From: Justin Viiret <justin.viiret@intel.com>
Date: Tue, 10 Nov 2015 05:18:42 +0000 (+1100)
Subject: repeatStoreSparseOptimalP: make diff a u32
X-Git-Tag: v4.1.0^2~21
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cf3ddd9e88e4ca27991f13a6da73f2b9e748057d;p=thirdparty%2Fvectorscan.git

repeatStoreSparseOptimalP: make diff a u32

As delta is a u32, we know diff will always fit within a u32 as well.
Silences a warning from Coverity.
---

diff --git a/src/nfa/repeat.c b/src/nfa/repeat.c
index 92b61874..c1ff5162 100644
--- a/src/nfa/repeat.c
+++ b/src/nfa/repeat.c
@@ -1414,7 +1414,8 @@ void repeatStoreSparseOptimalP(const struct RepeatInfo *info,
         }
     }
 
-    u64a diff = delta - patch * patch_size;
+    assert((u64a)patch * patch_size <= delta);
+    u32 diff = delta - patch * patch_size;
     const u64a *repeatTable = getImplTable(info);
     val += repeatTable[diff];