From: martynas <martynas@openbsd.org>
Date: Thu, 18 Jun 2015 20:01:47 +0000 (+0000)
Subject: Fix stack shuffle such that sj includes si and the last element actually
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=5b49fdef5fba0304ba7ce13973408b376b62a5c8;p=openbsd

Fix stack shuffle such that sj includes si and the last element actually
gets a chance to be reordered.
---

diff --git a/gnu/gcc/gcc/cfgexpand.c b/gnu/gcc/gcc/cfgexpand.c
index d69855dbeb6..17aff165f6d 100644
--- a/gnu/gcc/gcc/cfgexpand.c
+++ b/gnu/gcc/gcc/cfgexpand.c
@@ -438,7 +438,7 @@ partition_stack_vars (void)
       for (si = n - 1; si > 0; si--)
 	{
 	  size_t tmp;
-	  sj = arc4random_uniform(si);
+	  sj = arc4random_uniform(si + 1);
 
 	  tmp = stack_vars_sorted[si];
 	  stack_vars_sorted[si] = stack_vars_sorted[sj];