    limit = strstart > MAX_DIST(s) ? (Pos)(strstart - MAX_DIST(s)) : 0;
 
     scan_start = *(bestcmp_t *)(scan);
     scan_end = *(bestcmp_t *)(scan+best_len-1);