*** empty log message ***rel-3_3

1 files changed, 23 insertions, 20 deletions

diff --git a/lzf_c.c b/lzf_c.c
index c1847f3..848aa22 100644
--- a/lzf_c.c
+++ b/lzf_c.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000-2007 Marc Alexander Lehmann <schmorp@schmorp.de>
+ * Copyright (c) 2000-2008 Marc Alexander Lehmann <schmorp@schmorp.de>
  * 
  * Redistribution and use in source and binary forms, with or without modifica-
  * tion, are permitted provided that the following conditions are met:
@@ -208,7 +208,7 @@ lzf_compress (const void *const in_data, unsigned int in_len,
               break;
             }
 
-          len -= 2;
+          len -= 2; /* len is now #octets - 1 */
           ip++;
 
           if (len < 7)
@@ -223,31 +223,34 @@ lzf_compress (const void *const in_data, unsigned int in_len,
 
           *op++ = off;
 
+          if (expect_true (ip + len < in_end - 2))
+            {
 #if ULTRA_FAST || VERY_FAST
-          ip += len;
-#if VERY_FAST && !ULTRA_FAST
-          --ip;
-#endif
-          hval = FRST (ip);
+              ip += len;
+# if VERY_FAST && !ULTRA_FAST
+              --ip;
+# endif
+              hval = FRST (ip);
 
-          hval = NEXT (hval, ip);
-          htab[IDX (hval)] = ip;
-          ip++;
+              hval = NEXT (hval, ip);
+              htab[IDX (hval)] = ip;
+              ip++;
 
-#if VERY_FAST && !ULTRA_FAST
-          hval = NEXT (hval, ip);
-          htab[IDX (hval)] = ip;
-          ip++;
-#endif
-#else
-          do
-            {
+# if VERY_FAST && !ULTRA_FAST
               hval = NEXT (hval, ip);
               htab[IDX (hval)] = ip;
               ip++;
-            }
-          while (len--);
+# endif
+#else
+              do
+                {
+                  hval = NEXT (hval, ip);
+                  htab[IDX (hval)] = ip;
+                  ip++;
+                }
+              while (len--);
 #endif
+            }
 
           lit = 0; op++; /* start run */
         }