[CI] Updated clang 17 to 18 for c++ tests (#37592)

Closes #37592

PiperOrigin-RevId: 668633593

templates/tools/dockerfile/test/cxx_clang_18_x64/Dockerfile.template

@@ -14,7 +14,7 @@
   # See the License for the specific language governing permissions and
   # limitations under the License.
   
-  FROM silkeh/clang:17-bookworm
+  FROM silkeh/clang:18-bookworm
   
   RUN apt update && apt -y upgrade && apt install -y build-essential curl git time wget zip && apt clean
   <%include file="../../git_avoid_dubious_ownership_error.include"/>

tools/bazelify_tests/dockerimage_current_versions.bzl

@@ -94,7 +94,7 @@ DOCKERIMAGE_CURRENT_VERSIONS = {
     "tools/dockerfile/test/csharp_debian11_arm64.current_version": "docker://us-docker.pkg.dev/grpc-testing/testing-images-public/csharp_debian11_arm64@sha256:4d4bc5f15e03f3d3d8fd889670ecde2c66a2e4d2dd9db80733c05c1d90c8a248",
     "tools/dockerfile/test/csharp_debian11_x64.current_version": "docker://us-docker.pkg.dev/grpc-testing/testing-images-public/csharp_debian11_x64@sha256:0763d919b17b4cfe5b65aff3bf911c04e9e4d46d11649858742033facd9f534f",
     "tools/dockerfile/test/cxx_alpine_x64.current_version": "docker://us-docker.pkg.dev/grpc-testing/testing-images-public/cxx_alpine_x64@sha256:10587bea5d163bf5c34c6157ebd1863d22863d9d38bbaf5135ffc6fbf2b73004",
-    "tools/dockerfile/test/cxx_clang_17_x64.current_version": "docker://us-docker.pkg.dev/grpc-testing/testing-images-public/cxx_clang_17_x64@sha256:f4e88cdfe074ee33abbe01f97f945ded0f144693f1eeac4d541a256a7812a21a",
+    "tools/dockerfile/test/cxx_clang_18_x64.current_version": "docker://us-docker.pkg.dev/grpc-testing/testing-images-public/cxx_clang_18_x64@sha256:46beb9901d0c480a40724a3934677ef5e8d6b2f177517c98e67ccff5d881503f",
     "tools/dockerfile/test/cxx_clang_6_x64.current_version": "docker://us-docker.pkg.dev/grpc-testing/testing-images-public/cxx_clang_6_x64@sha256:eebbaf353522d523ec9a7acb34bb3ae194e22ea7493c85c01437719e30da205d",
     "tools/dockerfile/test/cxx_debian11_openssl102_x64.current_version": "docker://us-docker.pkg.dev/grpc-testing/testing-images-public/cxx_debian11_openssl102_x64@sha256:477ae0da7ff7faa9cf195c0d32472fec4cf8b7325505c63e00b5c794c9a4b1a7",
     "tools/dockerfile/test/cxx_debian11_openssl111_x64.current_version": "docker://us-docker.pkg.dev/grpc-testing/testing-images-public/cxx_debian11_openssl111_x64@sha256:d383e66d4a089f9305768e3037faa2a887ff91565b0f3ddd96985dca94e9754f",

tools/bazelify_tests/test/portability_tests.bzl

@@ -62,7 +62,7 @@ def generate_run_tests_portability_tests(name):
             ["gcc_12_openssl309", "--cmake_configure_extra_args=-DgRPC_SSL_PROVIDER=package", "tools/dockerfile/test/cxx_debian12_openssl309_x64.current_version"],
             ["gcc_musl", "", "tools/dockerfile/test/cxx_alpine_x64.current_version"],
             ["clang_6", "--cmake_configure_extra_args=-DCMAKE_C_COMPILER=clang --cmake_configure_extra_args=-DCMAKE_CXX_COMPILER=clang++", "tools/dockerfile/test/cxx_clang_6_x64.current_version"],
-            ["clang_17_cxx23", "--cmake_configure_extra_args=-DCMAKE_C_COMPILER=clang --cmake_configure_extra_args=-DCMAKE_CXX_COMPILER=clang++ --cmake_configure_extra_args=-DCMAKE_CXX_STANDARD=23", "tools/dockerfile/test/cxx_clang_17_x64.current_version"],
+            ["clang_18_cxx23", "--cmake_configure_extra_args=-DCMAKE_C_COMPILER=clang --cmake_configure_extra_args=-DCMAKE_CXX_COMPILER=clang++ --cmake_configure_extra_args=-DCMAKE_CXX_STANDARD=23", "tools/dockerfile/test/cxx_clang_18_x64.current_version"],
         ]
 
         for compiler_name, args, docker_image_version in compiler_configs:

tools/dockerfile/test/cxx_clang_17_x64.current_version

@@ -1 +0,0 @@
-us-docker.pkg.dev/grpc-testing/testing-images-public/cxx_clang_17_x64:178d7f05c6a124b14824b92cccca2ecc37711e62@sha256:f4e88cdfe074ee33abbe01f97f945ded0f144693f1eeac4d541a256a7812a21a

tools/dockerfile/test/cxx_clang_18_x64.current_version

@@ -0,0 +1 @@
+us-docker.pkg.dev/grpc-testing/testing-images-public/cxx_clang_18_x64:a3f9bea542d5048a4b0d7fdf91e9253705edb4f2@sha256:46beb9901d0c480a40724a3934677ef5e8d6b2f177517c98e67ccff5d881503f

tools/dockerfile/test/cxx_clang_18_x64/Dockerfile

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM silkeh/clang:17-bookworm
+FROM silkeh/clang:18-bookworm
 
 RUN apt update && apt -y upgrade && apt install -y build-essential curl git time wget zip && apt clean
 #=================

tools/run_tests/run_tests.py

@@ -606,8 +606,8 @@ class CLanguage(object):
             return ("alpine", [])
         elif compiler == "clang6":
             return ("clang_6", self._clang_cmake_configure_extra_args())
-        elif compiler == "clang17":
+        elif compiler == "clang18":
-            return ("clang_17", self._clang_cmake_configure_extra_args())
+            return ("clang_18", self._clang_cmake_configure_extra_args())
         else:
             raise Exception("Compiler %s not supported." % compiler)
 
@@ -1673,7 +1673,7 @@ argp.add_argument(
         "gcc12_openssl309",
         "gcc_musl",
         "clang6",
-        "clang17",
+        "clang18",
         # TODO: Automatically populate from supported version
         "python3.7",
         "python3.8",

tools/run_tests/run_tests_matrix.py

@@ -362,7 +362,7 @@ def _create_portability_test_jobs(
         "gcc12_openssl309",
         "gcc_musl",
         "clang6",
-        "clang17",
+        "clang18",
     ]:
         test_jobs += _generate_jobs(
             languages=["c", "c++"],