travis: also run the tests built with clang under ASan+UBsan

.travis.yml

@@ -72,6 +72,24 @@ jobs:
           after_script:
               - $CI_MANAGERS/fedora.sh CLEANUP
 
+        - name: Fedora Latest (clang ASan+UBSan)
+          language: bash
+          env:
+              - FEDORA_RELEASE="latest"
+              - CONT_NAME="systemd-fedora-$FEDORA_RELEASE"
+              - DOCKER_EXEC="docker exec -ti $CONT_NAME"
+          before_install:
+              - sudo apt-get -y -o Dpkg::Options::="--force-confnew" install docker-ce
+              - docker --version
+          install:
+              - $CI_MANAGERS/fedora.sh SETUP
+          script:
+              - set -e
+              - $CI_MANAGERS/fedora.sh RUN_CLANG_ASAN
+              - set +e
+          after_script:
+              - $CI_MANAGERS/fedora.sh CLEANUP
+
         - stage: Coverity
           language: bash
           env:

travis-ci/managers/fedora.sh

@@ -57,9 +57,12 @@ for phase in "${PHASES[@]}"; do
             $DOCKER_EXEC ninja -v -C build
             $DOCKER_EXEC ninja -C build test
             ;;
-        RUN_ASAN)
-            $DOCKER_EXEC git clean -dxff
-            $DOCKER_EXEC meson --werror -Dtests=unsafe -Db_sanitize=address,undefined build
+        RUN_ASAN|RUN_CLANG_ASAN)
+            if [[ "$phase" = "RUN_CLANG_ASAN" ]]; then
+                ENV_VARS="-e CC=clang -e CXX=clang++"
+                MESON_ARGS="-Db_lundef=false" # See https://github.com/mesonbuild/meson/issues/764
+            fi
+            docker exec $ENV_VARS -it $CONT_NAME meson --werror -Dtests=unsafe -Db_sanitize=address,undefined $MESON_ARGS build
             $DOCKER_EXEC ninja -v -C build
 
             # Never remove halt_on_error from UBSAN_OPTIONS. See https://github.com/systemd/systemd/commit/2614d83aa06592aedb.