From: Daniel Arndt <daniel.arndt@iwr.uni-heidelberg.de>
Date: Sat, 17 Nov 2018 11:31:49 +0000 (+0100)
Subject: Avoid integer overflow in Utilities::pack_integers
X-Git-Tag: v9.1.0-rc1~557^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d2f0357ebbe95fa022677f4ae2102f3634509d7c;p=dealii.git

Avoid integer overflow in Utilities::pack_integers
---

diff --git a/source/base/utilities.cc b/source/base/utilities.cc
index 21c1ea0b60..a16d51a2da 100644
--- a/source/base/utilities.cc
+++ b/source/base/utilities.cc
@@ -278,7 +278,7 @@ namespace Utilities
     AssertIndexRange(bits_per_dim * dim, 65);
     Assert(bits_per_dim > 0, ExcMessage("bits_per_dim should be positive"));
 
-    const Integer mask = (1 << bits_per_dim) - 1;
+    const Integer mask = (Integer(1) << bits_per_dim) - 1;
 
     Integer res = 0;
     for (unsigned int i = 0; i < dim; ++i)