[gnome-settings-daemon/wip/claudio/CI: 2/4] CI: add ASAN, MSAN, TSAN and UBSAN Sanitizers

[Benjamin Berg <bberg src gnome org>]

commit 786a26672701f35f589ae8810f8b4198be65e29e
Author: Claudio André <claudioandre br gmail com>
Date:   Thu Jul 12 17:22:28 2018 -0300

    CI: add ASAN, MSAN, TSAN and UBSAN Sanitizers
    
    AddressSanitizer (or ASan) is a programming tool that detects memory
    corruption bugs such as buffer overflows or use after free. AddressSanitizer
    is based on compiler instrumentation.
    
    MemorySanitizer (MSan) is a detector of uninitialized memory reads in C/C++ programs.
    Uninitialized values occur when stack- or heap-allocated memory is read before
    it is written.
    
    ThreadSanitizer is a tool that detects data races.
    
    UndefinedBehaviorSanitizer (UBSan) is a fast undefined behavior detector. UBSan
    catches various kinds of undefined behavior, for example:
    - Using misaligned or null pointer
    - Signed integer overflow
    - Conversion to, from, or between floating-point types which would overflow the
      destination
    
    The llvm.org states that Sanitizers have found thousands of bugs everywhere.
    Sanitizers running during CI can prevent bugs from taking up residence. They
    are helper tools to maintain bugs out.

 .gitlab-ci.yml | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 867657a9..f2915d86 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -2,6 +2,7 @@ image: claudioandre/daemon:fedora-dev
 stages:
   - build
   - test
+  - manual
 
 .Log files: &log_files  [./*.log, _build/meson-logs/]
 
@@ -80,3 +81,34 @@ test:
         echo "== Testing =="
         meson test -C _build --verbose --no-stdsplit
       fi
+
+# Runs the sanitizers [address, thread, undefined, and memory].
+.sanitizer: &sanitizer
+  <<: *save_build_logs
+  stage: manual
+  when: manual
+  script:
+    - *environment_information
+    - *build_procedure
+    - *run_tests
+
+asan:
+  <<: *sanitizer
+  variables:
+    BUILD_OPTS: "-Db_sanitize=address"
+
+tsan:
+  <<: *sanitizer
+  variables:
+    BUILD_OPTS: "-Db_sanitize=thread"
+
+ubsan:
+  <<: *sanitizer
+  variables:
+    BUILD_OPTS: "-Db_sanitize=undefined"
+
+msan:
+  <<: *sanitizer
+  variables:
+    BUILD_OPTS: "-Db_sanitize=memory"
+    CC: "clang"