From 49889a296e9e15077b36917329538e154789dd9f Mon Sep 17 00:00:00 2001
From: Caolán McNamara <caolanm@redhat.com>
Date: Sun, 22 Jan 2017 21:26:45 +0000
Subject: coverity#1399029 silence Out-of-bounds read

Change-Id: I025e416a6a162316d82cfbde9fbfcb0a45e888d5
---
 sal/rtl/alloc_arena.cxx | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'sal/rtl/alloc_arena.cxx')

diff --git a/sal/rtl/alloc_arena.cxx b/sal/rtl/alloc_arena.cxx
index 19bc4241b3b0..68dd29836ef5 100644
--- a/sal/rtl/alloc_arena.cxx
+++ b/sal/rtl/alloc_arena.cxx
@@ -217,8 +217,9 @@ rtl_arena_freelist_insert (
 )
 {
     rtl_arena_segment_type * head;
-
-    head = &(arena->m_freelist_head[highbit(segment->m_size) - 1]);
+    const auto bit = highbit(segment->m_size);
+    assert(bit > 0);
+    head = &(arena->m_freelist_head[bit - 1]);
     QUEUE_INSERT_TAIL_NAMED(head, segment, f);
 
     arena->m_freelist_bitmap |= head->m_size;
-- 
cgit