From: Mark Adler <madler@alumni.caltech.edu>
Date: Fri, 23 Sep 2011 06:55:31 +0000 (-0700)
Subject: Add assertions to fill_window() in deflate.c to match comments.
X-Git-Tag: upstream/1.2.8~245
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1250ac745d9c826f8bed79dc790ae4256b6dbfab;p=platform%2Fupstream%2Fzlib.git

Add assertions to fill_window() in deflate.c to match comments.
---

diff --git a/deflate.c b/deflate.c
index 06ca0ee..b126a71 100644
--- a/deflate.c
+++ b/deflate.c
@@ -1322,6 +1322,8 @@ local void fill_window(s)
     unsigned more;    /* Amount of free space at the end of the window. */
     uInt wsize = s->w_size;
 
+    Assert(s->lookahead < MIN_LOOKAHEAD, "already enough lookahead");
+
     do {
         more = (unsigned)(s->window_size -(ulg)s->lookahead -(ulg)s->strstart);
 
@@ -1439,6 +1441,9 @@ local void fill_window(s)
             s->high_water += init;
         }
     }
+
+    Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD,
+           "not enough room for search");
 }
 
 /* ===========================================================================