add xenial default clang with CHECK enabled

diff --git a/.travis.yml b/.travis.yml
index 9a28e5b7182dcd7b5bdbdd11ebe69af03e6c9578..222aa7fa70167bb66b74c81b9ac65a81649e6507 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -53,8 +53,19 @@ matrix:
             - clang-6.0\r
       env: MATRIX_EVAL="CC=clang-6.0 && CXX=clang++-6.0" \r
 \r
+    # clang-7 is the default on xenial and bionic\r
+    - os: linux\r
+      dist: xenial\r
+      compiler: clang\r
+      addons:\r
+        apt:\r
+          packages:\r
+            - valgrind\r
+            - cppcheck\r
+            - doxygen\r
+      env: CHECK="true"\r
+\r
 # bionic\r
-    # The default clang on bionic is clang 7.0\r
     - os: linux\r
       dist: bionic\r
       compiler: clang\r