gitlab: fold sanitizer jobs into regular ubuntu jobs

The sanitizer jobs run in ubuntu 20.04 containers and thus overlap with
testing already done for the regular ubuntu 20.04 build job. Fold the
sanitizer run for GCC into the regular build job and add a second
ubuntu 20.04 build job for CLang sanitizers.

Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>

.gitlab-ci.yml

@@ -61,7 +61,7 @@ stages:
   before_script:
     - *script_variables
   script:
-    - meson setup build --werror || (cat build/meson-logs/meson-log.txt && exit 1)
+    - meson setup build --werror $MESON_ARGS || (cat build/meson-logs/meson-log.txt && exit 1)
     - meson dist -C build --no-tests
     - if test -x /usr/bin/rpmbuild && test "$RPM" != "skip";
       then
@@ -71,27 +71,6 @@ stages:
         meson test -C build --no-suite syntax-check --print-errorlogs;
       fi
 
-.sanitizer_build_job:
-  stage: builds
-  image: $CI_REGISTRY_IMAGE/ci-ubuntu-2004:latest
-  needs:
-    - x64-ubuntu-2004-container
-  rules:
-    - if: "$TEMPORARILY_DISABLED"
-      allow_failure: true
-    - when: on_success
-  cache:
-    paths:
-      - ccache/
-    key: "$CI_JOB_NAME"
-  before_script:
-    - *script_variables
-  script:
-    - meson build --werror -Ddocs=disabled -Db_lundef=false -Db_sanitize="$SANITIZER"
-    - ninja -C build;
-    - ninja -C build test;
-  variables:
-    UBSAN_OPTIONS: print_stacktrace=1:halt_on_error=1
 
 # Jobs that we delegate to Cirrus CI because they require an operating
 # system other than Linux. These jobs will only run if the required
@@ -418,6 +397,20 @@ x64-ubuntu-2004:
     - x64-ubuntu-2004-container
   variables:
     NAME: ubuntu-2004
+    ASAN_OPTIONS: verify_asan_link_order=0
+    MESON_ARGS: -Db_lundef=false -Db_sanitize=address,undefined
+    UBSAN_OPTIONS: print_stacktrace=1:halt_on_error=1
+
+x64-ubuntu-2004-clang:
+  extends: .native_build_job
+  needs:
+    - x64-ubuntu-2004-container
+  variables:
+    NAME: ubuntu-2004
+    CC: clang
+    MESON_ARGS: -Db_lundef=false -Db_sanitize=address,undefined
+    UBSAN_OPTIONS: print_stacktrace=1:halt_on_error=1
+
 
 x64-freebsd-12-build:
   extends: .cirrus_build_job
@@ -545,22 +538,6 @@ mingw64-fedora-rawhide:
     NAME: fedora-rawhide
     CROSS: mingw64
 
-# Sanitizers
-
-sanitize-gcc:
-  extends: .sanitizer_build_job
-  variables:
-    ASAN_OPTIONS: verify_asan_link_order=0
-    CC: gcc
-    SANITIZER: address,undefined
-
-sanitize-clang:
-  extends: .sanitizer_build_job
-  variables:
-    CC: clang
-    SANITIZER: address,undefined
-
-
 # This artifact published by this job is downloaded by libvirt.org to
 # be deployed to the web root:
 #    https://gitlab.com/libvirt/libvirt/-/jobs/artifacts/master/download?job=website