From c76631d445db1307b50fe89642cf494508153bb8 Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Mon, 11 Dec 2017 17:19:49 +0900
Subject: Update `.travis.yml` to use `gcc-6`

The patch is created by @take_cheese in #3872
---
 .travis.yml | 19 ++++++++++++++-----
 1 file changed, 14 insertions(+), 5 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 8d201515c..771e782e8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,18 +1,27 @@
 language: c
 
-sudo: false
-
 matrix:
   include:
     - os: linux
-      sudo: 9000
+      sudo: false
+      dist: trusty
     - os: osx
-      osx_image: xcode7.1
 
 addons:
   apt:
+    sources:
+      - ubuntu-toolchain-r-test
     packages:
       - gperf
+      - gcc-6
+      - g++-6
 
-env: MRUBY_CONFIG=travis_config.rb
+env:
+    MRUBY_CONFIG=travis_config.rb
+before_install:
+  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew update; brew install gcc@6 ; fi
+  - export CC=gcc-6
+  - export CXX=g++-6
+  - export LD=gcc-6
+  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then export LDFLAGS="-fuse-ld=gold" ; fi    
 script: "./minirake all test"
-- 
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