From e60815be290c2334e9122b10ac53b92b23e7f9a3 Mon Sep 17 00:00:00 2001
From: root <root>
Date: Fri, 1 May 2009 00:30:53 +0000
Subject: 3.5

---
 Changes     |  4 ++++
 Makefile.in |  2 +-
 bench.c     | 11 ++++++++---
 lzf_c.c     |  7 ++++---
 4 files changed, 17 insertions(+), 7 deletions(-)

diff --git a/Changes b/Changes
index ac57ed3..09581ff 100644
--- a/Changes
+++ b/Changes
@@ -1,3 +1,7 @@
+3.5  Fri May  1 02:28:42 CEST 2009
+	- lzf_compress did sometimes write one octet past the given output
+          buffer (analyzed and nice testcase by Salvatore Sanfilippo).
+
 3.4  Tue Sep  2 06:45:00 CEST 2008
 	- the fix from 3.3 introduced a compression bug, which is fixed in
           this release (which explains the mysterious prerelease...). Thanks
diff --git a/Makefile.in b/Makefile.in
index 8e747b2..bbd53c0 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -1,4 +1,4 @@
-VERSION = 3.0
+VERSION = 3.5
 
 prefix = @prefix@
 exec_prefix = @exec_prefix@
diff --git a/bench.c b/bench.c
index 5888951..27e0dcc 100644
--- a/bench.c
+++ b/bench.c
@@ -69,18 +69,23 @@ int main(void)
       s=stamp();
 
       //snprintf (buf, 64, "<1.%llx>", (unsigned long long)0xa234567812ULL);
-      //getpgrp();
+      getpgrp();
       //kill (0, SIGURG);
       //write (evfd, &ctr, 8);
       //read (evfd, &ctr, 8);
       //write (p[1], &buf, 1);
       //read (p[0], &buf, 4);
       //stat ("/etc/passwd", &sbuf);
-      free(malloc(8*1024*1024));
+      //struct timeval tv;
+      //gettimeofday (&tv, 0);
+
+      l = lzf_compress (data, DSIZE, data2, DSIZE*2);
+      assert(l);
 
       si[0]=measure(s);
 
-      //j = lzf_decompress (data2, l, data3, DSIZE*2);
+      j = lzf_decompress (data2, l, data3, DSIZE*2);
+      assert (j == DSIZE);
 
       printf ("\r%10d (%d) ", si[0], l);
       if (si[0] < min && si[0] > 0)
diff --git a/lzf_c.c b/lzf_c.c
index 99dab09..0b5d816 100644
--- a/lzf_c.c
+++ b/lzf_c.c
@@ -170,12 +170,13 @@ lzf_compress (const void *const in_data, unsigned int in_len,
           unsigned int maxlen = in_end - ip - len;
           maxlen = maxlen > MAX_REF ? MAX_REF : maxlen;
 
+          if (expect_false (op + 3 + 1 >= out_end)) /* first a faster conservative test */
+            if (op - !lit + 3 + 1 >= out_end) /* second the exact but rare test */
+              return 0;
+
           op [- lit - 1] = lit - 1; /* stop run */
           op -= !lit; /* undo run if length is zero */
 
-          if (expect_false (op + 3 + 1 >= out_end))
-            return 0;
-
           for (;;)
             {
               if (expect_true (maxlen > 16))
-- 
cgit v1.2.3