travis: Test on GCC 8

.travis.yml

@@ -4,7 +4,7 @@ cache: ccache
 
 matrix:
   include:
-    - env: NAME="Linux Build"
+    - env: NAME="Linux Build" GCC_VERSION=7
       os: linux
       dist: trusty
       addons:
@@ -17,6 +17,19 @@ matrix:
             - ninja-build
       install: ./.travis/build-x86_64-linux/deps.sh
       script: ./.travis/build-x86_64-linux/build.sh
+    - env: NAME="Linux Build" GCC_VERSION=8
+      os: linux
+      dist: trusty
+      addons:
+        apt:
+          sources:
+            - ubuntu-toolchain-r-test
+          packages:
+            - gcc-8
+            - g++-8
+            - ninja-build
+      install: ./.travis/build-x86_64-linux/deps.sh
+      script: ./.travis/build-x86_64-linux/build.sh
     - env: NAME="Test - Fuzz against Unicorn"
       os: linux
       dist: trusty

.travis/build-x86_64-linux/build.sh

@@ -3,8 +3,8 @@
 set -e
 set -x
 
-export CC=gcc-7
+export CC=gcc-${GCC_VERSION}
-export CXX=g++-7
+export CXX=g++-${GCC_VERSION}
 export PKG_CONFIG_PATH=$HOME/.local/lib/pkgconfig:$PKG_CONFIG_PATH
 
 mkdir build && cd build