From 96f446ff653e0af38edb8c3e6d342c045e5bb8b1 Mon Sep 17 00:00:00 2001
From: James Rowe <jroweboy@gmail.com>
Date: Sat, 20 Jan 2018 09:19:02 -0700
Subject: [PATCH] Travis: Add missing PPA for newer libstdc++

---
 .travis.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.travis.yml b/.travis.yml
index 2816a3f57..4f2b17465 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,6 +9,7 @@ matrix:
           sources:
             - sourceline: 'deb http://apt.llvm.org/trusty/ llvm-toolchain-trusty-6.0 main'
               key_url: 'https://apt.llvm.org/llvm-snapshot.gpg.key'
+            - sourceline: 'deb http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu trusty main'
           packages:
             - clang-format-6.0
       script: "./.travis/clang-format/script.sh"