From 234bc82308b00d315360073f1316700fa688a38f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Caol=C3=A1n=20McNamara?= <caolanm@redhat.com>
Date: Mon, 20 Feb 2017 08:56:17 +0000
Subject: [PATCH] silence coverity#1202740 Bad bit shift operation

Change-Id: I88c38a1a7eae0d1e2011c40983490efef1ff6438
---
 sal/rtl/alloc_cache.cxx | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sal/rtl/alloc_cache.cxx b/sal/rtl/alloc_cache.cxx
index fd8a8c03205e..1529626e0537 100644
--- a/sal/rtl/alloc_cache.cxx
+++ b/sal/rtl/alloc_cache.cxx
@@ -130,7 +130,9 @@ rtl_cache_hash_rescale (
 
         cache->m_hash_table = new_table;
         cache->m_hash_size  = new_size;
-        cache->m_hash_shift = highbit(cache->m_hash_size) - 1;
+        const auto bit = highbit(cache->m_hash_size);
+        assert(bit > 0);
+        cache->m_hash_shift = bit - 1;
 
         for (i = 0; i < old_size; i++)
         {