Merge branch 'jk/ci-use-clang-for-sanitizer-jobs'

Clang's sanitizer implementation seems to work better than GCC's.

* jk/ci-use-clang-for-sanitizer-jobs:
  ci: drop linux-clang job
  ci: run ASan/UBSan in a single job
  ci: use clang for ASan/UBSan checks

.github/workflows/main.yml

@@ -246,9 +246,6 @@ jobs:
       fail-fast: false
       matrix:
         vector:
-          - jobname: linux-clang
-            cc: clang
-            pool: ubuntu-latest
           - jobname: linux-sha256
             cc: clang
             pool: ubuntu-latest
@@ -273,11 +270,8 @@ jobs:
           - jobname: linux-leaks
             cc: gcc
             pool: ubuntu-latest
-          - jobname: linux-asan
+          - jobname: linux-asan-ubsan
-            cc: gcc
+            cc: clang
-            pool: ubuntu-latest
-          - jobname: linux-ubsan
-            cc: gcc
             pool: ubuntu-latest
     env:
       CC: ${{matrix.vector.cc}}

ci/lib.sh

@@ -278,11 +278,8 @@ linux-leaks)
 	export GIT_TEST_PASSING_SANITIZE_LEAK=true
 	export GIT_TEST_SANITIZE_LEAK_LOG=true
 	;;
-linux-asan)
+linux-asan-ubsan)
-	export SANITIZE=address
+	export SANITIZE=address,undefined
-	;;
-linux-ubsan)
-	export SANITIZE=undefined
 	;;
 esac